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12-12

C

HAPTER

 12: ATM, LAN E

MULATION

, 

AND

 V

IRTUAL

 LAN

S

Bridge Forwarding

Database

In order to forward data frames efficiently to both local LAN stations on 
the transparent bridge as well as to remote LAN stations represented by 
other LECs on the ATM network, a combined Forwarding Database (FDB) 
is established and maintained in the bridge. This FDB combines two 
tables. The first table is the FDB of the transparent bridge itself: a list of 
local LAN station MAC addresses together with the numbers of the 
bridge port to which they are attached (see “Forwarding Database” on 
page 11-7). The second table, called the

 LE ARP-cache

, contains a list of 

remote LAN station MAC addresses together with the ATM addresses of 
the remote LECs which represent them. When a data frame is received at 
the bridge it searches its FDB for the destination MAC address. If the 
address is found to be local, the frame is forwarded to the appropriate 
bridge port. If the address is remote, the frame is sent over ATM to the 
destination LEC.

The part of the FDB of the bridge corresponding to the transparent bridge 
is populated as in a standard bridge (see “Forwarding Database” on page 
11-7). The ARP-cache is populated by the following methods:

Q

Address resolution - querying the LES

Q

Address learning - from received data packets

Address Resolution

When the bridge needs to forward a unicast data frame whose 
destination MAC address is not found in its FDB it attempts to locate a 
LEC that represents the destination MAC address on the ATM network. 
To do this, it turns to the LES in a process called 

address resolution

.

As mentioned above, the LES is the central “directory” service for 
verifying LEC ATM addresses on an ELAN (see “LAN Emulation Server” on 
page 12-6). The LEC submits an 

LE_ARP

 (LE Address Resolution Protocol) 

Request

 to the LES. If an LEC ATM address corresponding to the 

submitted MAC address is found in the LES table it is transmitted back to 
the requesting LEC as an 

LE_ARP Response.

 In case the requested address 

is not found at the LES, the LES will forward the query to other LECs to 
search the non-registered addresses and then return a positive response 
back to the requesting LEC. On receipt of an LE_ARP Response the bridge 
records the destination LEC ATM address together with the destination 
MAC address in its FDB ARP-cache. 

abtthgde.book  Page 12  Tuesday, June 23, 1998  10:29 AM

Содержание 7600

Страница 1: ... http www 3com com 7600 Fast Ethernet Card User Guide P r Part No DUA7600 0AAA01 Published November 1997 abtthgde book Page i Tuesday June 23 1998 10 29 AM ...

Страница 2: ...Rights Legend Use reproduction or disclosure is subject to restrictions set forth in subparagraph a through d of the Commercial Computer Software Restricted Rights Clause at 48 C F R 52 227 19 and the limitations set forth in 3Com Corporation s standard commercial agreement for the software Unpublished rights reserved under the copyright laws of the United States If there is any software on remova...

Страница 3: ...d 1 1 Port Configurations 1 1 Connectors 1 3 LEDs 1 3 7600 Card Capabilities 1 3 7600 Card Benefits 1 4 Ethernet switching Features 1 4 Virtual LANs 1 4 Traffic Management 1 5 Device Management 1 5 Typical Applications of the 7600 Card 1 5 Fast Ethernet Backbone 1 5 Server Farm 1 7 2 INSTALLATION AND POWER UP Safety Precautions 2 1 Mesures de sécurité 2 2 Vorsichtsmaßnahmen 2 3 Installing and Remo...

Страница 4: ... 1 CELLplex 7000 Integrated Fast Setup 3 2 Setup Modes 3 2 Setup Procedure Sections 3 4 Navigation Aids 3 4 Integrated Fast Setup Operation 3 5 Example Dialog 3 6 Multi context Fast Setup 3 10 Setup Procedure Sections 3 10 Editing Guidelines 3 11 Navigation Aids 3 11 Multi context Setup Operation 3 12 Sample Screen Dialog 3 12 4 LOCAL MANAGEMENT BASICS Management Capabilities 4 1 Menu Hierarchy 4 ...

Страница 5: ...0 Display All Entries in Forwarding Database 6 12 Display Learned Entries in Forwarding Database 6 14 Display Static Entries in Forwarding Database 6 15 Enter or Modify a Static Address in FDB 6 19 Block a Static Address 6 19 Remove a Static Address from FDB 6 20 Display STP Enable Status 6 21 Disable STP on Bridge 6 21 Display Bridge STP Attributes 6 22 Update Bridge wide STP Parameters 6 24 Upda...

Страница 6: ...nfiguration 8 4 Update LECS Address 8 6 Update ELAN Name 8 6 Update LES Address 8 7 Enable LECS Address via ILMI 8 7 Display LEC Operational Parameters 8 8 Update LEC Operational Parameters 8 9 Control timeout 8 9 VCC timeout period 8 10 Aging time 8 10 Forward delay time 8 11 Topology change flag 8 11 Expected LE_ARP response time 8 11 Flush timeout 8 12 Path switching delay 8 12 Connection compl...

Страница 7: ...uration 10 5 Set System Configuration Mode 10 6 Set Store and Forward Mode 10 7 Display Timeout Parameters 10 8 Display Timeout Delays 10 11 Update Hardware Timeout Delay 10 11 Update Software Timeout Delay 10 12 Reset Flash Memory 10 12 Update Read access Password 10 13 Update Write access Password 10 13 Update Admin access Password 10 14 Enable Disable Event Messages 10 14 Reset and Reboot 10 15...

Страница 8: ...l Switching 12 2 Virtual Channels 12 3 Virtual Channel Connection 12 3 Virtual Path Connection 12 3 Permanent Virtual Channels 12 3 Switched Virtual Channels 12 4 Interim Local Management Interface ILMI 12 4 ILMI Management Information Base MIB 12 4 ATM Address Registration 12 5 LAN Emulation Overview 12 5 Emulated LAN Components 12 5 LAN Emulation Client 12 6 LAN Emulation Server 12 6 Broadcast a...

Страница 9: ... Card 12 18 Connecting Local Segments to a vLAN 12 18 Virtual LANs for three Workgroups 12 21 13 TRAFFIC MANAGEMENT IN THE ATM NETWORK Overview 13 1 Flow Control Model for ABR 13 2 Traffic Management Concepts 13 3 Explicit Forward Congestion Indication 13 3 Cell Loss Priority 13 3 Implicit Rate Control 13 3 Explicit Rate Control 13 4 Traffic and Congestion Control Functions 13 4 Traffic Rates Shap...

Страница 10: ...3Com Bulletin Board Service A 1 Ask3Com on CompuServe A 2 3ComFacts Automated Fax Service A 2 Telephone Support A 2 Support from 3Com A 3 Support from Your Network Supplier A 3 Returning Products for Repair A 4 B TROUBLESHOOTING Solving Common Problems B 1 Terminal Does Not Show Anything B 1 ACT LED Not Blinking B 1 Ethernet Forwarding Failures Fx port B 1 Related Diagnostic Procedures B 2 Cleanin...

Страница 11: ...ators C 2 Management C 2 Standards Compliance C 3 Safety C 3 Electromagnetic Emissions Agency Certifications C 3 Communications Protocols C 3 Management Protocols C 3 GLOSSARY abtthgde book Page ix Tuesday June 23 1998 10 29 AM ...

Страница 12: ... The following table shows where to find specific information If you are looking for information about Turn to An overview of the 7600 Card key features and technologies Chapter 1 Installation and Power Up of the 7600 Card Chapter 2 Setting up the 7600 Card Chapter 3 Local Management Basics Chapter 4 Configuring Virtual LANs Chapter 5 Ethernet and Bridge Management Tasks Chapter 6 Managing ATM Res...

Страница 13: ... continued Turn to Table 1 Notice Icons Icon Type Description Information Note Information notes call attention to important features or instructions Caution Cautions alert you to personal safety risk system damage or loss of data Warning Warnings alert you to the risk of severe personal injury Table 2 Typographical Conventions Type Description Courier Used for sample displays to show what appears...

Страница 14: ...tem components User Guide Learn about various configurations in which you can install your 7600 Card User Guide Learn about how you administer and manage the 7600 Card User Guide Learn about ATM and how it is implemented in the 7600 module User Guide Learn about Ethernet Switching and how it is implemented in the 7600 Card User Guide Learn about LAN Emulation and how it is implemented in the 7600 ...

Страница 15: ...LED indicators Q Port position indicators Port Configurations The 7600 Card provides a base card comprising eight Fast Ethernet 100BASE Fx fiber or 100BASE Tx copper connectors and four optional Fast Ethernet physical modules which can be installed in configurations of two 100BASE Fx or 100BASE Tx ports per module Fast Ethernet ports on the base card are numbered 1 to 8 left to right Fast Ethernet...

Страница 16: ... 1 OVERVIEW OF THE 7600 CARD Figure 1 1 Front Panel of the 7600 Card with full configuration Figure 1 2 Base card with plates covering ports 9 16 optional modules abtthgde book Page 2 Tuesday June 23 1998 10 29 AM ...

Страница 17: ... 1 3 Physical module with SC connector for fiber ports Figure 1 4 Physical module with RJ 45 connector for copper ports LEDs LEDs at the left side of the front panel indicate the operational status of the 7600 Card and each of the Fast Ethernet ports 7600 Card Capabilities The 7600 Card an integrated 16 port Fast Ethernet card is part of a series of Ethernet interface cards developed for the CELLp...

Страница 18: ...d which implements Fast Ethernet standards 802 3u and Bridging standard 802 1d includes the following key features Q Auto sensing full duplex half duplex supported by the TX interface Q Auto sensing 10 100 Mbps supported by the TX interface Q Rate based flow control Q Full rate multicast support Q Address table capacity of up to 32k entries Q Full rate forward filter Q IEEE 802 1d Spanning Tree Pr...

