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Introduction

SmartStack STS16-20D/STS16-20R Token Ring Switches Installation and User Guide

1. Introduction

This chapter discusses switching technology and how the SmartStack STS16-20D
and/or SmartStack STS16-20R Token Ring Switch can be used to improve network
performance. This chapter also includes a list of features and specifications for the
SmartStack STS16-20D/STS16-20R.

The topics of this chapter are presented under the following titles:

•

“Switching Technology”, starting on page 2.

•

“Front Panel Details”, starting on page 5 and “Back Panel Details” starting on
page 9.

•

“Features and Specifications”, starting on page 10.

The front panels of the SmartStack STS16-20D Token Ring Switch and the
SmartStack STS16-20R Token Ring Switch are exactly the same, only the product
label differs. The following figure illustrates the front panel of a SmartStack
STS16-20D Token Ring Switch.

Figure 1. SmartStack STS16-20D Token Ring Switch

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Summary of Contents for SmartStack STS16-20R

Page 1: ...SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide ...

Page 2: ......

Page 3: ...INDIRECT SPECIAL OR CONSEQUENTIAL DAMAGES WHATSOEVER INCLUDING BUT NOT LIMITED TO LOST PROFITS ARISING OUT OF OR RELATED TO THIS MANUAL OR THE INFORMATION CONTAINED IN IT EVEN IF CABLETRON SYSTEMS HAS BEEN ADVISED OF KNOWN OR SHOULD HAVE KNOWN THE POSSIBILITY OF SUCH DAMAGES October 1999 by Cabletron Systems Inc 35 Industrial Way Rochester NH 03867 All Rights Reserved Order Number 9032956 01 OC 70...

Page 4: ...ch case the user will be required to correct the interference at his own expense WARNING Changes or modifications made to this device which are not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment VCCI Notice This is a Class A product based on the standard of the Voluntary Control Council for Interference by Information Technology ...

Page 5: ...land Conformance to Directive s Product Standards EC Directive 89 336 EEC EC Directive 73 23 EEC EN 55022 EN 50082 1 EN 60950 Equipment Type Environment Networking Equipment for use in a Commercial or Light Industrial Environment We the undersigned hereby declare under our sole responsibility that the equipment packaged with this notice conforms to the above directives Manufacturer Legal Represent...

Page 6: ... and Specifications 10 Features 10 Specifications 13 2 Switch Overview 17 Multiple Simultaneous Conversations 18 Low Latency 19 Address Management 20 Multiple Bridging Modes 21 Source Route Switching SRS 22 Source Route Bridging SRB 22 Source Route Transparent SRT 23 SRT SRB 23 Filtering 24 Congestion Control 24 Three Switching Modes 25 Cut Through 25 Store and Forward 25 Auto Adaptive Cut Through...

Page 7: ...1 Safety Recommendations 41 Safety with Electricity 41 Preventing Electrostatic Discharge Damage 42 Site Requirements 43 Environment 43 Chassis Accessibility 43 Cooling and Airflow 43 Power 43 Configuration Guidelines 45 Frame Length Limit 45 IEEE 802 1D Spanning Tree 46 Ring Numbers 47 Sample Uses of the SmartStack STS16 20RM Family Switches 48 Deployment Scenarios 51 4 Installation 55 Installati...

Page 8: ...nu 79 Switch Configuration Screen 80 Stack Configuration Screen 83 Module Information Screen 84 VLAN Configuration 86 VLAN Configuration Menu 87 VLAN Configuration Screen 88 VLAN Parameter Configuration for CRF Screen 89 VLAN Parameter Configuration for BRF Screen 91 VLAN Port Configuration 93 IP Configuration Screen 94 BootP Requests and Parameters 96 SNMP Configuration Menu 97 Spanning Tree Prot...

Page 9: ...net Sessions 132 Console Configuration Menu 132 Serial Link Configuration Screen 133 Creating a Console Session Using a Modem 134 Stopping the Console Session 134 Telnet Configuration Screen 135 Telnet Sessions Screen 136 Starting the Telnet Session 137 Stopping the Telnet Session 137 Involuntary Termination of the Telnet Session 137 Syslog Daemon Screen 139 DSRR Configuration 141 DSRR Group Confi...

Page 10: ... Statistics Screen for CRF 191 VLAN Statistics for BRF Screen 192 DSRR Status Screens 193 DSRR Status Tables Screen 193 DSRR Neighbor Table Screen 194 DSRR Acting as Backup Table Screen 195 Diagnostic Test Results Screen 196 Message Log Information Screen 197 Display Summary Screen 199 8 Monitoring the Network with SNMP 201 SNMP Setup 201 IP Configuration Screen 201 SNMP Configuration 202 SNMP Con...

Page 11: ...e and Pin Information 229 Connecting to the Out of Band Management Port 229 Out of Band Management Port and Cable Pin Outs 229 Twisted Pair Cable Pin Outs 232 Cabling Recommendations 233 Cable Length and Lobe Wiring Rules for Dedicated Media LAN Segments 234 Cable Length and Lobe Wiring Rules for Shared Media LAN Segments 235 ...

Page 12: ...Backbone 49 Figure 13 Replacing SRBs with a SmartStack STS16 20RM or SmartStack STS16 20R 50 Figure 14 Delivering Dedicated Bandwidth to Individual Workstations 50 Figure 15 Scenario using a Stacker Link and a Matrix Switch 52 Figure 16 Setting Up CrossLinks 53 Figure 17 Exposing the Rack Mounting Bracket 58 Figure 18 Mounting the Switch in a Rack or Cabinet 59 Figure 19 Connecting Devices to Toke...

Page 13: ...s 37 Table 10 SmartStack STS LM Network Connector 66 Table 11 SmartStack STS LM LEDs 66 Table 12 Inter box Parameters 68 Table 13 Console Configuration Settings 71 Table 14 Modem Settings 134 Table 15 Symptom LED State and Recommended Procedure 216 Table 16 Connecting to the Management Port 229 Table 17 Pin out of the Management Port 230 Table 18 Copper Cable Types 233 Table 19 Lobe Length for 150...

Page 14: ...xii Notice ...

Page 15: ... STS16 20D STS16 20R The topics of this chapter are presented under the following titles Switching Technology starting on page 2 Front Panel Details starting on page 5 and Back Panel Details starting on page 9 Features and Specifications starting on page 10 The front panels of the SmartStack STS16 20D Token Ring Switch and the SmartStack STS16 20R Token Ring Switch are exactly the same only the pr...

Page 16: ...ices servers for example can be assigned its own 16 Mbps segment In Token Ring networks the major bottleneck is typically the throughput to high bandwidth devices such as servers and between routers bridges and switches An effective solution is full duplex communication an option for each segment connected to an SmartStack STS16 20D STS16 20R port Normally Token Ring operates in half duplex commun...

Page 17: ... portion of the traffic moves locally between client and server the switch can be very effective Switch of Hubs When network traffic increases beyond the capability of hubs contention results Applications suffer and may even fail The net effect of such a network configuration is that all devices share a single 16 Mbps data path thus reducing overall network efficiency The SmartStack STS16 20D STS1...

Page 18: ...t production networks Although well equipped to provide firewall WAN connectivity security and connection between dissimilar LANs routers are unable to provide high throughput between desktop devices and servers Because of these limitations routers and switches perform complimentary functions in the network The SmartStack STS16 20D STS16 20R can be used as a front end to routers to increase perfor...

Page 19: ...emote through a modem connection The terminal can be used to configure and monitor the switch The Out of Band Management port automatically detects the baud rate of the terminal to which it is attached Token Ring Ports Twenty shielded RJ 45 connectors for Token Ring connection Support for the IBM Cabling System via 150 ohm shielded twisted pair 150 ohm STP or 100 or 120 ohm unshielded twisted pair...

Page 20: ...ability of the switch can be overridden by explicit console management Switched Port Analyzer Any of the Token Ring ports can be configured as an analyzer port An analyzer port is used to monitor any of the other ports in the same physical switch The activity can then be traced by a Token Ring network analyzer attached to the analyzer port Reset Button The SmartStack STS16 20D STS16 20R has a rece...

Page 21: ...on page 5 for the locations of all the LEDs Table 1 lists the status LEDs and their meanings The stack link LEDs and port LEDs are described in the tables on the next page LED State Meaning PWR Off The switch is not connected to a power outlet or the power supply is faulty On The switch is receiving power DIAG On The DIAG diagnostics LED is on during the power on self test During download of a new...

Page 22: ...k RX On or blinking Data is being received from the stack link ATTACH On A connection has been established to the stack Table 2 Stack link LEDs and Their Meanings LED State Meaning INS left LED of port On The Token Ring port is inserted into the ring Off The Token Ring port is not inserted into the ring Blinking The Token Ring port is disabled ACT right LED of port On or blinking Data is being tra...

Page 23: ...ted in Figure 3 The back panel of the SmartStack STS16 20D Figure 4 The back panel of the SmartStack STS16 20R Table 4 lists the back panel connectors on the switch Name Description AC connection Standard AC power connection Redundant power supply SmartStack STS16 20R only Connector for the optional redundant power supply unit Table 4 Back Panel Connectors ...

Page 24: ...ng of operating mode and media speed Multiple Token Ring port operation modes Half duplex concentrator and station Full duplex concentrator and station Dedicated Token Ring RI RO like connection SmartStack STS16 20R only Spanning tree protocol support on SmartStack STS16 20D for the designated network ports 17 20 and on SmartStack STS16 20R for all the ports 1 20 IEEE 802 1D IBM Spanning Tree Prot...

Page 25: ...n on additional management applications for Unix please contact your local Cabletron Systems sales representative Support for RMON and standard MIBs Network statistics LAN probe port mirroring Fault isolation and detection Download via TFTP or X modem of new switch microcode Up and download of switch configuration via TFTP Scalability and High Availability SmartStack STS16 20D One active LAN stati...

Page 26: ...t Power Center equipped with six SmartStack STS PSU Redundant Power Supply Units Installation No special crossover cable required Rack or surface mounting Plug and Play for transparent forwarding Automatic learning of network configuration Transparent to high level protocol Automatic sensing and configuration of ports A factory assigned MAC address the switch can also be configured with a locally ...

Page 27: ...20D 16 workstation ports 1 to 16 4 network workstation ports 17 to 20 SmartStack STS16 20R 20 network workstation ports Number of Token Ring switches in stack 8 using the SmartStack STS 8SU Stacker Unit 5 using the SmartStack STS 5SU Stacker Unit 2 using the SmartStack STS LM Link Module Global lookup table size stations and bridges 10 000 Local lookup table size total for four network ports on Sm...