Страница 19: ...al connected by serial line to the local management terminal port on the host CELLplex 7000 switch Q Telnet over the network via IP connectivity to host CELLplex 7000 switch from a PC or a work station connected in band Q Transcend Enterprise Manager or any other SNMP based network management application connected over the network to the 7600 Card s IP For more information see Connecting to a Loca...

Страница 20: ...1 6 CHAPTER 1 OVERVIEW OF THE 7600 CARD Figure 1 5 Fast Ethernet backbone abtthgde book Page 6 Tuesday June 23 1998 10 29 AM ...

Страница 21: ...a server farm Up to 16 servers can be connected through Fast Ethernet links to the 7600 Card The host CELLplex 7000 is shown connected through ATM links to the Super Stack II Switch 2700 units located on different floors Figure 1 6 Server farm abtthgde book Page 7 Tuesday June 23 1998 10 29 AM ...

Страница 22: ...I Chapter 2 Installation and Power up Chapter 3 Fast Setup STARTING UP abtthgde book Page 9 Tuesday June 23 1998 10 29 AM ...

Страница 23: ... System States Q Power up Safety Precautions All servicing should be undertaken ONLY by qualified service personnel Read the following safety precautions carefully to reduce the risk of electric shock and fire 3Com recommends that you use a wrist strap connected to a proper ground when handling replacement parts This helps prevent the module from being damaged by electrostatic discharge Additional...

Страница 24: ... bande attachée au poignet et reliée à la terre Cela aidera à éviter que la pièce ne soit endommagée par une décharge électrostatique De plus lorsqu il n est pas utilisé le module doit être conservé dans un emballage antistatique Si le système est alimenté lors de l installation ou du remplacement d un module ne jamais insérer d objet métallique tel qu un tourne vis ou un doigt portant un bijou da...

Страница 25: ...in einem antistatischen Beutel aufbewahrt werden Steht das System unter Strom wenn sie ein Modul installieren oder auswechseln führen Sie keine Metallgegenstände wie einen Schraubenzieher oder einen Finger mit Schmuck in den offenen Schlitz ein Das könnte zu Verbrennungen oder anderen Körperschäden führen sowie auch zu Schäden am System Nehmen Sie das Gerät NICHT in Betrieb falls die Temperatur de...

Страница 26: ...ejector tabs are still in their outermost position and give the module a firm push to ensure that the card has fit snugly into the connectors on the backplane 4 Push the ejector tabs to their innermost position to lock the module in place You may have to apply pressure on the tabs in order to ensure that the board is firmly in place in the connectors in the backplane An audible click indicates tha...

Страница 27: ...ors on the physical module are aligned with the unoccupied cutout on the front panel and insert the connector into the cutout See 1 in Figure 2 1 Figure 2 1 Installing a Fast Ethernet physical module 4 Lower the card on to the spacers located on the 7600 Card making sure that the screws on the physical module fit into the spacers See 2 in Figure 2 1 5 Tighten the screws to fix the module in place ...

Страница 28: ...n the CELLplex 7000 can be managed via the serial port using an RS 232 connection through a female 9 pin D type connector During installation use a shielded cable for the management connector The CELLplex 7000 switch module s serial port is set to function with the connected equipment according to the following values Table 2 1 Serial Port Settings Serial Port Setting Value Baud Rate 19200 Charact...

Страница 29: ... LEDs P ower F ail and A ctive under the label SYS on the left side of the LED panel Table 2 2 shows the correlation between the current system state and SYS LEDs Figure 2 2 7600 Card LEDs Table 2 3 also provides information about the system states but is organized by system status LED The meaning of each SYS LED mode is described Table 2 2 7600 Card System States SYS LED System State Power green ...

Страница 30: ...d module as well as the individual data connections of each Fast Ethernet LED display Fast Ethernet Status Indicators Referring to Figure 2 2 each of the 16 multi color LEDs corresponds to the 16 Fast Ethernet ports in each connector on the front panel according to the same geometrical configuration Each multi color LED can appear in one of three states green orange or off Table 2 3 System Status ...

Страница 31: ...llowing table Table 2 4 Fast Ethernet Port LEDs LED Color Meaning Link status Green The port is connected Packet status Orange The orange light intensity indicates the traffic percentage There is active traffic on the port Link and Packet Green and Orange The port is connected and traffic is flowing into the port Off The port is not connected abtthgde book Page 9 Tuesday June 23 1998 10 29 AM ...

Страница 32: ...as been applied you must make the logical connections that enable the 7600 Card and its attached devices to function as a networked whole There are two ways to perform a Fast Setup that will enable the 7600 Card to begin functioning almost immediately Q Performing the Integrated Fast Setup procedure of the host CELLplex 7000 which configures all its interface cards in one session Q Accessing the 7...

Страница 33: ...Setup Virtual LANs vLANs are created box wide Each vLAN is defined for both the Switch and all the Interface Cards installed in the box There is only one admin vLAN for the box vLANs are set up in two stages First in the LE Client section a number of potential vLANs are created according to the requirement of the network Next in the Virtual Network Configuration section the potential vLANs become ...

Страница 34: ...setup is selected the parameters in the Interface Cards revert to their default values If none of these situations are detected the Full setup mode is executed automatically Setting Special Parameters In case one or more individual Interface Cards requires one of the special situations referred to in the previous section or needs to remain unaltered you will need to do one of the following Q Use t...

Страница 35: ...n by pressing Enter only Virtual Network Configuration Box ports are assigned to potential vLANs Admin VN Management Configuration Sets up admin vLAN in all modules including setting IP address See CELLplex 7000 Manual Confirmation Setup is confirmed by operator Table 3 2 Setup Procedure Navigation Aids Type To perform Jump to previous section Jump to next section S Jump to section according to do...

Страница 36: ...that have previously been carried out in any of the installed Interface Cards The following warning message is displayed when this is about to occur Note Full fast setup special module configuration will be overridden CP7000 switch module Main Menu 1 SYS Platform config 2 LEM Lan Emulation 3 CON Connections 4 STS Statistics 5 DIA Testing Diagnostics 6 FTR ATM features 7 LOG Logout 8 VER Version 9 ...

Страница 37: ...The flash configuration will be displayed below Update if needed and then hit Enter To move between sections enter the following characters at end of line Back and forth in sections S Jump to section ID S Back to beginning of setup To end of setup Only in Virtual Network Configuration section group slot item port G Jump to group G I Jump to item I Update all group items Update all section items Ne...

Страница 38: ... NNI type of port 3 3 U NI N NI G ateway U NNI type of port 3 4 U NI N NI G ateway U NNI type of port 4 1 U NI N NI G ateway U NNI type of port 4 2 U NI N NI G ateway U NNI type of port 4 3 U NI N NI G ateway U NNI type of port 4 4 U NI N NI G ateway U NNI type of port 5 1 U NI N NI G ateway U NNI type of port 5 2 U NI N NI G ateway U NNI type of port 5 3 U NI N NI G ateway U NNI type of port 5 4 ...

Страница 39: ...ation Fast Ethernet 3 1 belongs to VN 1 6 1 Admin VN Fast Ethernet 3 2 belongs to VN 1 6 2 Fast Ethernet 3 3 belongs to VN 1 6 2 Fast Ethernet 3 4 belongs to VN 1 6 3 Fast Ethernet 3 5 belongs to VN 1 6 3 Fast Ethernet 3 6 belongs to VN 1 6 4 Fast Ethernet 3 7 belongs to VN 1 6 4 Fast Ethernet 3 8 belongs to VN 1 6 5 Fast Ethernet 3 9 belongs to VN 1 6 5 Fast Ethernet 3 10 belongs to VN 1 6 5 Fast...

Страница 40: ...E parameters Saving Network Prefix Saving resident LECS Address Saving active LECS Address Saving NNI parameters The switch new configuration has been saved Now applying the module in slot 4 Due to new VN configuration some saved static entries in slot 4 have been invalidated The new VN configuration in slot 4 has been applied and saved Now applying the module in slot 5 Due to new VN configuration...

Страница 41: ...tomatically so that you can set up all the ports in the device in one continuous dialog Setup Procedure Sections The following describes the main steps of the Multi context Fast Setup Q Virtual Network Configuration Each Fast Ethernet port is assigned to a logical bridge Initially all ports default to the admin vLAN Bridge 0 is the default bridge to which port 1 is always initially assigned for ea...

Страница 42: ...as though it has already been typed and may be either altered and entered or immediately entered as is Q The parameters may be edited as detailed in Chapter 4 Navigation Aids The following short cut characters are provided to move between sections of the setup procedure Table 3 4 Setup Procedure Navigation Aids Type To go to Previous section Next section Next parameter Last parameter Accept Change...

Страница 43: ...ster System level functions 2 ethernet Administer Ethernet ports 3 bridge Administer Bridging 4 atm Administer ATM resources 5 le Administer LAN Emulation Clients 6 vns Administer Virtual Networks configuration 7 management Administer IP and SNMP 8 quit Logout of the administration console 9 fast Fast Setup Multi context Fast Setup Utility Answer Y es or N o and then hit Enter To move between ques...

Страница 44: ...ridge 1 ATM connection Y N Y Emulated LAN ELAN Configuration Enable get LECS address via ILMI Y N Bridge 0 ELAN name elan156_0 Bridge 0 LES 11 22 33 44 55 66 77 88 99 0 aa bb cc dd ee ff 11 22 33 44 Management Configuration Bridge 0 IP Addr 140 204 140 177 Bridge 0 Default Gateway 140 204 140 99 Bridge 0 Subnet Mask 255 255 0 0 Bridge 0 NMS Addr 140 204 140 165 Bridge 1 IP Addr 140 204 140 178 Bri...

Страница 45: ...Section At this point you are asked if you want to enter Fast Setup for contexts 1 2 and 3 System Mode Configuration Enter system mode L E L Accept Changes if changes have been made Save changes Y N Y This will apply the changes and reset the affected bridges only Are you sure Y N abtthgde book Page 14 Tuesday June 23 1998 10 29 AM ...

Страница 46: ...apter 6 Fast Ethernet and Bridge Management Tasks Chapter 7 Managing ATM Resources Chapter 8 Managing LAN Emulation Clients Chapter 9 Setting Network Parameters Chapter 10 Managing System Functions 7600 CARD MANAGEMENT TASKS abtthgde book Page 15 Tuesday June 23 1998 10 29 AM ...

Страница 47: ...include Q System functions administration Q Ethernet ports administration Q Basic bridge and port features administration Q ATM resources configuration Q LAN Emulation Clients administration Q Virtual Networks management Q IP address configuration for system access by Telnet SNMP or FTP Menu Hierarchy The management commands are organized in a hierarchical menu system At first the Main menu is dis...

Страница 48: ...w symbol indicates that the menu option branches off into one or more submenus 7600 Card in slot 2 Context 0 main menu 1 system Administer System level functions 2 ethernet Administer Ethernet ports 3 bridge Administer Bridging 4 atm Administer ATM resources 5 le Administer LAN Emulation Clients 6 vns Administer Virtual Networks configuration 7 management Administer IP and SNMP 8 quit Logout of th...

Страница 49: ...tion number or option name Only the first unique character s of the menu option name needs to be entered For menu options below the Main menu the menu option label precedes the angle bracket prompt Successive submenu prompts define the hierarchical path from the most recently invoked and most deeply embedded submenu to the original root Main menu option When there are no more submenus to call up t...

Страница 50: ...ng such as an out of range parameter the display will respond with an error message indicated by a three asterisk prefix Parameter Entry When prompted for parameters you can enter them all on the same command line with blanks in between or you can enter some or all of them on separate command lines You are repeatedly prompted for the remaining parameter as follows Enter parameter s Bridge No Bridg...

Страница 51: ...ce Card module 1 4 Table 4 3 Editing Aids Type To perform Clear the value of the parameter last entered Clear the values of all the parameters in the list just entered Up arrow Retrieve a previous command Down arrow Get the next command Backspace Delete the character preceding the insertion point Del Delete the character following the insertion point Ins Toggle between Insert and Overwrite modes 5...

Страница 52: ...stem 1 display 10 2 2 status 10 3 3 update 10 3 5 mode 10 6 6 s f 10 7 7 tuning 10 7 8 timeout 1 info 10 8 2 display 10 11 3 hardware 10 11 4 software 10 12 5 flash 10 12 6 password 1 read 10 13 2 write 10 13 3 admin 10 14 7 event 10 14 8 reset 10 15 9 load 1 display 10 3 2 tftp 10 3 3 local 10 4 Ethernet Menu 2 ethernet 1 display 6 2 2 status 6 5 3 bcast 1 display 6 5 2 update 6 6 abtthgde book P...

Страница 53: ...w 6 19 5 block 6 19 6 remove 6 20 4 stp 1 display 6 21 2 bridge 1 display 6 21 2 priority 6 24 3 max age 6 24 4 hello 6 24 5 forward 6 25 3 port 1 display 6 26 2 priority 6 27 3 cost 6 28 4 status 6 27 4 status 6 21 5 aging 6 10 ATM Menu 4 atm 1 display 7 2 2 address 1 display 7 3 4 change 7 4 abtthgde book Page 7 Tuesday June 23 1998 10 29 AM ...

Страница 54: ...enu 5 le 1 display 8 2 2 config 1 display 8 4 4 cs addr 8 6 5 elan name 8 6 6 les addr 8 7 7 mode lecs 8 7 3 operational 1 display 8 8 2 control 8 9 3 vcc 8 10 4 aging 8 10 5 forward 8 11 6 topology 8 11 7 arp 8 11 8 flush 8 12 9 path switch 8 12 10 completion 8 13 4 lec control 8 14 5 reset 8 17 6 flood 8 17 abtthgde book Page 8 Tuesday June 23 1998 10 29 AM ...

Страница 55: ...enu 6 vns 1 display 5 1 4 ethernet 5 2 5 atm 5 3 Network Management Menu 7 management 1 ip 1 display 9 2 4 ip addr 9 2 5 gateway 9 3 6 mask 9 4 2 snmp 1 display 9 4 2 nms addr 9 5 abtthgde book Page 9 Tuesday June 23 1998 10 29 AM ...

Страница 56: ...bridge and ensuring that there is an internal ATM connection to an ELAN For general information about bridges see Bridges in the 7600 Card on page 12 10 The following bridge configuration tasks are covered Configuring Bridges Q Display current bridge configuration 5 1 Q Attach Fast Ethernet port to bridge 5 2 Q Attach internal ATM port to bridge5 3 Display Current Bridge Configuration Displays the...

Страница 57: ...ard on page 12 10 Table 5 1 Task Actions Menu Sequence Enter Result 6 vns 1 display None Current bridge configuration parameters are displayed Table 5 2 Bridge Configuration Parameters Parameter Description Bridge The bridge number Fast Ethernet Ports The Fast Ethernet ports assigned to the bridge ATM Q Yes The internal ATM downlink port is assigned to the bridge i e the bridge is connected to an ...

Страница 58: ...s see Bridges in the 7600 Card on page 12 10 The ATM port in context 1 must always be attached to bridge 0 Example Enter 6 5 0 Y The internal ATM port is attached to bridge 0 Table 5 3 Task Actions Menu Sequence Enter Result 6 vns 4 ethernet 1 Bridge Number 0 3 2 Fast Ethernet Port Number 1 4 Specified Fast Ethernet port is attached to specified bridge Table 5 4 Task Actions Menu Sequence Enter Re...

Страница 59: ...rnet Port Q Display Broadcast Throttling Attributes Q Update Broadcast Threshold Q Enable Disable Broadcast Throttling Q Update Fast Ethernet Port Managing Ethernet Bridges Q Display Broadcast Throttling Attributes Q Update Bridge aging time Q Bridge port Attributes and Statistics Managing the Bridge Forwarding Database Q Display All Entries in Forwarding Database Q Display Learned Entries in Forw...

Страница 60: ...dge port Q Display Bridge port STP Attributes Q Disable Bridge port Q Update Bridge port STP parameters Q Update Bridge port priority Q Update Bridge path cost Fast Ethernet Port Attributes and Statistics Dsplays the Fast Ethernet port attributes and statistics for a specified Fast Ethernet port see Fast Ethernet Ports on page 11 5 for general information about Ethernet ports Table 6 1 Task Action...

Страница 61: ...f Fast Ethernet Port Fx Fiber or Tx Copper Mode Auto negotiation mode Q No auto negotiation Q All auto negotiation Q Duplex auto negotiation Q Speed auto negotiation Duplex Transmission mode Full or half duplex Speed Transmission speed 10M or 100M Table 6 4 Ethernet Port Statistics Name Description In Octets All octets received on the port In Ucast Unicast frames received on the port excluding dis...

Страница 62: ...ds Out Bcast Broadcast frames transmitted out of the port including discards Out Discards All frames not transmitted out of the port for internal reasons Out Errors All frames not transmitted out of the port due to errors Table 6 4 Ethernet Port Statistics continued Name Description Ethernet port 1 Mac address 00c0da1803c0 Installed Yes Type Fx Mode Non Autonegotiation Duplex Full Speed 100M Admin...

Страница 63: ...shold frames are discarded When the number of broadcast frames goes below the low threshold the frames are retained Table 6 5 Task Actions Menu Sequence Enter Result 2 ethernet 2 status 1 Ethernet port number 1 4 2 U p D own Administrative Status of Port is enabled or disabled Table 6 6 Task Actions Menu Sequence Enter Result 2 ethernet 3 bcast 1 display None Broadcast throttling attributes are di...

Страница 64: ...s Entering Enable returns the previous threshold values Enable status Broadcast throttling enabled disabled for this port Table 6 7 Broadcast Throttling Attributes continued Name Description Port 1 high threshold 500 low threshold 300 Enabled Port 2 high threshold 500 low threshold 300 Enabled Port 3 high threshold 500 low threshold 300 Enabled Port 4 high threshold 500 low threshold 300 Enabled B...

Страница 65: ... parameter for the duplex mode The Tx port type allows selection of autonegotiation for speed and duplex mode individually If one of these is not selected for autonegotiation it must be given a fixed parameter manually Table 6 9 Task Actions Menu Sequence Enter Result 2 ethernet 3 bcast 3 state 1 Ethernet port number 1 4 2 D isable E nable Broadcast throttling for the port is e nabled or d isabled...

Страница 66: ... bridge attributes and statistics For more information about bridges in Ethernet LANs see Transparent Bridges on page 11 6 Table 6 11 Task Actions for Tx Port Type Menu Sequence Enter Result 2 ethernet 4 update 1 Ethernet port number 1 4 2 Auto mode N on Auto A ll D uplx S peed 3 Speed 10 100 4 Duplex H alf F ull If D or N was entered in Step 2 If S or N was entered in Step 2 The Fast Ethernet Tx ...

Страница 67: ...in the bridge Physical Port The physical Ethernet port to which the logical bridge port is mapped Aging Time The bridge aging time Learned Discards Addresses that should have been learned but were discarded because of lack of space in the bridge s Forwarding Database Bridge 0 Bridge address 00c0da1803c0 Bridge STP is Disabled Bridge port Physical 1 Ethernet port 1 2 Ethernet port 2 3 Ethernet port...