Page 28: ... 000 pps in each direction measured with a frame size of 19 bytes Maximum aggregate frame rate per 4 ports 200 000 pps in each direction Full media speed for frame sizes above 28 bytes Throughput per port 16 Mbps in each direction for all frame sizes Aggregate switching rate unicast or broadcast for entire switch 1 500 000 pps for smallest frame sizes Within switch latency cut through 35 µs ...

Page 29: ...56 BTU h MTBF SmartStack STS16 20D 72 100 hours SmartStack STS16 20R 70 200 hours Calculated using Bellcore TR 332 issue 6 Operating Temperature Non operating Temperature 10 to 40 C 50 to 104 F 10 to 70 C 13 to 158 F Humidity Operating Non operating 8 to 80 non condensing 90 45 C 113 F Electromagnetic compability immunity EN 50082 1 EN 61000 3 2 EN 61000 3 3 Electromagnetic emissions certification...

Page 30: ...MIBs supported SNMP MIB II RFC1213 SR Bridge MIB RFC1525 Bridge MIB RFC1493 Evolution of the Interfaces Group of MIB II RFC1573 RMON MIB TR extensions selected groups only RFC1757 1513 IEEE 802 5 MIB RFC1749 1748 IEEE 802 5r DTR MIB IEEE 802 5r DTR MAC MIB STS16 20RM MIB VTP MIB Network management SNMP Management Platform Console Telnet sessions SmartStack Manager for Windows 95 and NT Additional ...

Page 31: ...port can attach to a classical Token Ring segment or to a dedicated station on SmartStack STS16 20D ports 1 16 are workstation ports Now users running basic applications are able to share bandwidth and users running bandwidth intensive applications can receive their own dedicated 16 Mbps port Each dedicated port can also be set up in full duplex communication mode so that each 16 Mbps port doubles...

Page 32: ...nts last only for the duration of a byte transmission New connections are made on the fly between different ports on the switch for the next byte Figure 5 Multiple Conversations Through a SmartStack STS16 20RM Switch For example as shown in Figure 5 while host A is transmitting a byte to host B the SmartStack STS16 20D STS16 20R connects only the lines from A to B since there is no need to send pa...

Page 33: ...oken Ring packets simultaneously it boosts overall network throughput Low Latency When operating in cut through mode the SmartStack STS16 20D STS16 20R minimizes latency the time it takes to forward a packet from one Token Ring segment to another by beginning switching immediately after looking at the first six bytes of the destination address in the packet If the packet needs to be switched to an...

Page 34: ...ddresses appear as a source MAC address these additional addresses will not be learned resulting in frames from these additional addresses being sent to all switch ports The workstation ports 1 to 16 maintain one active Token Ring address per port If more than one address appears as a source MAC address these additional addresses will not be learned and frames from these additional addresses will ...

Page 35: ...tch bridging modes are founded on the concept of logical rings LR or logical segments in Ethernet The logical ring is represented on the switch by the DTR IEEE 802 5r standard s concentrator relay function CRF A logical ring may consist of interconnected CRFs on different switches Each port on the switch belongs to a CRF which is a logical grouping of ports within the switch A CRF can consist of a...

Page 36: ...idge function with the ability to forward frames based on source route information to locally attached source route bridges The switch does not otherwise act as a source route bridge For non source routed packets the switch decision is based upon destination MAC Addresses For source routed packets it is based on the source route information combined with the destination MAC address The switch lear...

Page 37: ... a special mode combining SRT and the SRB switching modes Each logical ring will operate either in SRT mode or in SRB mode Transparent bridging will only take place between logical rings in SRT mode Source route bridging will take place between all logical rings The purpose of the SRT SRB mode is to allow duplicate MAC addresses to be used when in SRT mode The ports on which the duplicate MAC addr...

Page 38: ...ss filters act in one of three ways Block destination address at a specific port this prevents the specified port from sending frames to a specified destination Allow destination address at specific ports this indicates that the specified port must send frames to the specified destinations only Force destination address to a specific port this allows forwarding to a unicast address that has not be...

Page 39: ...rate at 16 Mbps Store and Forward In this mode the switch receives the total packet from the input port checks it for any errors and then starts forwarding the packet to the destination port This technique will ensure that no faulty packets are transmitted by output port The negative impact however is higher latency typically in the range of 40 2 000 µs depending on the packet size Though slower t...

Page 40: ...s is also known as Token Passing TKP station mode Full duplex concentrator port Connects to a single station or to another switch in full duplex mode This is also known as Transmit Immediate TXI port mode Full duplex station emulation Connects to another Token Ring switch This is also known as Transmit Immediate TXI station mode RI RO like connection Allows connection of the RI RO port from a MAU ...

Page 41: ... a MAU CAU main ring system Connecting the other end of the RI RO connection to the other switch port creates redundant paths because the two switch ports are connected to the same segment Therefore the IEEE Spanning Tree Protocol STP must be enabled which will place one port in forward and the other in blocked mode If there is a break in the main ring the STP will place both ports in forward mode...

Page 42: ...oken Ring ClearServer for LAN allow multiple adapters to be treated as one virtual adapter in the server thus allowing multiple connections between a server and the backbone switch or switches During normal operation the traffic is distributed on the links The SmartStack STS16 20RM switch familysupport ClearServer for LAN to be used on servers connected to the switch CrossLinks Any Token Ring link...

Page 43: ...namically redistributes the traffic to the remaining links The CrossLink remains in operation as long as there is at least one link in operation If a failed link is restored traffic is once more redistributed to make use of the restored link A CrossLink is in many ways operating as one single link For example the spanning tree protocol will only have one port entity covering all ports in the Cross...

Page 44: ... IBM originally implemented a form of the Institute of Electrical and Electronics Engineers IEEE spanning tree algorithm This algorithm commonly referred to as the IBM spanning tree limits the STE frames to one copy per destination ring Some SRB implementations have also implemented the IEEE Spanning Tree Protocol to be compatible with source route transparent bridges The IEEE Spanning Tree Protoc...

Page 45: ...ed between ports belonging to different VLANs Port groups on different VLANs may be assigned the same ring number but ring numbers must be unique within the same VLAN For each VLAN the stack can be assigned a separate IP address The spanning tree protocol is executed independently within each VLAN However since all BRFs use the same Bridge ID for the spanning tree algorithm the spanning tree proto...

Page 46: ...Token Ring and an emulated Token Ring or another legacy ring as illustrated in Figure 8 Figure 8 Example of Dynamic Source Route Recovery Base Configuration This configuration already has redundant paths between the two rings but since moving traffic from one path to the other involves changing source route this would involve session loss When DSRR is enabled an extra path is automatically created...

Page 47: ...e 9 or its link to any of the Token Rings fail one of the remaining active switch es will after a short interval activate its backup path to take over the traffic of the failed switch see Figure 10 When the failing switch has been repaired replaced the traffic will automatically revert to it Backup BRF Inactive Backup BRF Inactive BRF Bridge No B1 BRF Bridge No B2 A T M A T M A T M A T M ...

Page 48: ...s is required to handle simultaneous failure of n switches While the above example shows redundancy for a BRF with two CRFs it is also possible to provide partial redundancy for a BRF with more than two CRFs This must however be accomplished by creating separate DSRR instances for selected CRF pairs Note that since at least one of the CRFs must be connected to a legacy Token Ring it is not possibl...

Page 49: ...ent is supported via IP and MAC The following MIBs are supported Most user configurable variables will be supported in either the standard MIBs or the proprietary MIB Configuration settings such as port attributes and operational information such as address tables are fully accessible through SNMP Certain other settings such as passwords and console settings cannot be viewed or modified via SNMP f...

Page 50: ... out of band via the TIA EIA 232 F that is RS 232 port labeled MANAGEMENT or in band via Telnet IBM LAN Network Manager The SmartStack STS16 20D STS16 20R does not support management by the IBM LAN Network Manager but it will allow LAN Network Manager LLC frames to flow through the switch so that communication to existing LNM manageable hubs and source route bridges will be maintained The switch a...

Page 51: ...itor a particular statistic internally and when the statistics reaches a threshold the SmartStack STS16 20D STS16 20R will send a trap to the client This monitoring method reduces traffic between the SNMP client and the SmartStack STS16 20D STS16 20R The switch implements a mini RMON probe for the physical ports by supporting some of the RMON groups RFC 1757 and RFC 1513 For full RMON an external ...

Page 52: ...Ring Ring Station Group Only supported as read That is only the entries created as default can be read The ring station table is not supported The Token Ring Ring Station Order Group The Ring Station Config Table Not supported The Token Ring Ring Station Config Group The Token Ring Source Routing Group Name Support Info Table 9 Supported RMON Groups ...

Page 53: ... sections describe how to stack the STS16 20x switches Back to Back Two STS16 20x units can be connected together by fitting each switch with the SmartStack STS LM Link Module and connecting the switches together using and appropriate stacker link cable This simple connection doubles the number of ports available Internal Stacker The STS 5SU Internal Stacker Unit can be inserted into the stacker p...

Page 54: ...Figure 22 in Chapter 4 Installation It is compatible with the SmartStack STS RPC Redundant Power Center which can supply back up power for up to six switches when up to six SmartStack STS PSU Redundant Power Supply Unit are installed in the chassis This gives a high degree of resilience to power supply failures The SmartStack STS16 20R will switch to the external power supply if the internal suppl...

Page 55: ...roperly wired and earthed receptacle Any equipment to which the switch will be attached must also be connected to properly wired and earthed receptacles Warning Before working on equipment that is connected to power lines remove jewelry including rings necklaces bracelets and watches Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object ...

Page 56: ... assess the condition of the victim and then call for help Determine if the person needs rescue breathing or external cardiac compressions then take appropriate action Preventing Electrostatic Discharge Damage Electrostatic discharge ESD can damage equipment and impair electrical circuitry It occurs when electronic components are improperly handled and can result in complete or intermittent failur...

Page 57: ...eated air out through holes in the right side If the internal temperature exceeds 50 C 112 F a temperature error is reported to the console Caution To protect the equipment from overheating do not operate it in an area that exceeds the maximum recommended ambient temperature of 40 C 104 F To prevent airflow restriction you must allow at least 7 6 cm 3 of clearance around chassis openings for prope...

Page 58: ...ropping it on the floor or any equipment beneath it in the rack The SmartStack STS16 20D Token Ring Switch and the SmartStack STS16 20R Token Ring Switch unit each weighs approximately 7 2 kg 15 9 lbs Caution To separate the switch from the power pull the power cord completely out from the socket The power socket must be easily accessible and located near the unit Warning All RJ 45 connectors must...

Page 59: ...92 bytes from the Frame Control FC to the Frame Check Sequence FCS characters This corresponds to a Maximum Transfer Unit MTU of 17 800 bytes The default maximum physical frame length of the switch is 4 546 bytes which corresponds to an MTU of 4 472 bytes The actual MTU size of a VLAN is configured in the VLAN Parameter Configuration for BRF screen see page 91 The switch truncates frames larger th...

Page 60: ... establish session activity during this time resulting in error messages indicating a connection failure These applications should be configured to wait at least thirty seconds after the LAN link has become active before attempting to establish session activity Modifying the 802 1D spanning tree default parameters can reduce this delay If STP is enabled on a dedicated port FDX and a station is att...

Page 61: ...Guide Ring Numbers Forwarding frames between CRFs in SRB mode is only possible if the CRFs know their ring numbers If you are running the switch in an environment without other bridges switches auto configuration of ring numbers is not possible In this case you have to configure the ring numbers manually ...

Page 62: ...lex 16 Mbps bandwidth to individual workstations utilizing SmartStack STS16 20D STS16 20R switches Figures 11 12 13 and 14 illustrate the migration steps Figure 11 shows a typical 3 layer network design built with source routing bridges Figure 12 shows how the backbone is optimized using SmartStack STS16 20RM or SmartStack STS16 20R Figure 13 shows the deployment of SmartStack STS16 20RM or SmartS...

Page 63: ... STS16 20R Token Ring Switches Installation and User Guide Figure 11 Typical Network without the SmartStack STS16 20D STS16 20R Figure 12 Relieving the Overstressed Backbone 1 SRB 2 SRB 3 SRB 7 SRB 8 SRB 9 SRB 4 6 SRB SRB 5 Server Server Server Server ...

Page 64: ...uide Preparing for Installation Figure 13 Replacing SRBs with a SmartStack STS16 20RM or SmartStack STS16 20R Figure 14 Delivering Dedicated Bandwidth to Individual Workstations 1 2 CRF 2 3 CRF 3 7 CRF 7 8 CRF 8 9 CRF 9 Server Switch CRF 5 Server Server Server 32 Mbps CRF 1 BRF ...

Page 65: ...of the SmartStack STS16 20RM STS16 20FRM with respect to defining switched rings CRFs and bridges BRFs Figure 15 shows a scenario using a stacker links and a switch stacker unit Several ports on SmartStack STS16 20RM are combined with ports on the SmartStack STS16 20D STS16 20R to create a switched ring Ports on SmartStack STS16 20D STS16 20R are intended for users who need the dedicated bandwidth...

Page 66: ...s times the number of ports in the pipe in bandwidth For a description of CrossLinks see the section CrossLink on page 110 As a general rule of thumb you should combine SmartStack STS16 20D STS16 20R with SmartStack STS16 20RM because SmartStack STS16 20RM gives the ultimate flexibility via its expansion module capability Another good network design rule of thumb is to reduce the number of rings i...

Page 67: ...53 Preparing for Installation SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Figure 16 Setting Up CrossLinks ...

Page 68: ...54 SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Preparing for Installation ...

Page 69: ...quence is listed in the following steps 1 Plan for installation Read Chapter 3 Preparing for Installation 2 Unpack the switch 3 Gather the materials 4 Mount the switch 5 Connect the switch to the network 6 Verify the operation of the switch Note Complete the following step only if you will be customizing the configuration of the switch or monitoring its activity 7 Configure the switch Note For inf...

Page 70: ...ck Manager for Windows as well as user documentation in PDF format One printed SmartStack Manager for Windows Installation and User Guide One printed SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User guide One serial cable for the management port One plastic bag containing four adhesive rubber feet and rack mounting screws an Allen key nuts and washers Report any missing par...

Page 71: ... installed in a rack you need A rack inventory chart and a cabling chart from your network administrator The supplied set of screws nuts and washers along with the Allen key tool A properly earthed power cord If the unit will be installed on a surface such as a tabletop you will need A cabling chart from your network administrator The four supplied adhesive rubber feet A properly earthed power cor...

Page 72: ...ous chapter Chapter 3 Preparing for Installation Caution The following rack mounting instructions need to be observed to ensure that the SmartStack STS16 20D STS16 20R and any other equipment are mechanically stable The following steps describe how to mount the SmartStack STS16 20D STS16 20R in a rack or cabinet 1 Remove the bracket covers on each side of the SmartStack STS16 20D STS16 20R to expo...

Page 73: ...to provide the extra mounting hardware Figure 18 Mounting the Switch in a Rack or Cabinet Table Mounting The SmartStack STS16 20D STS16 20R operates at a low noise level which makes it suitable for a large enough flat surface such as a table Four self adhesive pads are supplied with the switch The pads must be mounted in the four recesses on the bottom of the switch When the pads are mounted simpl...

Page 74: ...nce matching balun at each end See Appendix B Cable and Pin Information for specific information on supported cable types cable lengths and connector pinouts Connecting Devices to the Token Ring Ports If you will not be using building wiring in the wall cables to connect the device to the SmartStack STS16 20D STS16 20R perform the following steps If you will be using building wiring follow the ste...

Page 75: ...Devices to the Token Ring Ports Using Building Wiring If you will use building wiring in the wall cables to connect the device to the switch perform the following steps 1 Using the Switch Cabling Chart provided by your administrator as a guide connect the cables between the devices and the faceplates as illustrated in Figure 20 2 Label the faceplate so that it will be easier to find the device if ...

Page 76: ...switch is rack mounted dress the switch end of the cables through a cable management bracket if one is present on your rack 7 To continue installing the switch continue with Applying Power Figure 20 Connecting using Building Wiring Checking the Installation Before you apply power to the SmartStack STS16 20D STS16 20R inspect the installation thoroughly Verify that all cables are installed correctl...

Page 77: ...switch before connecting or disconnecting the DC power cable Warning Unplug the power cord before you work on a system that does not have an on off switch Warning When installing the unit the ground connection must always be made first and disconnected last Warning This equipment is intended to be grounded Ensure that the host is connected to earth ground during normal use Use the following steps ...

Page 78: ...is on for the duration of the test turning off when the self test is complete 6 At the completion of the diagnostics the front panel LEDs should be illuminated according to the status of the unit s configuration See the following sections for a description of the controls and LEDs for the SmartStack STS16 20D STS16 20R Note If the SmartStack STS16 20D STS16 20R fails to power up correctly or if it...

Page 79: ... hot swappable Always be sure that the power is off before installing or removing a module If the power is on damage to the equipment may result Once the module is installed in the SmartStack STS16 20D STS16 20R external cables may be connected or removed without having to remove power from the switch 1 Disconnect power to the SmartStack STS16 20D STS16 20R switch 2 If a blank cover is over the st...

Page 80: ...6 20RM family Switches via one SmartStack STS 5SU Stack Link Module and up to four SmartStack STS LM Modules Up to eight SmartStack STS16 20RM family Switches via one SmartStack STS 8SU Stacker Unit and up to eight SmartStack STS LM Modules When inserting the cable connector keep the connector straight to minimize the risk of bent or damaged pins Note Stacked SmartStack STS16 20RM family switches ...

Page 81: ...SU units the box number is determined by the port number The switches in the stack combine certain configuration parameters so that the stack as a unit uses one set of parameters These parameters are discussed below in Inter box Parameters The stack can now be managed as a single entity from a management console or management application Inter box Parameters The SmartStack STS16 20D STS16 20R swit...

Page 82: ...nector pins You may need a bright light to see inside the stacker slot to check for bent pins Also verify that the module is set firmly in place Menu Parameter IP Configuration IP Address IP Gateway IP Subnet IP State Spanning Tree Protocol STP Enabling Disabling STP Switch Priority STP Maximum Aging STP Hello Time STP Forward Delay Virtual LAN Name Configuration Changing VLAN names Password Syste...

Page 83: ... Manager for Windows Other Simple Network Management Protocol SNMP based applications Overview This chapter only describes how to access the switch console via the MANAGEMENT port Refer to the section Console Telnet Sessions on page 132 for information on configuring serial console and or telnet console sessions Network management applications in band management are beyond the scope of this guide ...

Page 84: ...Terminal Equipment device 2 Connect the other end of the cable to a PC or another DTE device OR 1 Attach a null modem adapter to the MANAGEMENT port 2 Attach a straight through modem cable to the null modem adapter Connecting to the MANAGEMENT Port Using a Modem 1 Connect one end of a straight through TIA EIA 232 modem cable to the MANAGEMENT port This is a male DB 9 connector configured as a DTE ...

Page 85: ...Baud Rate 2400 4800 9600 19200 38400 57600 Parity None Data bits 8 Stop bits 1 Handshaking None Terminal emulation VT100 Duplex Full Software flow control XON XOFF Off input and output Hardware flow control RTS CTS Off Autobaud upon break On Line wrap On Screen scroll On CR translation CR Backspace BS translation Destructive Break length milliseconds 350 Enquiry ENQ Off EGA VGA true underline Off ...

Page 86: ...20R Four of these keys are RETURN the combination keys ALT B the BREAK key and ESC After the DIAG LED turns off try one of the command keys at the console and press it repeatedly If there is no response wait several seconds and again press it repeatedly If necessary perform the same routine using the other command keys If this does not work and there is garbled output on the screen try pushing the...

Page 87: ...oot process Boot Firmware Phase II v2 3 Program memory test Passed Relocating main image to DRAM Done Main image integrity check succeeded Control transferred to main process Starting Power On Self Test Diagnostics Network memory test 32 bits Passed Network memory test 16 bits Passed Network memory test 8 bits Passed Port register and memory test Passed Single port loopback test Passed All ports l...

Page 88: ... cause At the end of the boot messages you should be prompted to press RETURN ENTER The following greeting screen of the switch console manager should appear At the top level screen press ENTER RETURN to enter the main menu The contents of the main menu the submenus and screens are described in subsequent chapters The information in these chapters includes configuring monitoring and viewing statis...

Page 89: ...information on how to connect the console see Chapter 5 Accessing Switch Management Subjects covered in this chapter General guidelines page 76 Main menu screen page 78 Configuration menu page 79 Switch and stack configuration page 80 Module information page 84 Virtual LANs page 86 IP configuration page 94 Spanning tree protocol STP page 97 Port configuration page 106 CrossLink channels page 110 A...