Страница 68: ...dge number 0 3 2 Bridge aging time secs The bridge FDB parameter bridge aging time for this bridge is updated Table 6 15 Task Actions Menu Sequence Enter Result 3 bridge 2 port 1 Bridge number 0 3 2 Bridge port Number 1 5 Bridge port attributes and statistics are displayed Table 6 16 Bridge port Attributes and Statistics Name Description Bridge The number of the bridge Port The number of the bridg...

Страница 69: ... to excessive transit delay through the bridge Maximum Transfer Unit MTU Exceeded Discards The number of frames discarded by the port due to an excessive size Table 6 16 Bridge port Attributes and Statistics continued Name Description Bridge 0 Port 1 Physical Ethernet port 1 In Frames 2 Out Frames 4 In Discards 0 Delay Exceeded Discards 0 MTU Exceeded Discards 0 abtthgde book Page 11 Tuesday June ...

Страница 70: ...ing Database on page 11 7 Example Enter 3 3 1 0 The following is displayed Table 6 17 Task Actions Menu Sequence Enter Result 3 bridge 3 fdb 1 display 1 Bridge number 0 3 The contents of all address tables in the bridge FDB are displayed Table 6 18 Forwarding Database Fields Name Description Addr The MAC address to which the entry relates Port The bridge port related to the entry Status Status Q M...

Страница 71: ...c2000009 Port 0 Status Management Addr 0180c200000a Port 0 Status Management Addr 0180c200000b Port 0 Status Management Addr 0180c200000c Port 0 Status Management Addr 0180c200000d Port 0 Status Management Addr 0180c200000e Port 0 Status Management Addr 0180c200000f Port 0 Status Management Addr aabbccddeeff Port 0 Status Management Addr 0020af8dcd78 Port 1 Status Learned Addr 00c0da1803c0 Port 1 ...

Страница 72: ... The following is displayed Figure 6 6 Learned Forwarding Database Display Table 6 19 Task Actions Menu Sequence Enter Result 3 bridge 3 fdb 2 learned 1 Bridge number 0 3 The contents of the learned address table in the bridge FDB are displayed Table 6 20 Learned Forwarding Database Fields Name Description Addr The MAC address to which the entry relates Port The bridge port related to the entry St...

Страница 73: ...ntries are either predefined or have been configured via management For more information about static entries in the Forwarding Database see Static Addresses on page 11 8 Table 6 21 Task Actions Menu Sequence Enter Result 3 bridge 3 fdb 3 static 1 Bridge number 0 3 The contents of the static address table in the bridge FDB are displayed abtthgde book Page 15 Tuesday June 23 1998 10 29 AM ...

Страница 74: ...ntify the ATM destination must be provided Stat The status of the entry Q Read Only Predefined entries that may not be removed or updated Q Permanent Permanent entries that will remain across system resets Q Delete On Reset Temporary entries that will be deleted when the device is reset Q Delete On Timeout Temporary entries that will be deleted after a specified period of time aging time Q Other B...

Страница 75: ...llowing table If for example the Allowed to field is f800 then the frames will be forwarded to bridge ports 1 2 3 4 and 5 If the Allowed to field is 1800 then the frames will be forwarded to bridge ports 4 and 5 Table 6 23 Hexadecimal Codes for Displaying Multiple Bridge Ports Bridge Ports Hex Value Bridge Ports Hex Value 1 2 3 4 5 X X X 0 0 0 1 1 0 0 0 1 1 0 0 1 0 2 0 0 1 0 2 0 0 1 1 3 0 0 1 1 3 ...

Страница 76: ...000007 Rcv P 0 Alwd to 0000 M ID Stat Read Only Addr 0180c2000008 Rcv P 0 Alwd to 0000 M ID Stat Read Only Addr 0180c2000009 Rcv P 0 Alwd to 0000 M ID Stat Read Only Addr 0180c200000a Rcv P 0 Alwd to 0000 M ID Stat Read Only Addr 0180c200000b Rcv P 0 Alwd to 0000 M ID Stat Read Only Addr 0180c200000c Rcv P 0 Alwd to 0000 M ID Stat Read Only Addr 0180c200000e Rcv P 0 Alwd to 0000 M ID Stat Read Onl...

Страница 77: ...k a Static Address Specify bridge ports on which communication is blocked for a static address in the FDB For more information about static entries in the Forwarding Database see Static Addresses on page 11 8 The blocked input and output bridge ports are specified by single hexadecimal numbers as in Table 6 20 Table 6 24 Task Actions Menu Sequence Enter Result 3 bridge 3 fdb 4 allow 1 Bridge numbe...

Страница 78: ... Static Addresses on page 11 8 Example Enter 3 3 6 0 0180c2000000 1 Table 6 25 Task Actions Menu Sequence Enter Result 3 bridge 3 fdb 5 block 1 Bridge number 0 4 2 Station address MAC address 3 Input bridge port number 0 5 0 for all ports 4 Output bridge port number s 1 5 or Member ID for the ATM port Communication is blocked on the specified ports for the static station address specified Table 6 ...

Страница 79: ...following is displayed Figure 6 8 STP Enable Status Display Disable STP on Bridge Disable and enable the STP on a specified bridge For more information about the STP enable status see Disabling the STP on page 11 8 Table 6 27 Task Actions Menu Sequence Enter Result 3 bridge 4 stp 1 display None The STP enable disable status is displayed for this bridge STP Status Bridge 0 STP is Disabled Table 6 2...

Страница 80: ...e Protocol The STP version as in IEEE 802 1D Bridge Priority A 2 octet value that allows the network manager to influence the choice of root bridge and the designated bridge Bridge Topology Changes The number of topology changes which have occurred since the bridge was last reset Bridge Designated Root The bridge assumed to be the root bridge Root Cost The cost of the path from this bridge to the ...

Страница 81: ...Time The value of the Hello Time parameter when the bridge is or is attempting to become the Root Bridge Forward Delay The value of the Forward Delay parameter when the bridge is or is attempting to become the root bridge Table 6 30 Bridge STP Attributes continued Parameter Description bridge 0 STP Attributes bridge STP is Disabled bridge Protocol 3 bridge Priority 32768 bridge Topology Changes 4 ...

Страница 82: ... max age Update the STP parameter bridge max age for a specified bridge Example Enter 3 4 2 3 0 2000 The bridge max age for bridge 0 is set to 2000 secs Update Bridge hello time Update the STP parameter bridge hello time for a specified bridge Table 6 31 Task Actions Menu Sequence Enter Result 3 bridge 4 stp 2 bridge 2 priority 1 Bridge number 0 3 2 Bridge priority The STP parameter bridge priorit...

Страница 83: ...delay for bridge 0 is set to 1500 secs Table 6 33 Task Actions Menu Sequence Enter Result 3 bridge 4 stp 2 bridge 4 hello 1 Bridge number 0 3 2 Bridge hello time The STP parameter bridge hello time for this bridge is updated Table 6 34 Task Actions Menu Sequence Enter Result 3 bridge 4 stp 2 bridge 5 forward 1 Bridge number 0 3 2 Bridge forward delay The STP parameter bridge forward delay for this...

Страница 84: ...eter transmitted by the designated Bridge for the LAN to which the port is attached Bridge Port Designated Cost Cost of the path to the root bridge offered by the designated port on the LAN to which this port is attached Bridge Port Designated Bridge ID of the bridge assumed to be the designated bridge for the LAN associated with the port The parameter is used a together with the designated port a...

Страница 85: ...ut the STP parameters Update Bridge port priority Update the STP parameter bridge port priority for a specified bridge bridge 0 port 1 STP Attributes Bridge port Priority 128 Bridge port State forwarding Bridge port Path Cost 100 Bridge port Designated Root 800000c0da1800a0 Bridge port Designated Cost 0 Bridge port Designated Bridge 800000c0da1800a0 Bridge port Designated port 8001 Bridge port For...

Страница 86: ...idge 0 is set to 100 Table 6 38 Task Actions Menu Sequence Enter Result 3 bridge 4 stp 3 port 2 priority 1 Bridge number 0 3 2 Bridge port Number 1 5 3 Bridge port priority The STP parameter bridge port priority for this bridge port is updated Table 6 39 Task Actions Menu Sequence Enter Result 3 bridge 4 stp 3 port 3 cost 1 Bridge number 0 3 2 Bridge port Number 1 5 3 Bridge path cost The STP para...

Страница 87: ...M network in the 7600 Card The following internal ATM port management tasks are covered Manage ATM port Q Display ATM Port Attributes and Statistics Q Enable Disable ATM Port Admin Status Manage Bridge ATM addresses Q Display Bridge ATM address Q Update Bridge ATM Address Manage Traffic Management Q Display TM Configuration Q Enable TM Q Display TM Clients Q Add TM Client Q Remove TM Client Update...

Страница 88: ...lly down Oper Status The operational status of the port up or down A down status may be caused by the port being administratively down In Octets ATM Layer All octets received on the ATM port to the ATM layer excluding Physical layer discards In Ucast ATM Layer All cells received on the ATM port to the ATM layer excluding Physical and ATM layer discards In Octets AAL5 Layer All octets received on t...

Страница 89: ... Version 3 0 ATM Layer statistics In Octets 2619649815 In Ucast 49427355 AAL5 Layer statistics In Octets 2372513040 In Ucast 24705762 Out Ucast 25826096 Table 7 3 Task Actions Menu Sequence Enter Result 4 atm 2 address 1 display None ATM addresses of the bridges are displayed Table 7 4 ATM Address Fields Field Description Bridge The bridge number ATM Address The ATM address assigned to the bridge ...

Страница 90: ...ommand to reset the ATM address so as to restore the automatic ILMI address registration for the specified bridge Source The source of the ATM addresses Q Automatically assigned by ILMI Q Manually assigned and saved in flash memory In order to use ILMI automatically this value should not be assigned manually State in ILMI State of the ATM address within ILMI If no address has been manually assigne...

Страница 91: ...er 4 4 1 The following is a sample Traffic Management configuration display Table 7 5 Task Actions Menu Sequence Enter Result 4 atm 2 address 4 change 1 Bridge Number 0 3 2 ATM Address or Q ATM address Updates ATM address of the bridges Q Restores the automatic ILMI address registration for this bridge Table 7 6 Task Actions Menu Sequence Enter Result 4 atm 4 tm 1 display None The Traffic Manageme...

Страница 92: ...ay Traffic Management remote Client Database The database entries are listed in the following table Traffic Management Configuration TM State is DISABLED TM TRAM update is DISABLED Dual rate mechanism is ENABLED Default profile is 1 Default profile for single users is 2 Operational profile is 3 Operational profile for single users is 4 Table 7 7 Task Actions Menu Sequence Enter Result 4 atm 4 tm 2...

Страница 93: ... Remote client ATM address ATM address of client in database Profile 1 32 3 Index of lookup table used to determine data transmission rates TM Peak rate 0 1 55e 08 1 55e 08 Peak data transmission rate in bps Table 7 9 Task Actions Menu Sequence Enter Result 4 atm 4 tm 3 client 1 display None The Traffic Management remote Client Database is displayed TM Remote Client Data Base Entry 1 TM is ENABLE ...

Страница 94: ...rom remote Client Database Table 7 10 Task Actions Menu Sequence Enter Result 4 atm 4 tm 3 client 2 add 1 ATM address 2 Profile 1 32 3 TM peak rate 4 TM enable Y N Client is added to the Traffic Management remote Client Database Remote client ATM address Profile 1 32 TM Peak rate TM enable Y N DD connection Entry added Table 7 11 Task Actions Menu Sequence Enter Result 4 atm 4 tm 3 client 3 remove...

Страница 95: ...3 0 3 1 3 0 The selected version is saved in flash Enable DisableATM Port Admin Status Enable or disable the ATM port for all bridges Setting the port to down will cause the port to be and stay operationally down Specify up to enable the ATM port or down to disable the ATM port Example Enter 4 8 U Table 7 12 Task Actions Menu Sequence Enter Result 4 atm 6 uni 3 0 or 3 1 The selected version is sav...

Страница 96: ...7 10 CHAPTER 7 MANAGING ATM RESOURCES ATM port is enabled The following screen message is displayed Context 0 Event ATM port Link Up abtthgde book Page 10 Tuesday June 23 1998 10 29 AM ...

Страница 97: ...ulated LAN in the 7600 Card The following LAN Emulation Client LEC management tasks are covered Display statistics Q Display LEC Statistics Q Display LEC Control frame Statistics Q Reset LEC Control frame Statistics Manage configuration parameters Q Display Current LEC Configuration Q Update LECS Address Q Update ELAN Name Q Update LES Address Manage operational parameters Q Display LEC Operationa...

Страница 98: ...lation Client LEC connection state and statistics for the specified bridge are displayed Table 8 2 LEC Attributes Attribute Description State The connection state of the LEC is one of the following Q Initial State Q LECs Connect Q Configure Q Join Q Bus Connect Q Operational In Octets All octets of LE frames received by the LEC In Ucast Unicast LE frames received by the LEC targeted to the device ...

Страница 99: ... by the device including LE AAL5 ATM and Physical layer discards Out Mcast Multicast LE frames transmitted from the LEC initiated by the device including LE AAL5 ATM and Physical layer discards Out Bcast Broadcast LE frames transmitted from the LEC initiated by the device including LE AAL5 ATM and Physical layer discards Out Discards All LE frames initiated by the device discarded from being trans...

Страница 100: ... In Discards 0 Out Discards 0 In Errors 0 Out Errors 0 In Unknown 0 Table 8 3 Task Actions Menu Sequence Enter Result 5 le 2 config 1 display 1 Bridge Number 0 3 Displays the current LEC configuration and status for the specified bridge Table 8 4 LEC Configuration and Status Information LECS Information Description ATM Address The ATM address of the LECS Config VCC VPI VCI values of the configurat...

Страница 101: ...PI VCI values of the multicast send VCC from the LEC to the BUS Multicast Forward VCC VPI VCI values of the multicast forward VCC from the BUS to the LEC Table 8 4 LEC Configuration and Status Information continued LECS via ILMI mode is Disabled LECS info ATM address not valid Config VCC VPI VCI not valid LES info ELAN name elan0_0 lec id 6 ATM address 4700000009000000000000000000c0da60000000 Cont...

Страница 102: ...LAN name For general information about LECs see LAN Emulation Overview on page 12 5 Example Enter 5 2 5 0 ELAN_0 The ELAN name for the LEC of bridge 0 is entered Table 8 5 Task Actions Menu Sequence Enter Result 5 le 2 config 4 cs addr 1 Bridge Number 0 3 2 LECS ATM address or Q ATM address Updates the specified LECS ATM address for specified bridge Q Invalidates the LECS ATM address Table 8 6 Tas...

Страница 103: ... on or off The change will take place after the next reset For general information about LECSs see LAN Emulation Overview on page 12 5 Example Enter 5 2 7 The option to obtain the LECS address via ILMI is toggled on or off Table 8 7 Task Actions Menu Sequence Enter Result 5 le 2 config 6 les addr 1 Bridge Number 0 3 2 LES ATM address or Q ATM address Update the specified LES ATM address for specif...

Страница 104: ...ation of that relationship Forward delay time The maximum time that an LEC will maintain an entry for a non local MAC address in its LE_ARP cache in the absence of a verification of that relationship as long as the topology change flag is true Expected LE_ARP Resp Time The maximum time that the LEC expects an LE_ARP request response cycle to take Used for retries and verifies Topology change flag ...

Страница 105: ...mer For more information see LEC Parameters on page 12 16 Control timeout Enter the bridge number and control timeout value to update the control timeout parameter in seconds Example Enter 5 3 2 0 100 Control Timeout 120 VCC Timeout 1200 Aging Time 300 Forward Delay Time 15 Expected LE ARP Resp Time 1 Topology change flag OFF Flush Timeout 4 Path Switching Delay 6 Connection Completion Timer 4 Tab...

Страница 106: ...EC aging time parameter Example Enter 5 3 4 0 250 The aging time parameter for the LEC of bridge 0 is updated to 250 seconds Table 8 12 Task Actions Menu Sequence Enter Result 5 le 3 operational 3 vcc 1 Bridge Number 0 3 2 VCC timeout period minutes The VCC timeout period parameter is updated for the specified bridge Minimum None specified Default 20 minutes Maximum Unlimited Table 8 13 Task Actio...

Страница 107: ... for the LEC of bridge 0 is updated to ON Expected LE_ARP response time Enter the bridge number and expected LE_ARP response time value to update the LEC expected LE_ARP response time parameter Table 8 14 Task Actions Menu Sequence Enter Result 5 le 3 operational 5 forward 1 Bridge Number 0 3 2 LEC forward delay time 4 30 The LEC forward delay time parameter is updated for the specified bridge Tab...

Страница 108: ...parameter Table 8 16 Task Actions Menu Sequence Enter Result 5 le 3 operational 7 arp 1 Bridge Number 0 3 2 LEC expected LE_ARP response time 1 30 The LEC expected LE_ARP response time parameter is updated for the specified bridge Table 8 17 Task Actions Menu Sequence Enter Result 5 le 3 operational 8 flush 1 Bridge Number 0 3 2 LEC flush timeout 1 4 The LEC flush timeout parameter is updated for ...

Страница 109: ...date the LEC connection completion timer parameter Example Enter 5 3 10 0 7 The connection completion timer parameter for the LEC of bridge 0 is updated to 7 seconds Table 8 19 Task Actions Menu Sequence Enter Result 5 le 3 operational 10 completion 1 Bridge Number 0 3 2 LEC connection completion timer 1 10 The LEC connection completion timer parameter is updated for the specified bridge abtthgde ...

Страница 110: ...gs Topology In Requests Number of topology change requests received by the LEC Flush In Requests Number of flush requests received by the LEC Config In Responses Number of configuration responses received by the LEC Join In Responses Number of join responses received by the LEC Register In Responses Number of register responses received by the LEC Unregister In Responses Number of unregister respo...

Страница 111: ...equests Number of negative LE_ARP requests sent by the LEC Topology Out Requests Number of topology change requests sent by the LEC Flush Out Requests Number of flush requests sent by the LEC Arp Out Responses Number of LE_ARP responses sent by the LEC Flush Out Responses Number of flush responses sent by the LEC Ready Query Out Ready Frames Number of READY_QUERY messages sent by the LEC Ready Ind...

Страница 112: ...24 Arp Eavesdrop 3 Flush 14 In Ready frames Ready Query 0 Ready Ind 1 In Errors Msg Error 0 Wrong Type 0 Not Ours 34 Not Learn 1 Out Requests Config 0 Join 1 Register 0 Unregister 0 Arp 37 Narp 0 Topology 0 Flush 14 Out Responses Arp 25 Flush 9 Out Ready frames Ready Query 0 Ready Ind 2 Out Errors Bad Status 0 Bad State 0 Gen Error 1 abtthgde book Page 16 Tuesday June 23 1998 10 29 AM ...