Page 90: ...To return to the greeting screen press CTRL B To refresh the console screen press CTRL L If you are administering switches in a stack many of the console screens will prompt for a box number Enter the number of the box you want to administer The VLAN term in connection with CRF is discussed on page 31 The terms Virtual LAN and domain are interchangeable The console automatically returns to the gre...

Page 91: ... on the greeting screen see Chapter 5 Accessing Switch Management Navigating within the Menus Use the arrow keys cursor keys to highlight an item on the screen or menu Items that end with three dots opens another screen or menu Pressing the ENTER key on such an item will display the new screen or menu If the item on the screen is a command such as Reset pressing the ENTER key will execute the comm...

Page 92: ...ation submenus is given on page 79 Statistics Displays the Statistics menu for the SmartStack STS16 20D STS16 20R Explanations of screens in the Statistics menu are in Chapter 7 Monitoring the Network from the Console Statistics Menu on page 155 Download Upload Displays the Download Upload menu that is explained in this chapter starting from page 147 Reset Displays the Reset menu that is explained...

Page 93: ...oken Ring Switches Installation and User Guide Configuration Menu Open this menu by selecting Configuration in the main menu From the Configuration menu you can view and set the switch configuration parameters This chapter describes all submenus and screens ...

Page 94: ...ght the field and press the ENTER key A prompt appears near the bottom of the screen for entering text for that field Pressing ENTER again enters that text The following explains the fields in the Switch Configuration screen System Description Name and model of the switch or in the case of a stack the generic stack name In addition to this the firmware release is displayed Information in this fiel...

Page 95: ... is necessary when changing the base MAC address The greeting screen on the console will always show the current active Switch base Address The SmartStack STS16 20D STS16 20R reserves 31 addresses for ports The Token Ring ports on a SmartStack STS16 20D STS16 20R switch will be assigned MAC addresses using the following scheme BASE Module port 1 20 Will be assigned Switch Base Address port number ...

Page 96: ...dress is assigned when the VLAN becomes preferred that is it has an assigned port in the actual switch or stack of switches by selecting the lowest available MAC address above Stack Master Base Address 32 If management SNMP or TELNET contact with the switch is lost because for example ports are moved from one BRF to another it is suggested that a terminal is connected to the OBM port of the switch...

Page 97: ...ur or minute Note If you cannot set the Time of Day the lithium battery may need replacing If this is the case contact your local reseller Stack Configuration Screen To open this screen from the main menu select Configuration Switch Configuration Stack Configuration The following information is displayed on this screen Number of Boxes Number of switches currently participating in the stack Display...

Page 98: ...Stacker is operational SmartStack STS LM or SmartStack STS 5SU Information in this field cannot be changed Stack Connection Whether the SmartStack STS 8SU Stacker Unit is connected Information in this field cannot be changed Module Information Screen To open this screen from the main menu select Configuration Module Information If expansion modules have been installed in the switch this menu provi...

Page 99: ...product number Board ID Decimal identifier of the module HW Rev Hardware revision level If 4K is displayed after the number this module will prevent the switch or stack of switches from operating with an MTU size above 4 472 bytes If HW Rev is set to NA the module does not support reading of the hardware revision FW Rev Firmware revision level Ports Number of ports on the module Up Time Amount of ...

Page 100: ...VLANs If you have already supplied configuration information using the main configuration menus that information applies to VLAN default Virtual LANs affects other SmartStack STS16 20D STS16 20R features in the following ways Spanning tree protocol STP If you are using STP in a certain domain you must supply STP information for that domain The STP software treats ports on other domains as nonexist...

Page 101: ...y even though it applies to ports in other domains CrossLink All ports in a single CrossLink must belong to the same CRF Therefore the console software prevents you from defining a CrossLink connection that includes ports in different CRFs It also prevents you from assigning the ports in an existing CrossLink to different CRFs On SmartStack STS16 20D only ports 17 to 20 allow CrossLink configurati...

Page 102: ... is synonymous with the ELAN name on ATM LANE ports ID Numeric ID assigned to the BRF or CRF This must be within the range of 2 to 1005 Brdg Rng Bridge Ring numbers For BRFs this is a bridge number for CRF this is a ring number Ports This parameter is set to Yes if ports are assigned to the CRF The value is No if no ports are assigned Note that if no ports are assigned to a BRF it will not be assi...

Page 103: ... BRF or CRF You cannot delete a BRF if there are CRFs assigned to it or a CRF if there are ports assigned to it VLAN Parameter Configuration for CRF Screen To open this screen do the following 1 From the main menu select Configuration VLAN Configuration VLAN Configuration 2 Select View Add or Change 3 When prompted enter the VLAN ID for the CRF Use this screen to add or change a CRF Note that the ...

Page 104: ...has been learned the learned ring number will be prefixed with A Note A ring number is learned from Source Route Explorer frames ARE and STE and from the MAC protocol Forwarding of frames between CRFs in SRB mode is only possible if the CRFs know their ring numbers If you are running the switch in an environment without other bridges switches learning of ring numbers is not possible Hence manual c...

Page 105: ... active Secondary2 for a second backup connection to the logical Ethernet segment This connection is always blocking if Primary or Secondary1 are active Each CRF of the translational links connected to the same logical Ethernet segment must have a different connection attribute VLAN Parameter Configuration for BRF Screen To open this screen do the following 1 From the main menu select Configuratio...

Page 106: ...so depends on the hardware and the value configured for the port the smaller value is used These values correspond to maximum frame size values of 1 548 4 546 default 9 236 and 18 192 respectively The actual value used depends on the hardware and the value configured for the ports the smaller value is used Bridge Number Source routing bridge number for this BRF Possible hexadecimal values are 0 th...

Page 107: ...Configuration VLAN Port Configuration This screen is used to view and edit current port assignments to CRFs Port The port number Type Port type Possible values are TR For Token Ring ports HSTR For High Speed Token Ring ports ATM For ATM ports TS For translational switching ports CRF CRF to which the port is currently assigned BRF Parent BRF of the CRF to which the port is currently assigned ...

Page 108: ...ed to a CRF that is a sibling of the selected BRF before IP assignment Interface MAC Address Displays the MAC address assigned to this BRF IP Address Used to configure the IP address of the switch in the selected VLAN BRF To change it highlight the field and press ENTER Default 192 0 2 1 Default Gateway Used to configure the default gateway When sending IP packets from this VLAN to other IP networ...

Page 109: ...regular intervals on all ports in the VLAN until the VLAN is assigned an IP address different from 0 0 0 0 or 192 0 2 1 The assignment can come from NVRAM during a boot from the console management or via BootP BootP Always In this state the switch will at boot time clear the IP address assigned to this VLAN and send out BootP requests at regular intervals until it receives a BootP answer Then norm...

Page 110: ...e necessary again Besides the switch s IP address several other parameters in a BootP response are also recognized and recorded in NVRAM when received in the same response Default Gateway see the note on this page Subnet Mask TFTP Main Code File Name TFTP Server Address only recognized if the Bootfile name is present One other parameter the TFTP VLAN is inferred whenever a TFTP Bootfile name is pr...

Page 111: ...nning Tree Protocols will only block for spanning tree explorer frames and will work on the BRF level in the switch The IEEE spanning tree can operate on two levels BRF and CRF It is possible to have a spanning tree entity running on the bridge entity and a spanning tree entity running in every CRF at the same time Logically there is an internal port between the BRF and the CRFs All BRFs in the sw...

Page 112: ...blish session activity during this time resulting in error messages indicating a connection failure These applications should be configured to wait at least 30 seconds after the LAN link is active before attempting to establish session activity This delay can be reduced by modifying the 802 1D Spanning Tree Protocol default parameters If STP is enabled on a dedicated port and a station is attached...

Page 113: ...protocol to be used Possible values are No IEEE IBM and Base on Bridging Mode The default is No If STP Participation is set to No the internal links between this bridge entity and the concentrator entities having this BRF as a parent will be set to forwarding mode You can then override this by blocking the link at a particular CRF If STP Participation is set to IEEE the bridge relay function will ...

Page 114: ...tional Address 80 01 43 00 00 00 actually a group address No Sets the IEEE Spanning Tree to use the standard IEEE STP Address C0 00 00 00 01 00 default Note Nodes in the same spanning tree must use the same address Bridge Priority Enter a priority value for this spanning tree entity The bridge with the lowest priority value in an STP domain becomes the root Note All BRFs in a switch use the same M...

Page 115: ...rt Spanning Tree Parameters If you select the CRF Port Spanning Tree Parameters item you will be presented with a screen listing the CRFs that have the current BRF as parent From this screen you can select a CRF and modify the CRF and or port parameters as desired Spanning Tree for CRF Screen To open this screen from the main menu do the following 1 Select Configuration Spanning Tree A list contai...

Page 116: ...mine the least expensive path to the root STP Participation CRF to Ports Whether the ports in this CRF participates in the spanning tree protocol and if so the protocol to be used Possible values are No IEEE and Cisco The default is No The recommended protocol is IEEE but if the CRF contains more than one port and the port s are connected to SRT bridges running the IEEE Spanning Tree Protocol usin...

Page 117: ...ded The default is 20 The minimum value is the higher of 6 or Switch Hello Time x 2 1 The maximum cannot be more than the lower of 40 or Switch Forward Delay x 2 1 The range limits that appear when you select this parameter are calculated using the values currently selected for Switch Hello Time and Switch Forward Delay Switch Forward Delay in Seconds The time the SmartStack STS16 20D STS16 20R wa...

Page 118: ... have the currently selected BRF as parent When you select a CRF from this list the Spanning Tree for CRF screen is displayed 4 On the Spanning Tree for CRF screen select Port Spanning Tree Parameters Use the Port Spanning Tree Parameters screen to set up STP priorities for each port Port The number of the port Priority Priority associated with the port The port with the lowest priority value has ...

Page 119: ...ode The port s spanning tree mode Possible values are forwarding blocked and auto When auto is selected the spanning tree protocol will be used to determine the forwarding blocking state When set to blocked the port will not forward any frames When set to forwarding the port will always forward frames On SmartStack STS16 20D ports 1 to 16 will always be in forwarding state If the port is used to c...

Page 120: ... base switch ports the screen will look as in the following example screen For the interface module ports refer to the interface module guide Note When auto is selected for fields that support the auto option the current operational field value shown will be prefixed with A Name This field is for assigning a name to the Token Ring port The name can be 0 31 characters long BRF This field is for inf...