Страница 113: ...tion see Unknown Unicast Frames on page 12 15 Example Enter 5 6 0 N Table 8 22 Task Actions Menu Sequence Enter Result 5 le 5 reset Bridge Number 0 3 LEC control frame statistics are reset to zero for the selected bridge Table 8 23 Task Actions Menu Sequence Enter Result 5 le 6 flood 1 Bridge Number 0 3 2 Unicast flood mode Q N ot Flood Q Req Arp Q Res pArp Q N ot Flood No unicast frames are sent ...

Страница 114: ...G LAN EMULATION CLIENTS No unicast frames are sent to the BUS for the specified bridge and the following message is displayed The LE flood mode for Bridge 0 is now NotFlood abtthgde book Page 18 Tuesday June 23 1998 10 29 AM ...

Страница 115: ...nnected The IP address is used to identify the 7600 Card within the network The SNMP and TFTP use this address when connecting to the 7600 Card The Network Management Station NMS IP address is defined in the 7600 Card to enable the unit to send SNMP traps to the NMS The following management tasks are covered Manage IP parameters Q Display Current IP Configuration Q Update IP Address Q Update Defau...

Страница 116: ...rameter Description Bridge The number of the bridge virtual network IP addr The IP address of the bridge Subnet Mask The IP address bit mask of the subnet where the specified bridge is located Applying the subnet mask on the IP address depending on its class A B or C determines the IP address subnet address Def Gateway The IP address of the default gateway router connected to the specified bridge ...

Страница 117: ...Enter 7 1 5 0 100 0 2 88 The Default Gateway for bridge 0 is updated to 100 0 2 88 Table 9 3 Task Actions Menu Sequence Enter Result 7 management 1 ip 4 ip addr 1 Bridge Number 0 3 2 IP Address IP Address is updated for specified bridge Table 9 4 Task Actions Menu Sequence Enter Result 7 management 1 ip 5 gateway 1 Bridge Number 0 3 2 Default Gateway Default Gateway is updated for specified bridge...

Страница 118: ...s displayed as follows Table 9 5 Task Actions Menu Sequence Enter Result 7 management 1 ip 6 mask 1 Bridge Number 0 3 2 Subnet Mask Subnet Mask is updated for specified bridge Table 9 6 Task Actions Menu Sequence Enter Result 7 management 2 snmp 1 display None The SNMP configuration is displayed Table 9 7 SNMP Configuration Information Parameter Description Bridge The number of the bridge virtual ...

Страница 119: ...dress for receiving SNMP traps Example Enter 7 2 2 0 100 0 0 92 The IP address for bridge 0 is updated to 100 0 0 92 Bridge 0 Default NMS 100 0 0 92 Bridge 1 Default NMS 100 0 2 93 Table 9 8 Task Actions Menu Sequence Enter Result 7 management 2 snmp 2 nms addr 1 Bridge Number 0 3 2 IP address IP address is updated for specified bridge abtthgde book Page 5 Tuesday June 23 1998 10 29 AM ...

Страница 120: ...oftware from Network Q Erase Software from Flash Q Download Software from Local Q Display Hardware Configuration Update the system working mode and attributes Q Set System Configuration Mode Q Set Store and Forward Mode Manage timeout parameters Q Display Timeout Parameters Q Display Timeout Delays Q Update Hardware Timeout Delay Q Update Software Timeout Delay Manage flash memory Q Reset Flash Me...

Страница 121: ... software version revision number and date of implementation Example Enter 1 1 The current software version revision number and date of implementation are displayed as follows Software version Ver 3 17 Built Oct 22 1996 17 39 57 Table 10 1 Task Actions Menu Sequence Enter Result 1 system 1 display None The current software version revision number and date of implementation are displayed abtthgde b...

Страница 122: ...re via the network by TFTP Example Enter 1 9 2 100 0 0 24 applic swf System software is downloaded via tftp Table 10 2 Task Actions Menu Sequence Enter Result 1 system 9 load 1 display None Status of last TFTP software download is displayed Table 10 3 Task Actions Menu Sequence Enter Result 1 system 9 load 2 tftp 1 Server IP address 2 File to be downloaded System software is downloaded via tftp ab...

Страница 123: ...tion program for example PROCOMM Plus 2 Pull out the Switch Board from the CELLplex 7000 Switch and leave it out until the procedure is finished 3 Connect the terminal to the internal RS 232 connector located on the right side of the rear mounted daughter board 4 Reset the unit 5 Press Shift U The screen should read Monitor port LMA 6 Change Baud Rate to 57600 7 Press Enter and the prompt appears ...

Страница 124: ...it Display Hardware Configuration Hardware configuration information including a hardware diagnostic report is displayed showing the pass failed status of each hardware element within the 7600 Card Example Enter 1 2 The following is a sample hardware status report for one context Table 10 5 Task Actions Menu Sequence Enter Result 1 system 2 status None The hardware configuration and pass failed st...

Страница 125: ... 1 Installed FE Port 2 Installed FE Port 3 Installed FE Port 4 Installed Context 4 diagnostics report TRAM 256 K pass CRAM 1024 K pass SRAM 32 K pass FRAM 128 K pass ZipChip Diagnostic pass TM Register Diagnostics pass ZipChip Diagnostic pass SEEC Diagnostics pass Check cells chaining pass Interrupts diagnostics pass HW Diagnostics pass Table 10 6 Task Actions Menu Sequence Enter Result 1 system 3...

Страница 126: ...ATM ports This mode change takes effect only after the next reset Example Enter 1 3 6 The store and forward mode is set according to following prompt The current mode is displayed after the colon To accept it press enter to change it type over the new choice and press enter Select mode S F C utThru C Table 10 7 Task Actions Menu Sequence Enter Result 1 system 3 update 6 s f Enter S f or C utthru Q...

Страница 127: ...ts for Events Confirmed The number of software confirmed Ethernet segment timeouts Server Released The number of times the server released frames automatically without intervention by the hardware or software MACE Stucked The number of times timeouts were caused due to a heavy load on the physical line Queue invalid The number of times the frame came in on an invalid VC Wait for end SW TO The numb...

Страница 128: ...broadcasts from going to it due to a heavy load Enable SW bdcats The number of times the software opened to enable broadcasts to go to it Spare Cell Busy The number of times the previous timeout was not completed Spare Cell Busy SW The number of times the previous software timeout was not completed Number of items in output queues Lists each queue 12 Ethernet 1 ATM and 1 to the software and the nu...

Страница 129: ...events 0 64 0 0 0 0 0 0 0 0 Empty cell counter 3fe1 Full queues mask 0000 Disable SW bdcats 0000 Enable SW bdcats 0000 Single cell CPI 1 0000 Problems 0 Frames CPI 0 0 Frames CPI 0 SW 0 Invalid CPI 0 Invalid CPI SW 0 Invalid hptr 0 Invalid index 0 Spare Cell Busy 0 Spare Cell Busy SW 0 Spare Cell Fail 0 Spare Cell Fail SW 0 Number of items in output queues I I I I I I I I I 1 I 2 I 3 I 4 I 5 I 6 I...

Страница 130: ... the hardware timeout mechanism Example Enter 1 3 8 3 10 The hardware time delay parameter is updated to 10 seconds the following message is displayed Table 10 10 Task Actions Menu Sequence Enter Result 1 system 3 update 8 timeout 2 display None The software and hardware timeout delays are displayed Table 10 11 Task Actions Menu Sequence Enter Result 1 system 3 update 8 timeout 3 hardware Time del...

Страница 131: ...efault factory settings for the 7600 Card resets and reboots the device Example Enter 1 5 The flash memory is reset with the default factory settings and the device is reset and rebooted Table 10 12 Task Actions Menu Sequence Enter Result 1 system 3 update 8 timeout 4 software Time delay or 0 Q Time delay Software time delay parameter is updated Q 0 Software timeout mechanism is disabled Table 10 ...

Страница 132: ...cess password is updated Update Write access Password Update the write access password Type the new password a second time to confirm your entry Example Enter 1 6 2 The following dialog is displayed Note that the passwords themselves are not displayed Table 10 14 Task Actions Menu Sequence Enter Result 1 system 6 password 1 read 1 password 2 confirmation The read access password is updated Table 1...

Страница 133: ...e not displayed Enter the old admin password myadminpassw Enter the new admin password myadminpassw Enter the new admin password again myadminpassw The password has been changed The admin access password is updated Enable Disable Event Messages Enable or disable Administration Console event messages Each application of the command toggles enable disable If enabled event messages pop up on the Admi...

Страница 134: ...settings to take effect Example Enter 1 8 This will reset and reboot the device Are you sure Y N System hardware is reset and device is rebooted Table 10 17 Task Actions Menu Sequence Enter Result 1 system 7 event None Event messages are enabled disabled Table 10 18 Task Actions Menu Sequence Enter Result 1 system 8 reset None System hardware is reset and device is rebooted abtthgde book Page 15 T...

Страница 135: ...00 Card Chapter 12 ATM LAN Emulation and Virtual LANs Chapter 13 Traffic Management in the ATM Network Chapter 14 Device Management Chapter 15 System Modes Attributes and Tuning 7600 Card Capabilities abtthgde book Page 17 Tuesday June 23 1998 10 29 AM ...

Страница 136: ... and have equal access rights to transmit Collision Detection means that devices monitor the medium even while they are transmitting and so can detect a collision that is another station transmitting while they are transmitting The speed of transmission on an Ethernet LAN is normally 10 Mbps Stations on an Ethernet LAN can include computers workstations or terminals Ethernet LANs use a common bus ...

Страница 137: ...arge number of the same vendors In short 100BASE T provides a non disruptive smooth evolution from current 10BASE T Ethernet to high speed 100 Mbps performance The packet format packet length error control and management information in 100BASE T are practically identical to those in Ethernet To higher layers of software 100BASE T appears indistinguishable from regular Ethernet All the popular prot...

Страница 138: ...ually The auto negotiation capability is available for Tx ports copper only Full or Half Duplex Mode Fast Ethernet as implemented in the 7600 Card can communicate in either full or half duplex mode for both Tx and Fx port types The duplex auto negotiation capability is available for Tx ports only The Fx ports must be set manually to either full or half duplex When duplex auto negotiation is select...

Страница 139: ...r UTP 150 ohm shielded twisted pair STP and fiber These media specifications cover almost all cable types currently in use Equally important all supported media types can be mixed together and connected through a repeater or switch just as with the earlier Ethernet media types To support these various wiring types Fast Ethernet provides three transceiver types A transceiver is that portion of an a...

Страница 140: ...ayed When a port is disabled data is not received or transmitted through the port Monitoring Ports Each port is continuously monitored and the current operational status of the port operating or not operating can be displayed Statistics on traffic through the port are compiled and can be displayed at any time These include octets and frames unicast multicast and broadcast received and transmitted ...

Страница 141: ...LANs are assigned to bridges by associating physical port numbers to bridge port numbers when setting up the device Figure 11 4 below shows LANs connected to a bridge to form a bridged LAN environment Figure 11 3 Forming a bridged LAN environment Store and Forward The basic idea of the transparent bridge as specified in the IEEE 802 1d bridging standard is that it listens to every packet transmitt...

Страница 142: ...dynamic addresses Learning while forwarding The learning process is executed by the bridge at the same time that frame forwarding is occurring The strategy goes as follows 1 The bridge receives every packet transmitted by its attached LANs 2 For each packet received the bridge stores the address in the packet s source address field in the FDB together with the bridge port upon which the packet was...

Страница 143: ...ing time Allowed ports for static addresses Input and output bridge ports assigned allowed to a static address are entered or removed by the operator or are predefined Static addresses can be addresses of individual destination stations but they are more frequently multicast addresses addresses which include a group of destination stations A packet with a multicast address normally needs to be tra...

Страница 144: ...lves by means of special messages called Configuration Bridge Protocol Data Units CBPDUs continuously sent between them Using these messages the bridges inform the other bridges of their unique bridge ID and they calculate the shortest lowest cost path from themselves to other locally connected bridges Using this information the STP determines the following Root Bridge The root bridge is selected ...

Страница 145: ...ackets In the learning state a port learns station addresses but still does not forward data packets The management parameter forward delay controls the amount of time that a bridge port remains in the listening or the learning state Port States Summing up a bridge port can be in one of the following port states Q Listening When the Spanning Tree begins re configuring after a network change all po...

Страница 146: ...ich its Root Port is attached The recommended time is 2 secs Bridge max age The message age value at which a stored CBPDU is discarded The value recommended in 802 1d is 20 secs Bridge forward delay A parameter that prevents a bridge from forwarding data packets until the changes in the spanning tree have been completed throughout the network It is the time spent in the Listening State and the Lea...

Страница 147: ...nagement in the Fast Setup see Chapter 3 or in the Virtual LAN Configuration menu see Chapter 5 For management purposes the bridges are numbered from 0 to 3 in each one of the four contexts Figure 11 5 shows two local bridged LAN environments Engineering and Finance connected to bridges on a 7600 Card Figure 11 5 Bridged LAN environments connected to a 7600 Card Connection to the ATM Network In Ch...

Страница 148: ...a complete range of user traffic including voice video and data Defined by CCITT and ANSI standards it facilitates multi media networking between high speed devices at multi megabit speeds Using this connection oriented switched networking technology virtual channels may be set up to support multiple applications through the same physical connection The switching technology enables dedicated bandw...

Страница 149: ...ners and standardized labelling considerably ease and quicken processing Q The cell format also allows for multi protocol transmissions Since ATM is protocol transparent the various protocols can be transferred at the same time With ATM one line can carry phone fax video data and other information simultaneously This multiprotocol advantage also offers scalability greatly reducing the configuratio...

Страница 150: ...ing the signalling protocol to the ATM switch At connection time a VCC is established between the stations and a VCC identifier is assigned to the connection Virtual Path Connection In addition to the VCC another type of virtual connection called a virtual path connection VPC can exist on the same physical link The VPC is a higher level container connection which includes one or more VCCs A VCC is...

Страница 151: ...en management protocol that supports the bi directional exchange of management information between all end stations and the switches to which they are connected The ILMI functions for a UNI provide status configuration statistics and control information about link and physical layer parameters at the UNI In addition it provides for address registration across the UNI ILMI communications use SNMP d...

Страница 152: ...er as if they were operating over traditional LANs LE can be configured in a ATM network in several ways Q To connect legacy end stations directly to other legacy systems as well as to servers routers switches and other networking devices attached to the ATM network Q To connect bridged LAN environments to each other over ATM In this case the Emulated LAN acts as a bridge on the ATM network Q To c...

Страница 153: ...her level software which implements the LAN Emulation User to Network Interface LUNI LAN Emulation Server The LES is the central directory service of an emulated LAN to which a LEC can turn to look up the ATM address of another LEC The LES directory contains a table of LAN station MAC addresses together with the ATM addresses of the LECs that represent them In order to transmit a data frame to a p...

Страница 154: ...ons Emulated LAN components communicate with each other by means of VCCs Control signals and data transmissions are handled by separate VCCs Control VCCs and Data VCCs Control VCCs The control VCCs carry control traffic such as LE_ARP requests and responses On initialization control VCCs are established between LEC and LES bi directional control direct VCC and control distribute VCC as well as a b...

Страница 155: ...icast data VCC pair multicast send and multicast forward are established between a LEC and the BUS in order to allow the LEC to send and receive multicast data In addition initial unicast data data whose LEC destination has not yet been ascertained by the transmitting LEC is sent on the multicast send VCC to the BUS which forwards it to all other LECs in the same ELAN Characteristics of the data V...

Страница 156: ...d via ILMI or alternatively retrieved from flash manually assigned If the address is not available by these methods the well known address is used to open a configuration VCC The well known address is displayed in this case Config VCC VPI VCI values of the configuration VCC to the LECS It is an VCC which is determined during initialization of the LEC using the above LECS ATM address LES Informatio...

Страница 157: ...o the ATM port is specified when the bridge is set up If no ATM connection is specified the bridge acts like a standard transparent bridge ATM Address ATM address of the LES provided by the LECS during the configuration phase or manually assigned using the LES address option of the LE configuration menu or in Fast Setup Control direct VCC VPI VCI values of the control direct VCC originated by the ...

Страница 158: ... ZipChip Using a technique called cell switching all data is converted to standard sized cells The ZipChip s local memory is optimized for storing these data cells The data in the memory is either converted to Ethernet frames when transmitted on the Ethernet port or to ATM LAN Emulation frames when transmitted on a VCC The cell data need never be copied as it is merely converted to the appropriate...

Страница 159: ...e is populated as in a standard bridge see Forwarding Database on page 11 7 The ARP cache is populated by the following methods Q Address resolution querying the LES Q Address learning from received data packets Address Resolution When the bridge needs to forward a unicast data frame whose destination MAC address is not found in its FDB it attempts to locate a LEC that represents the destination M...

Страница 160: ...C on which it was received Then the next time a data frame needs to be sent to that MAC address the bridge picks up its VCC from the FDB ARP cache LES Address Registration in the 7600 Card To populate the LES directory LECs are normally required to register the MAC addresses of LAN stations they represent with the LES However the situation is different for LAN stations which reside on a transparen...

Страница 161: ...ess is found on a remote LEC the frame is converted to the standard LAN Emulation format and sent on to the ATM 4 If the destination address is defined as self this signifies SNMP CBPDU frames or any other traffic directed to the bridge software 5 If the destination address is unknown the frame is sent to all local bridge ports In addition it is sent to all other members of the ELAN according to t...

Страница 162: ...o ensure that the frame is received at its destination Q Address resolution can be performed continuously on the unknown address until the address becomes known and a VCC can be set up Unknown unicast flooding mode The 7600 Card allows these two actions to be performed in combination according to management selection The unknown unicast flooding mode allows the user to specify one of the following...

Страница 163: ...will also be able to receive flooded unicast frames and broadcast and multicast frames on the multicast forward VCC from the BUS Control Information on Data VCs In addition the LE implementation of the 7600 Card complies with the standard and requires that control information be carried in band on data VCs Flush Ready frames and be identified by a special frame header LECID field The 7600 Card can...

Страница 164: ...econd 30 seconds Topology change flag Boolean indication that the LEC is using the Forward delay time instead of Aging time to age non local entries in its LE_ARP cache N A N A N A Flush timeout Time limit to wait to receive a LE_FLUSH response after the request has been sent before taking recovery action 1 second 4 seconds 4 seconds Path switching delay The time since sending a frame to the BUS a...

Страница 165: ...hernet segments on the ATM network into a common high bandwidth broadcast domain A vAN is defined simply as an Emulated LAN together with all segments attached to it and the stations connected to these segments Multiple vLANs can operate independently on a single ATM network each vLAN corresponds to a distinct ELAN Connecting Local Segments to a vLAN A vLAN will usually contain some Ethernet segme...

Страница 166: ...hows how two such vLANs for example Engineering and Finance might be connected on the ATM network Each vLAN has a separate ELAN ELAN 1 and ELAN 2 which establish the data direct VCCs on which members of the vLAN communicate Figure 12 5 shows how an ELAN is embedded in a vLAN abtthgde book Page 19 Tuesday June 23 1998 10 29 AM ...