Page 121: ...ing period in minutes The number of configuration losses occurring within this interval is compared to the Cfg Loss Threshold to determine if a port should be disabled Possible values are 1 60 minutes The default value is 1 Priority Threshold The highest Token Ring frame priority that will go to the low priority transmit queue Possible values are 0 7 The default value is 3 Min Transmit Priority Th...

Page 122: ...mode will depend on the number of errors that occur on this port during the sampling interval If the error rate is below the error low threshold cut through mode is used If the error rate is above the Error High Threshold value store forward is used The store forward mode is always used for ports with a media speed of 4 Mbps Error High Threshold This field is only valid when Forwarding Mode is set...

Page 123: ...ault media speed configuration from Auto to either 16 or 4 Mbps Max Explorer Rate on Input The maximum Explorer frame forwarding rate per second Possible values are Disabled default or 0 5000 Duplex Mode The port operation mode Possible values are as follows Auto A HDX A FDX the port determines the full duplex or half duplex mode automatically HDX half duplex mode FDX full duplex mode Operation Mo...

Page 124: ...inks on SmartStack STS16 20D the maximum is 4 ports A CrossLink provides bandwidth of from 32 to 128 Mbps in half duplex mode or from 64 to 256 Mbps in full duplex mode Note On SmartStack STS16 20D only ports 17 to 20 allow CrossLinks to be configured Figure 26 Setting Up CrossLinks The CrossLink feature affects other SmartStack STS16 20D STS16 20R features in the following ways Half duplex and fu...

Page 125: ...ntry in the master table and the port table for the CrossLink The system module assigns the primary port in the CrossLink as the location of the address For additional source addresses the system module assigns locations alternately to other ports in the CrossLink When all ports in the CrossLink have at least one address assigned the system module starts assigning from the primary port again New d...

Page 126: ...Token Ring Switches Installation and User Guide Switch Configuration CrossLink Menu To open this menu from the main menu select Configuration CrossLink Use the CrossLink menu to access the CrossLink Configuration and Information screens ...

Page 127: ...nk List of different CrossLink setups Ports The ports within that specific CrossLink Add Entry Prompts you for port numbers for a CrossLink Enter at least 2 8 ports no more than four ports on SmartStack STS16 20D Start with the lowest number and go to the highest separating the numbers by spaces All ports must belong to the same CRF Delete Entry Asks whether you want to remove the entry then delet...

Page 128: ...ir linked ports Do not connect the cables before configuring the switches if you do you may create loops Cable only the ports you have added to the CrossLink menu If you connect additional ports between two switches a loop results 1 Disconnect the ports you want to add to the CrossLink or disable them using the Port Configuration menu 2 For each switch select the CrossLink Configuration menu then ...

Page 129: ... open this screen from the main menu select Configuration CrossLink Current CrossLink Information Use this screen to display the status of the CrossLink CrossLink The number of the CrossLink referring to the information displayed on the present screen State Whether the specified CrossLink is active or not Ports What ports are in that CrossLink ...

Page 130: ... Security menu to create port filters Filters are port specific and applied to a switch s incoming traffic only Up to 250 filters can be created for each switch the filters must be applied to specific ports at a specified switch A filter is a combination of a MAC address and the type of filter it is For example if the MAC address 0000A3 C00021 is configured as source type at a port and also config...

Page 131: ...as the following filtering menus are presented Filters and Port Security Menu To open this screen from the main menu select Configuration Filters Port Security Use this menu to access the filtering menus Configure Filters Displays the Configure Filters screen where you can establish specific filtering based on MAC addresses Configure Port Security Mode Displays the Configure Port Security mode scr...

Page 132: ...is selected a list is displayed of the available filter functions with a selectable highlight After a choice is made the console prompts you for the necessary parameters Index The number index MAC Address MAC address contained in packets to be filtered See a detailed description of MAC addresses on page 81 Type Possible types Block any packet with source address Block Src That is any packet from t...

Page 133: ...Dest If a packet is sent to a specified address it is allowed to enter the switch through the specified port s This feature is used in conjunction with port security Force a packet with the destination address to certain port Force Dest Packets with a specified address must go to the specified port Note Force a packet is for test in network or troubleshooting only Must not be combined with Port Se...

Page 134: ...nd from a specific port you can block all source addresses by secure source at that port and then use port filtering as explained in the previous sections to selectively allow specific addresses to send from that port There are four address security choices Normal No security mode is defined for a port This is the default Secure source addresses Block all source addresses except those allowed by a...

Page 135: ...Token Ring port number that is 1 20 The following screen displays an example of a port using the MAC address filters and port security Index Numerical order of entries MAC Address The specific MAC address the filter is applied to See a detailed description of MAC Addresses on page 81 Description List of descriptions of security modes as assigned at Configure Port Security Mode menu This address is...

Page 136: ...ata based on protocol you can define protocol classes and then assign filtering attributes to these classes on a per port basis The classes in protocol filtering are based on destination service access point DSAP information In protocol filtering each incoming frame is assigned to one of the protocol classes based on the DSAP or Ethertype of the frame If the DSAP is 0xAA which indicates the Subnet...

Page 137: ...cols Filters screen select Protocol Class Assignment The Protocol Class Assignment screen shows the 15 protocol classes that may be defined by the user Note that Class 0 is the default class and will contain all DSAPs and Ethertypes not assigned to any other class You modify a class by highlighting the class and pressing Enter You will then be prompted for the field to modify Name Ethertype or DSA...

Page 138: ...s Screen To open this screen do the following 1 From the main menu select Configuration Filters Port Security Then select Protocol Filters 2 On the Protocols Filters screen select Port Filtering Attributes Before the Port Filtering Attributes screen appears you will be prompted for a port to modify Class For the selected port use the Class column to select a class to modify Block The Block column ...

Page 139: ...lowing values Yes Allow transparent bridging for frames in this protocol class default value No Disallow transparent bridging for frames in this protocol class If No is selected only source routed frames can be bridged between CRFs for this protocol class Ethertype Information column showing the Ethertype defined for this class DSAPs Informational column showing the DSAPs currently in this class ...

Page 140: ...the master address table after the system aging time Set at the Master Address Table Aging menu There are two levels to set for the port and master aging tables Time Interval Aging is a time limit in minutes which will drop older addresses after the selected time Automatic On Demand Aging stores addresses until reaching maximum capacity of the table then deletes addresses in the following specific...

Page 141: ...Address Aging Menu To open this menu from the main menu select Configuration Address Aging The screens opened from this menu are described in the following sections Port Address Table Aging Screen To open this menu from the main menu select Configuration Address Aging Then select Port Address Table Aging ...

Page 142: ...minutes The maximum time for this value is 9999 minutes 0 indicates that address aging is disabled Demand Aging Level Sets a percentage threshold of address table capacity to ensure that the port s address table is populated only by the most frequently used addresses Addresses are stored until reaching the maximum capacity of the table then discarded in a specific order until the set percentage of...

Page 143: ...emoved regardless of whether they have been seen within that time period This situation is not very likely but the function is a security against remaining unused addresses in the memory for an indefinite time To open this menu from the main menu select Configuration Address Aging Then select Master Address Table Aging The Master Address Table Aging screen contains two main items Aging Time Master...

Page 144: ...ord If you establish a password users must enter it to access the console menus If there is no password just press ENTER at the password prompt Set Read Write Password Establishes or changes the password for Read Write access Delete Read Write Password Deletes the password for Read Write access Set Read Only Password Establishes or changes the Read Only password Delete Read Only Password Deletes t...

Page 145: ...saved across warm boots and power cycles Note If you have forgotten the password you can delete it by depressing the unlabeled system request button on the front panel of the switch for one second releasing it then selecting Point 4 Clear the system password This will clear both the Read Only and the Read Write password ...

Page 146: ...ssing ENTER To open this menu from the main menu select Configuration Console Configuration Serial Link Configuration See page 133 for an example of this screen and an explanation of its contents Telnet Configuration See page 135 for an example of this screen and an explanation of its contents Console Timeout A value that can be set to determine when the console session will timeout and return to ...

Page 147: ...RTS CTS handshaking Default Disabled Software Flow Control Enables the XON and XOFF characters which are 11 and 13 hexadecimal respectively Default Disabled Autobaud Upon Break Indicates whether the baud rate is reset when a Break key sequence pressing ENTER rapidly for five seconds is sent or received The default is Disabled When set to Enabled a baud rate change can be accomplished by changing t...

Page 148: ...s important that your modem be configured correctly The settings shown in italics are particularly important If your modem is not configured correctly the connection may cause the SmartStack STS16 20D STS16 20R to reset Start the console by pressing ENTER If a Telnet session is active press ENTER at the console to terminate the Telnet session and press ENTER again to start the console session Stop...

Page 149: ...s ENTER and enter the number Default is 5 Disallow New Telnet Session Choose Yes or No to allow or disallow a new Telnet session Press ENTER at this selection use arrow keys to highlight Yes or No and then press ENTER again Terminate All Active Telnet Sessions If you highlight this selection and press ENTER all Telnet sessions are terminated Telnet Sessions This item opens the Telnet Sessions scre...

Page 150: ...e Telnet Configuration screen select Telnet Sessions Index Numerical order of entries Box The box number ID of the SmartStack STS16 20D STS16 20R in a stack Remote Lists the IP address and the port number of the Remote Telnet session Local Lists the IP address and the port number of the Local Telnet session Status The status of the telnet session Possible values are Open the connection is active C...

Page 151: ...een completed In some menus changes take effect immediately as in adding filters and in other menus such as STP the changes are not saved until the menu is exited Stopping the Telnet Session Telnet sessions can be terminated by pressing CTRL B or any other means available through the user s Telnet application Involuntary Termination of the Telnet Session The following can terminate a Telnet sessio...

Page 152: ...If you are in a Telnet session and change the IP parameters either in the IP Information Session screen or Virtual LAN IP Configuration screen and save the changes using the Exit command from the screen you will lose the connection to your Telnet session even if the IP parameters you change are in another VLAN ...

Page 153: ...e switch Warnings and Info messages A syslog facility code can be assigned to each of them On this screen you can configure up to 20 receivers More Displays more information Add Entry Adds a new entry to the list To add an entry select Add Entry and type in the Receiver s IP address A menu of available VLANs are then displayed Select the VLAN to be used for transport note that more than one VLAN c...

Page 154: ...140 SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Switch Configuration Change Entry Modifies an existing entry Zoom Displays more information ...

Page 155: ...or an overview on DSRR see Dynamic Source Route Recovery on page 32 in Chapter 2 Switch Overview Note Making the LANE Clients that correspond to the backup Virtual ATM Ports VAPs join the same Emulated LAN ELAN as those that correspond to the active VAPs may depend on properly configuring a possible LAN Emulation Client Server LECS and or the SSIM A2 01 SSIM A8 01 ATM 155 SmartStack Interface Modu...

Page 156: ...orts of a DSRR group with the same Group ID on another switch The CRFs containing the primary and traced ports of a DSRR group must not contain other ports A backup BRF can only forward traffic for one failed BRF at a time If a BRF for which a DSRR group is created has more than two CRFs the primary and the traced ports must be in the same box Figure 27 Primary and Traced DSRR Port Backup BRF Inac...

Page 157: ...each group on this screen is as follows IX Index for selecting a group to be viewed changed or deleted Box Port Primary DSRR port This column displays the port that is connected to the legacy Token Ring on which DSRR protocol frames will be transmitted See Figure 27 on page 142 Group This is a global group identification Active DSRR groups on different switches with the same Group ID and with prim...

Page 158: ...cked Port and Group The DSRR Configuration screen will appear DSRR Configuration Screen To open this screen from the main menu do the following 1 Select Configuration DSRR Group Configuration Select Change or View to edit or see an existing group Select Add to create a new group You will be prompted for information to identify the group The DSRR Configuration screen will then appear The items on t...

Page 159: ...ill be declared failed Possible values are 100 600 000 milliseconds the default is 1 700 Traced Port Identification of the virtual ATM port connected to the emulated or other legacy Token Ring When you select this item you will be prompted for a box stack only and port number If the value s entered identifies an ATM Trunk Port a list of CRFs configured on this port are displayed Select one See Fig...

Page 160: ...ide Switch Configuration ATM Address This is the ATM address that identifies the Lan Emulation Client implementing the Virtual ATM Traced Port when applicable You cannot change the value of this parameter Return Saves the changes made on the screen and returns to the previous menu ...

Page 161: ... attached terminal The image is included on the diskette in a file called STS_230 bt The boot code is upgraded from the TFTP or the System Request menu 3 Main code During startup it will display System Software Version 4 0 0 Copyright 1994 1999 on an attached terminal The image is include on the diskette as Cabletron version Note Some of the switches in the SmartStack STS16 20RM family currently s...

Page 162: ...ll be deleted It is recommended that you save the configuration before upgrading the software To open the Download Upload menu select Download Upload in the main menu Serial Link Download Screen Open this screen from the main menu by selecting Download Upload Serial Link Download This screen is for downloading via the Out of Band management port ...

Page 163: ...ted to reset the switch Press Y to confirm the reset The procedure is now complete If the download was interrupted or the image was invalid the SmartStack STS16 20D STS16 20R will discover this during startup and a new serial download must be performed prior to normal operation If it is necessary to upgrade the boot code press the unlabeled system request button above the reset button on the front...

Page 164: ...rver Address The address of the host serving as the TFTP server Download VLAN The VLAN name through which the download is attempted Main Image Download Configuration Files Download Configuration Files Upload Select the required function and input the path and filename of the file the SmartStack STS16 20D STS16 20R attempts to download or upload as it is to be received and interpreted by the TFTP s...

Page 165: ...new image The switch will continue to use its previously loaded software until its next reset by whatever means The newly stored image is not functional until a reset is performed When downloading configuration all configurable parameters will be replaced with this new configuration the message log will be cleared and the switch must be reset immediately after While uploading configuration files t...

Page 166: ...highlight over the item and pressing ENTER Reset Switch With Diagnostics A reset function is initiated with this command It resets the switch hardware runs diagnostic tests clears all counters including address tables and restarts the SmartStack STS16 20D STS16 20R When the SmartStack STS16 20D STS16 20R reboots administrative parameters from nonvolatile memory are used to initialize the operation...

Page 167: ...are using the CrossLink feature be sure to disconnect the affected ports or disable them on the Port Configuration screen and reset the switch before clearing NVRAM If you are using the STP option be aware that port costs and priorities will be lost which may result in loops Use the menus to reestablish port costs and priorities then reset the switch to make the new parameters take effect If you a...

Page 168: ...154 SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Switch Configuration ...

Page 169: ...esult of input data from the configuration menus see Chapter 6 Switch Configuration The specifications presented on the Statistic screens normally can not be modified Information within the statistics menus are updated screens are refreshed every five seconds For information on how to use the console interface see General Guidelines on page 76 and Navigating within the Menus on page 77 in Chapter ...

Page 170: ...tatistics Menu Statistics Menu To open the Statistics menu select Statistics in the main menu For information on how to use the console interface see General Guidelines on page 76 and Navigating within the Menus on page 77 in Chapter 6 Switch Configuration The following pages contains information on the submenus and screens ...

Page 171: ...that are handled by the CPU within the switch for example SNMP requests The Port Statistics screen described in a later section refers to frames handled by the ports on the switch System Up Time Time passed since the last reset or power cycle Board Temperature Indicates whether the switch is operating at normal or unacceptably high over 50 C 122 F temperatures The actual board temperature is also ...

Page 172: ... Stations Number of entries in the address table representing the number of currently active stations MAC addresses or nodes on all ports of the SmartStack STS16 20D STS16 20R Largest Number of Stations The most stations MAC addresses ever active on all ports at one time since the last reset or power cycle Maximum Address Table Chain Largest number of MAC addresses that have hashed to the same loc...

Page 173: ... STS16 20D STS16 20R Token Ring Switches Installation and User Guide Power Supply Information Screen To open this screen from the main menu select Statistics Power Supply Information This screen displays information about any installed internal or external power supplies ...

Page 174: ...tatus screen provides a summary of the status of all Token Ring ports Port The port number CRF The name of the CRF to which the port is assigned BRF The name of the BRF to which the port is assigned Enabled Displays the current enabled status of the port Possible values are Yes and No Ins Indicates if the port is currently inserted into the ring Possible values are Yes and No Spd The Token Ring me...

Page 175: ...onnection to a station is supported The Tx Rx pinouts are the same as a concentrator s FDX station Full duplex mode in which only a dedicated connection to a port is possible The Tx Rx pinouts are the same as an adapter s RI Ring In Only for SmartStack 16 20R ports 19 and 20 RO Ring Out Only for SmartStack 16 20R ports 19 and 20 RI RO Ring in ring out mode Only for SmartStack 16 20R ports 19 and 2...

Page 176: ...atistics Menu Port Statistics Menu To open this screen from the main menu select Statistics Port Status The Port Statistics menu provides access to statistical information for any particular port To enter the menu you must first enter a port number The screens you can access from this menu are described on the following pages ...

Page 177: ...screen to view detailed information about a particular port Frames Forwarded Number of frames forwarded by the port excluding those delivered to the host CPU system software for processing or to a monitoring port NSR Frames Forwarded Number of non source routed frames forwarded by the port SRF Frames Forwarded Number of source routed frames forwarded by the port STE Frames Forwarded Number of Span...

Page 178: ... frames received on this port Broadcast Frames Received Number of broadcast frames received on this port without errors Multicast Frames Received Number of multicast frames received on this port without errors Frames Filtered Addr Number of frames filtered by the MAC address filters Frames Filtered DSAP Number of frames filtered by the protocol filters Local Address Entries Number of local station...

Page 179: ...er Overflows Total number of frames which could not be transmitted from this port because of transmit buffer overflow Long Frames Total number of frames received on this port which exceeded the maximum frame length Short Frames Total number of frames received on this port which were less that 18 bytes Duplicate Ring Number Indicates the number of times a frame which contains a duplicate ring numbe...

Page 180: ... that the switch performs a ring number test when the topology of the network changes At that time the port might be disabled Config Loss Number of configuration loss events after the port has completed the join process and then lost communication Config Loss Reason Latest Config Loss error code Possible values are None Wire Fault Wire fault Lobe Test Lobe test failure HDX in FDX HDX MAC frame rec...

Page 181: ...y a station the E bit is zero in the frame or token and one of the following conditions exists 1 There is a non data bit J or K bit between the SD and the ED of the frame or token OR 2 There is an FCS error in the frame Burst Errors This counter is incremented when a station detects the absence of transitions for five half bit timers burst five error AC Errors Number of times a station received an...

Page 182: ...e the TRR timer goes off Receive Congestion This counter is incremented when a station recognizes a frame addressed to its specific address but has no available buffer space indicating that the station is congested Frame Copied Errors This counter is incremented when a station recognizes a frame addressed to its specific address and detects that the FS field A bits are set to 1 indicating a possib...

Page 183: ...number of times the port has detected an open or short circuit in the lobe data path The adapter will be closed and Ring State will signify this condition Removes The number of times the port has received a Remove Ring Station MAC frame request When this frame is received the port will enter the closed state Singles The number of times the port has sensed that it is the only station on the ring Th...

Page 184: ... field has the general format 0x text string where is a hexadecimal error code value and textstring can be No Status OK or a short text string indicating an error Before an open is completed the field has the value 0x20000 No Status If no problems are detected this field will display 0x00000 OK Error conditions are indicated by 0x and a text string identifying the error The text see below may also...

Page 185: ...ext open Possible values are Unknown 4 Mbps 16 Mbps Unknown can indicate that the port will attempt to auto insert into the ring Upstream Neighbor The MAC address of the upstream neighbor station in the ring Active Monitor Participate If this field has a value of Enabled then this port will participate in the active monitor selection process If the value is Disabled then it will not Functional Add...

Page 186: ...o open this screen do the following 1 Starting from the main menu select Statistics Port Statistics 2 Enter a port number 3 Select 802 5 DTR MAC Information The 802 5 DTR MAC Information menu provides access to the appropriate DTR information screen TXI Information Displays the TXI Information screen Station CPort Information Displays the Station CPort Information screen ...

Page 187: ...ld displays the value set by the Authorized Function Classes subvector X 06 of the Change Parameters MAC frame Valid range is from 0x0000 to 0xFFFF Each bit that is enabled 1 corresponds to a function class that is enabled Error Report Timer Time out value of the ring station s soft error report timer This field displays the value of the timer TSER as set by the Error Timer Value subvector X 05 fr...

Page 188: ...d Beacon UNA This field displays the value of the UNA subvector X 02 used in the last Beacon MAC frame transmitted or received It will indicate the individual MAC address of the sending ring station s nearest active upstream neighbor NAUN The value could be a valid individual MAC address or Unknown Beacon Physical Drop Number Physical location of the sending ring station This field displays the va...

Page 189: ...cess Protocol Request subvector X 0E transmitted in the Registration Request MAC frame Possible values are TXI and TKP Station Access Protocol Response Response to protocol request This field displays the value of the Access Protocol Response subvector X 0F received from the Registration Response MAC frame Possible values are Access Denied and FDX Wire Fault Station Individual Address Count This f...

Page 190: ... Wire Fault support CPort Phantom Drive Mask This field displays the value of the C Port policy variable PPV PD_MASK It represents the Phantom Drive and Wire Fault detection methods supported by the C Port Possible values are RI RO and Not RI RO Common Access Protocol Mask This field displays which access protocols can be supported by the PMAC It displays the value of the PPV AP_MASK Possible valu...

Page 191: ...S16 20R Token Ring Switches Installation and User Guide Address Tables Menu To open this menu from the main menu select Statistics Address Tables Use this menu to select which address table statistics you want to view The following pages describes the screens you access from this menu ...

Page 192: ...of all the ports known to the SmartStack STS16 20D STS16 20R The table can contain up to 10 000 entries memory See a detailed description of MAC addresses on page 81 Address MAC address of a node Type The Type column of the Master Address Table screen can contain the following types Switch Base Address The burned in or configured MAC Address of the switch box Present on all ports VLAN Name The MAC...

Page 193: ...number port number The address is known at a port of another switch in the stack If the address has occurred as a destination address in incoming frames at other ports it will be present in these ports too Unknown The address is a unicast address and has occurred as a destination address in incoming frames at one or more ports The switch has however not yet learned the location of the address beca...

Page 194: ...this address are highlighted More Refreshes a one page table or displays subsequent entries on a larger table Search Prompts you to enter the MAC address of a node and the ports whose address tables you want to search then displays the entry on the first line Master Route Descriptor Table Screen To open this menu from the main menu select Statistics Address Tables Master Route Descriptor Table Thi...

Page 195: ...descriptor is known at the specified Token Ring port ATM The route is known at the specified ATM port HSTR The route is known at the specified High Speed Token Ring port The route descriptor will be present at port nn Port The route descriptor is known at a box or port If the route descriptor has occurred as next hop in the RIF of incoming frames at other ports it will be present in these ports to...

Page 196: ...istics Menu VLAN Address Table Screen To open this menu do the following 1 From the main menu select Statistics Address Tables 2 Select VLAN Address Table 3 Select a CRF when prompted The VLAN Address Table screen appears For a description of the fields and their meanings see the section Master Address Table Screen on page 178 ...

Page 197: ...Route Descriptor Table Screen To open this menu do the following 1 From the main menu select Statistics Address Tables 2 Select VLAN Route Descriptor Table 3 Select a CRF when prompted The VLAN Route Descriptor Table appears For a description of the fields and their meaning see the section Master Route Descriptor Table Screen on page 180 above ...

Page 198: ...locate the box and port that have seen it as a source address Use this screen to locate a computer in the network MAC Address The MAC address of the a computer on the network Type in the address you want to locate Box The stack number of the switch on which the MAC address is recognized The value can be 1 8 Port The number of the switch port on which the MAC address is recognized The value can be ...

Page 199: ...turned off that is you have selected No for the Participate in Spanning Tree prompt at the Configuration menus this menu will only display the headers with no information below them When the SmartStack STS16 20D STS16 20R is configured with CrossLink channels STP packets use the primary port of the CrossLink Note On SmartStack STS16 20D only ports 17 to 20 can support the spanning tree protocol Br...

Page 200: ... VLAN ID of a CRF belonging to this BRF PId Port ID that is used to determine the role of the port in the spanning tree The port ID is expressed in the form port priority port number When using the IEEE Spanning Tree priority is configured from the Spanning Tree Configuration screen and port number is the bridge number an internal number for the CRF When using the IBM Spanning Tree the port ID is ...

Page 201: ...rt has determined it must communicate with the root of the spanning tree A BRF will use the base MAC address 0x20 for the ID The first defined CRF will use the base MAC address 0x21 for the ID etc Dsg PId Designated Port Id Port on the designated bridge through which this SmartStack STS16 20D STS16 20R will communicate with the root of the spanning tree This information is useful if the SmartStack...

Page 202: ...CRF Spanning Tree Select a CRF when prompted This screen displays the spanning tree parameters for a CRF that belongs to the currently selected BRF The following information is displayed on this screen Bridge ID Priority and MAC address of this bridge Root ID Priority and MAC address of the root bridge Root Port Number of the port on this switch that is closest to the root This switch communicates...

Page 203: ...g This time is advertised by the root and used by all devices and switches in the active topology of the spanning tree network Port Port number PId Port ID Port ID that is used to determine the role of the port in the spanning tree The port ID is expressed in the form port priority port number PCst Port Cost Cost associated with each port Lower numbers are generally assigned to ports attached to f...

Page 204: ...he root of the spanning tree This information is useful if the switch is the designated bridge on one or more network segments Chgs Number of topology changes that is the number of times the port has entered the forwarding state plus the number of times the port has made the transition from forwarding to blocking The counter is reset when the switch is reset or the spanning tree is turned on Last ...

Page 205: ...ill be displayed VLAN Statistics Screen for CRF To open the VLAN Statistics screen for CRF do the following 1 From the main menu select Statistics VLAN Statistics 2 You will be prompted for a VLAN type Select CRF 3 Select a CRF The VLAN Statistics screen for CRF appears Parent VLAN The parent BRF Currently Active Stations Number of MAC addresses currently in the master address table that are recog...

Page 206: ...tatistics 2 You will be prompted for a VLAN type Select BRF 3 The VLAN Statistics Screen for BRF appears Currently Active Stations Number of MAC addresses currently in the master address table that are recognized as ports belonging to this VLAN Largest Number of Stations Largest number of MAC addresses in the master address table since the last reset or power cycle that are recognized as belonging...

Page 207: ...ed status screens by selecting by selecting Statistics DSRR Status This section contains information on the specific screens DSRR Status Tables Screen Open this menu from the main menu by selecting Statistics DSRR Status Select View Neighbor or View Backup to view status tables for a group You will be prompted for the Index Ix value of the DSRR group The table screen will then appear ...

Page 208: ... the screen will appear This screen contains a one page entry for each switch currently participating in the Redundancy Group including the one on the console of which the values are displayed Neighbor Last Seen Displays the time in milliseconds since a Hello Message was last received from the corresponding switch for the DSRR group in question For the local switch this value is always displayed a...

Page 209: ...ompted for the Index Ix value of the group then the screen will appear This screen contains an entry for each switch for which the local switch is presently acting as active backup The items on the screen are described Time Acting as Backup Displays the time in milliseconds since the local switch started forwarding frames on behalf of the switch represented by the entry More Displays the next entr...

Page 210: ...whether errors or a specific diagnostic test has failed at a specified box switch The data that is shown on this screen is for monitoring information only and is meant for network personnel experienced with this type of information The explanation of this information is extensive and outside the scope of this guide However the instructions on how to access this information is provided so that the ...

Page 211: ...g complex problems The message log will be preserved through resets but will be cleared after a configuration download The messages in the log can also be send to a syslog receiver see page 139 in Chapter 6 Switch Configuration Whenever there are unread messages in the Message log a will be shown in the upper right corner of the console Log Index number identifying the log file Type Message type P...

Page 212: ... 20D STS16 20R Token Ring Switches Installation and User Guide Monitoring the Network from the Console Statistics Menu Back Shows the previous screen if any Start End Move to the first or last page Clear Clear all messages ...

Page 213: ...rs in a summary form The information is suitable for saving to an ASCII file by means of a capture function in the terminal emulation program used This file will often be requested by the Cabletron Systems technical support personnel in case of troubleshooting SPACE Pressing the SPACE key you will start a screen report of all entered parameters which runs through the display until you stop it or t...

Page 214: ...200 SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Monitoring the Network from the Console Statistics Menu ...

Page 215: ... Switch Management 2 Make the necessary configurations in the IP Configuration screen 3 Make the necessary configurations in the SNMP Configuration menu and the following subscreens Community String screen Trap Receiver screen The following sections describe the SNMP setup menus IP Configuration Screen The IP Configuration screen sets the IP address gateway address subnet mask and IP state The IP ...

Page 216: ...uration SNMP Configuration Send Authentication Traps Indicates whether SNMP should issue an authentication trap to trap receivers whenever an unauthorized request is detected that is a read or write attempt with the wrong community name Default Yes Enable RMON Statistics Enables the gathering of a subset of the RMON statistics from the RMON MIBs The default setting is No The following groups are s...

Page 217: ...SNMP managers Up to five different communities of 1 16 characters each can be stored in the switch Entries in the table are saved across resets and power cycles Trap Receivers Displays table of managers to which traps are sent Entries in the table are saved across resets and power cycles Community Strings Screen To open this screen from the main menu select Configuration SNMP Configuration Communi...

Page 218: ...al number of entries in the table Community Name Name or password used to identify the SNMP managers Note Community names are case sensitive Mode The privilege level assigned to this name Read specifies that SNMP managers can only view SNMP information Read Write specifies that SNMP managers can both view and change SNMP information Add Entry Adds community string Delete Entry Deletes community st...

Page 219: ... where to send traps The table contains the IP address associated with an SNMP trap manager The Trap receiver table contains a maximum of 20 entries It is redisplayed each time the table changes Trap receiver table entries are saved when you select Return Index Sequential number of entries in the table IP Address The IP address associated with an SNMP trap receiver Community Name The community nam...

Page 220: ... The warmStart Trap A warmStart trap signifies that the sending protocol entity is reinitializing itself such that neither the agent configuration nor the protocol entity implementation is altered The linkDown Trap A linkDown trap signifies that the sending protocol entity recognizes a failure in one of the communication links represented in the agent s configuration The Trap PDU of type linkDown ...

Page 221: ...ackTempChange This trap is generated when the temperature in a switch exceeds normal or returns to normal STS16PowerSupply This trap is generated when the status of the power supply units changes Per Port Traps STS16PortStrNFwdEntry This trap is generated when a port automatically enters store and forward mode when the error rate exceeds the threshold STS16PortCfgLossTrap This trap occurs when a p...

Page 222: ...ridge when any of its configured ports transitions from the Learning state to the Forwarding state or from the Forwarding state to the Blocking state The trap is not sent if a newRoot trap is sent for the same transition STS16TrBRFNewRoot This trap is a BRF specific version of the newRoot trap as described in RFC1493 The newRoot trap indicates that the sending agent has become the new root of the ...

Page 223: ...en Ring Switches Installation and User Guide This trap is sent when one of the links in an CrossLink fail The variable STS16CLPorts contains the ports which are operational in the CrossLink Note On SmartStack STS16 20D only ports 17 to 20 allow CrossLinks to be configured ...

Page 224: ...210 SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Monitoring the Network with SNMP ...

Page 225: ...VLAN The monitored port can be any type of port Token Ring ATM HSTR and Fast Ethernet Note The analyzer port works as a normal port This means it can be in FDX HDX mode Station Port 4 or 16 Mpbs Moreover you can use any external probe The frames will be buffered normally that is if you try to monitor a FDX 16 MB line with a 4 MB HDX port data loss can occur When the monitored port is in HDX mode t...

Page 226: ...ed port is in FDX mode only half the traffic will be received on the analyzer port Note A special probe is needed for using the passive monitoring feature Since MAC frames are copied from the monitored port and since the analyzer port does not itself run the MAC protocol the probe must be able to attach to the switch without trying to insert by means of the MAC protocol ...

Page 227: ...network analyzer or probe will be attached Note This port should be assigned to its own CRF For information about assigning ports to a CRF see VLAN Configuration on page 86 Monitored Port Number The port that will be monitored To change a setting select it and specify the new value To disable the Switched Port Analyzer port select Port to Monitor and set it to 0 To save the changes select Return N...

Page 228: ...214 SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Monitoring Port Traffic ...

Page 229: ...The Switched Port Analyzer feature allows a network analyzer to be attached to a port on the switch to monitor in real time switch activity of another port See Chapter 9 Monitoring Port Traffic for information on configuring Switched Port Analyzer Start of Troubleshooting Process If one or more devices such as PCs connected to a switch are unable to communicate with other devices in the network us...

Page 230: ...tlet is working 2 If the power cord is connected correctly the outlet is working and the problem persists the problem is in the switch In that case contact technical support Procedure B Use this procedure if the ERR LED is on 1 Verify that the boot code is at least release 2 3 If not download the boot code using either TFTP or serial download as described in Chapter 6 Switch Configuration Symptom ...

Page 231: ...tic screen Try to correct any individual port problems that are detected If the problem is corrected resume using the switch 5 If the problem does not go away the problem is in the switch Procedure C Use this procedure if all devices connected to the switch are having communication problems the ERR LED is off and the PWR LED is on 1 Reset the switch by disconnecting power cord for 10 seconds If th...

Page 232: ...switch If the port is not disabled disconnect the port cable Try moving the cable to another port until service can be arranged If the switch can be temporarily removed from service connect a console and reset the switch with diagnostics to see whether the port passes diagnostics and initializes If it does not the problem is in the switch call service 4 Restart communications program on the failed...

Page 233: ... having a communication problem connect its segment to another token ring port on the switch Try each of the remaining ports to determine whether the problem will go away If the problem goes away the problem might be in the switch Contact your dealer If the problem persists continue with step 7 7 The problem does not appear to be in the switch and the cables and devices connected to the switch The...

Page 234: ...220 SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Troubleshooting ...

Page 235: ...ial and revision numbers of all involved Cabletron Systems products in the network A description of your network environment layout cable type etc Network load and frame size at the time of trouble if known The device history i e have you returned the device before is this a recurring problem etc Any previous Return Material Authorization RMA numbers World Wide Web http www cabletron com Phone 603...

Page 236: ...roblem Report Form from Cabletron Systems s web site on the Internet Company ____________________________ Name ______________________ Address __________________________________________________________ Country _______________________ Phone Fax ________________________ E mail _____________________ Switch Information Switch type Hardware revision Software version Switch Configuration Port configurati...

Page 237: ...223 Getting in Touch with Technical Support SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Problem Description Network Installation Sketch ...

Page 238: ...224 SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Getting in Touch with Technical Support ...

Page 239: ...ridge Protocol Data Unit BRF Bridge Relay Function CAU Controlled Access Unit CRF Concentrator Relay Function DIS Disabled DSAP Destination Service Access Point DSRR Dynamic Source Route Recovery DTE Data Terminal Equipment DTR Dedicated Token Ring EIA Electronic Industry Association EPROM Erasable Programmable Read Only Memory ESD Electrostatic Discharge FDX Full duplex FSM Finite State Machine F...

Page 240: ...RN Learning LSN Listening MAC Media Access Control MAU Media Access Unit Mbps Megabits per second MIB Management Information Base MMF Multi Mode Fiber MTU Maximum Transfer Unit NMS Network Management System NNM Network Node Manager NSR Non Source Routed OBM Out of Band Management PROM Programmable Read Only Memory QTP Quad Token Ring Port Internal MAC controller for four ports RMON Remote Monitori...

Page 241: ...rtStack Interface Module STE Spanning Tree Explorer STP Shielded Twisted Pair or Spanning Tree Protocol TCP IP Transmission Control Protocol Internet Protocol TFTP Trivial File Transfer Protocol TIA Telecommunications Industry Association TKP Token Passing TrBRF Token Ring Bridge Relay Function TrCRF Token Ring Concentrator Relay Function TXI Transmit Immediate UAA Universal Administrated Address ...

Page 242: ...228 SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Abbreviations ...

Page 243: ... you cannot use a straight through modem cable to directly connect a terminal to the MANAGEMENT port For a terminal connection you can use either a null modem cable or a modem cable with a null modem adapter attached For a modem connection you can use a standard modem cable This section provides pin out information for the cables you can use to connect to the MANAGEMENT port Cable Function Cable T...

Page 244: ...a modem TIA EIA 232 Null Modem Connections Use a null modem crossover cable shown in Figure 28 to connect the MANAGEMENT port to a terminal DTE with a 25 pin connector Alternatively you can use a modem cable and a null modem adapter DTR pin 20 and RTS pin 4 must be on or high on your terminal or in your terminal emulation program Pin Signal Name Shell CHS GND 3 TXD 2 RXD 7 RTS 8 CTS 6 DSR 5 SIG GN...

Page 245: ... pin Connector Use a null modem crossover cable shown in Figure 29 to connect the MANAGEMENT port to a terminal DTE with a 9 pin connector Alternatively you can use a modem cable and a null modem adapter DTR pin 4 and RTS pin 7 must be on or high on your terminal or in your terminal emulation program Figure 29 EIA 232 Null Modem Cable for 9 pin Connector ...

Page 246: ...ugh cable Diagrams of these cables follow Straight Through 100 Ohm 120 Ohm Cable The switch RJ 45 connector makes ground available on the shield and on pins 1 2 7 and 8 Shielded cables will provide continuity for ground to any shielded connector on the other end of the cable Figure 30 Straight Through Cable 150 Ohm IBM STP Data Connector to RJ 45 Straight Through Cable Figure 31 Data Connector to ...

Page 247: ...ies and maximum flexibility for the network configuration If you are installing new cabling for data applications it is recommended that you For lobe cabling from the telecommunications closet to the wall outlet it is recommended that 150 ohm STP or four pair Category 5 cable that meets the international cable standard ISO IEC 11801 or North American cabling standard EIA TIA 568A For backbone cabl...

Page 248: ...wed to accommodate patch cables unless otherwise specified Ring Speed Types 1 and 1A Types 2 and 2A Type 8 Type 9 4 Mbps 750 m 2460 ft 750 m 2460 ft 376 m 1234 ft 500 m 1640 ft 16 Mbps 430 m 1410 ft 430 m 1410 ft 215 m 705 ft 295 m 968 ft 100 Mbps 90 m 295 ft See the Note Not Supported Not Supported Not Supported Note An additional 10 m 33 ft UTP 100 Ohm CAT 5 lobe length and a maximum of two UTP ...

Page 249: ... for dedicated media segments on page 234 Note The acceptable cable lengths are defined by the hub or concentrator attached to the switch port but in general the distances are half of that stated in the tables above for dedicated media segments Ring Speed 100 or 120 Ohm Category 4 100 or 120 Ohm Category 5 4 Mbps 350 m 1148 ft 350 m 1148 ft 16 Mbps 200 m 656 ft 200 m 656 ft 100 Mbps Not Supported ...

Page 250: ...236 SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Cable and Pin Information ...

Page 251: ... characteristics 15 chassis 58 chassis accessibility 43 chassis overheat caution 43 checking 62 cold boot 73 communication problems 72 Community Strings screen 203 concentrator relay functions 21 configuration 75 Configuration menu 79 Configure Filters screen 118 Configure Port Security Mode screen 120 congestion control 24 connecting a network management console 69 connecting the console 70 conne...

Page 252: ...h Limit 45 front panel 5 FSM 225 FTP 225 Full SNMP 35 full duplex 2 19 FWD 225 G General Statistics screen 163 greeting screen 74 H half duplex 2 19 hardware revision level 85 HDX 225 high availability 11 I inspecting the package contents 56 instalation instructions summary 55 installation 12 installation preparation 41 IP Configuration screen 94 201 L LAA 226 labels 7 LAN 226 latency 19 LED 226 L...

Page 253: ...ration screen 106 Port Filtering Attributes screen 124 Port Pin Outs 229 Port Spanning Tree Parameters screen 104 Port Status screen 160 port traffic monitoring 211 ports MANAGEMENT 5 power 43 Power Supply Information screen 159 power supply 40 problem report form 222 PROM 226 Protocol Class Assignment screen 123 Protocol Filters menu 122 protocols supported 17 R rack 58 rack mounting instructions...

Page 254: ... obtaining 215 site requirements 43 SMP 226 SNA 226 SNAP 227 SNMP 35 227 monitoring the network with 201 SNMP configuration 97 SNMP Configuration screen 202 SNMP setup 201 SNMP trap tables 86 Source Route Bridging 22 Source Route Transparent 23 SPAN 227 spanning tree VLAN 86 Spanning Tree for BRF screen screens Spanning Tree for BRF 99 Spanning Tree for CRF screen 101 spanning tree information 188...

Page 255: ... TrCrf 227 troubleshooting 215 troubleshooting procedures 216 twisted pair cable pinouts 232 TXI 227 TXI Information screen 173 U UAA 227 UNA 227 unknown address 20 unpacking 45 before installation 56 UTP 227 V View Port Filters screen 121 VLAN 227 filters 87 IP 87 SNMP trap tables 86 spanning tree 86 VLAN Address Table screen 182 VLAN configuration 86 VLAN Configuration menu 87 VLAN Configuration...

Page 256: ...index 6 SmartStack STS16 20D STS16 20R Token Ring Switches Installation and User Guide Index ...

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