Страница 167: ...ND VIRTUAL LANS Figure 12 4 vLAN Connectivity through 7600 Cards The following figure shows a different way of viewing the relation between ELAN and vLAN The ELAN is embedded in the vLAN abtthgde book Page 20 Tuesday June 23 1998 10 29 AM ...

Страница 168: ...ance groups are separated physically though they are closely related in terms of the work that they do and how they use the network The physical wiring does not reflect these logical relationships The virtual view shows how LAN Emulation can be used to create three virtual workgroups each of them managed as if its members were linked locally The LAN Emulation servers which may reside in a switch o...

Страница 169: ...12 22 CHAPTER 12 ATM LAN EMULATION AND VIRTUAL LANS Figure 12 6 Logical and Physical View of a Network With vLANs abtthgde book Page 22 Tuesday June 23 1998 10 29 AM ...

Страница 170: ...n the ATM network to protect the network and the end system from congestion in order to achieve network performance objectives An additional role is to promote the efficient use of network resources TM allows the devices to transmit over a broader bandwidth for longer periods of time making the network more efficient Service categories The 7600 Card s ATM data transmission Traffic Management is ba...

Страница 171: ...and a destination For the sake of simplicity only the information flow from the source to the destination with its associated RM cell flows is considered The forward direction is the direction from the source to the destination and the backward direction is the direction from the destination to the source Figure 13 1 shows the data flow and the RM cell flow over a VCC connection between the two st...

Страница 172: ...ll rate of the connection during congestion or impending congestion A network element that is not in a congested state or an impending congested state will not modify the value of this indication An impending congested state is the state when a network element is operating around its engineered capacity level Cell Loss Priority For some service categories the end system may generate traffic flows ...

Страница 173: ...tilization Traffic and Congestion Control Functions The following describes the available traffic and congestion control functions Q Network resource management may be carried out by using virtual paths Virtual path connections may be used to separate traffic thereby preventing statistical multiplexing with other types of traffic The CBR and VBR quality of service classes make use of network resou...

Страница 174: ...tains an ASIC and local memory for traffic management tables It performs processing on ATM cells emerging from or received by the ZipChip This provides traffic rate shaping additional statistics and flexibility in ATM network configuration The 7600 Card checks connected devices for Traffic Management modules and only activates its own TM module if a corresponding one is found in the connected devi...

Страница 175: ...ple VCs the maximum rate is set to one half the full rate Static and Dynamic TM In the 7600 Card there are two types of Traffic Management static and dynamic The static TM is essentially the dual rate mechanism described in the previous section The dynamic TM is the ABR feedback system described in the previous sections The dynamic TM can be enabled and disabled by the LMA commands When the dynami...

Страница 176: ...nagement is performed as follows 1 A forward RM cell is sent at regular intervals on each VC from the source end station 2 The EFCI bit is set in data cells by the ATM switch when congestion is found along the VC path 3 The destination end station recognizes the EFCI bit and the backward RM cell congestion indicator bit is set 4 The backward RM cell is returned to the source end station through th...

Страница 177: ...aces and Protocols The following applications provide user interfaces to the 7600 Card Q 7600 Card administration console Local Management LM Q External SNMP based network management applications such as Transcend Manager The 7600 Card uses virtual terminal protocols such as rlogin and Telnet in addition to the LM to run the system administration console and SNMP to run the SNMP based management a...

Страница 178: ...nd using virtual terminal protocols or SNMP network manager protocol Each SNMP network manager has its own user interface to the management facilities Q Out of band by connecting a VT100 terminal or a PC with terminal emulation software to the serial port on the CELLplex 7000 unit in which the 7600 Card is installed The VT100 management interface which is a menu driven user interface built into th...

Страница 179: ...ol SNMP and Virtual terminal protocols Local Management LM The Local Management LM is a character oriented menu driven user interface for performing system level administration The 7600 Card s Local Management is performed through the serial connection in the host CELLplex 7000 unit The management of all 7600 Cards is supported by the Local Management regardless of virtual LAN membership The Local...

Страница 180: ...mats messages and transmits information between reporting devices and data collection programs It runs on top of the User Datagram Protocol UDP offering a connectionless mode service This allows SNMP to pass management information before a session is established The 7600 Card can be managed through SNMP based external network management applications running on a workstation Transcend Enterprise Ma...

Страница 181: ...are set any SNMP based network manager can manage the unit provided the Management Information Base MIB is installed correctly at the management station SNMP Agents The SNMP agent of the 7600 Card responds to SNMP requests from an external SNMP manager Each 7600 Card has one SNMP agent which monitors objects on the system and reports data to the Administration Console or a network management syste...

Страница 182: ...e MIBs supported by the 7600 Card can be accessed These MIBs are collections of related managed objects abstract representations of resources that are capable of being managed Some examples of these resources are error counters ports and network policies The 7600 Card supports the following SNMP MIBs Q MIB 2 Q Bridge MIB Q AToM MIB Q LE Client MIB Q RMON MIB Q Interface Evolution MIB Q NCDCHASS MI...

Страница 183: ...ement security is provided through passwords Three user access levels exist read write admin Virtual Terminal Protocols A virtual terminal protocol is a software program such as Rlogin or Telnet that allows establishment of a management session from a PC or a workstation Since rlogin and Telnet run over TCP IP at least one IP address must be configured on the 7600 Card to access it with a virtual ...

Страница 184: ...14 8 CHAPTER 14 DEVICE MANAGEMENT Figure 14 5 Local Management Protocol Access abtthgde book Page 8 Tuesday June 23 1998 10 29 AM ...

Страница 185: ...ir destination addresses This common format of frames in CRAM makes switching straightforward CRAM under control of ZipChip is optimized for storing data cells Each frame is organized as a linked list of cells The cells in the CRAM are either converted back to Ethernet frames when transmitted on an Ethernet port or to LAN Emulation frames when transmitted on the ATM port In this scheme cell data i...

Страница 186: ...Forward Mode Timeout Tuning Timeout tuning is used for assigning timeout delays for both hardware and software These parameters are used to avoid cells being stuck in the 7600 Card for extended periods of time This usually occurs when the frame was not assembled correctly and is too long or the last cell of the frame was not received from the ATM ports The timeout mechanism only applies to frames ...

Страница 187: ...3 Console Passwords The Administration Console requires passwords at the various access levels read write and admin Admin access is required to change any of the passwords abtthgde book Page 3 Tuesday June 23 1998 10 29 AM ...

Страница 188: ...rs for all 3Com products as well as technical articles This service is available via modem seven days a week 24 hours a day To reach the service set your modem to 8 data bits no parity and 1 stop bit For the telephone number nearest you see Table A 1 Table A 1 Bulletin Board Service Country Baud Rate Telephone Number Australia up to 14400 baud 61 2 955 2073 France up to 14400 baud 33 1 69 86 69 54...

Страница 189: ... access CardFacts for adapter information or NetFacts for network system product information Q CardFacts provides adapter installation diagrams configuration drawings troubleshooting instruction and technical articles Document 9999 provides you with an index of adapter documents Q NetFacts provides data sheets and technical articles on 3Com Corporation s hub bridge router terminal server and softw...

Страница 190: ...ing and support services When you contact your network supplier for assistance have the following information ready Q Diagnostic error messages Q A list of system hardware and software including revision levels Q Details about recent configuration changes if applicable Table A 3 Telephone Support Country Telephone Number Country Telephone Number Australia Sydney 61 2 959 3020 Mexico 525 531 0591 M...

Страница 191: ...ntries Table A 4 Network Supplier Support Country Baud Rate Telephone Number Taiwan up to 14400 baud 886 2 377 5838 886 2 377 5840 U K up to 14400 baud 44 1442 278278 U S up to 14400 baud 1 408 980 8204 Table A 5 Obtaining an RMA Number Country Telephone Number Fax Number U S and Canada 800 876 3266 option 2 408 764 7120 Europe 44 1442 278000 44 1442 236824 Outside Europe U S and Canada 1 408 492 ...

Страница 192: ...etoreadthroughthereleasenotes Terminal Does Not Show Anything If the control terminal is physically connected to the module but does not load the Administration Console Menus verify that your terminal setup matches the specifications in the Connecting to the Control Terminal section in Chapter 1 Also make sure your cable is configured as DTE ACT LED Not Blinking When the CELLplex 7000 is activated...

Страница 193: ...formance of that port indicated by an increase in the physical layer statistics count for that port To prevent dust from collecting on the fiber optic lens keep the dust covers on the ports at all times when they are not in use To clean a fiber optic lens follow the procedure below 1 Remove any accumulated dust or debris from the port or connector by blowing off all surfaces with a canned air dust...

Страница 194: ...all unused ports covered Ne toucher aucune surface après le nettoyage des connecteurs et garder les pièces inutilisées couvertes Vermeiden Sie das Berühren aller Oberflächen nach dem Säubern der Kontakte und verdecken Sie alle nicht benutzten Öffnungen abtthgde book Page 3 Tuesday June 23 1998 10 29 AM ...

Страница 195: ...uto sensing full duplex half duplex Q Software selectable cut through or store and forward mode Q Auto sensing 10 100 Mbps Q Rate based flow control Q Full rate multicast support Q Address table capacity of up to 32k entries Q Full rate forward filter Q IEEE 802 1D Spanning Tree protocol STP support Q Virtual LAN support Height 1 in 4 5 cm Width 17 in 39 5 cm Depth 11 in 23 5 cm Weight 3 3 lb 1 5 ...

Страница 196: ...4 F 0 to 40 C Q Operating Humidity 10 to 90 non condensing Q Storage Temperature 4 to 167 F 20 to 75 C Q Storage Humidity 10 to 95 non condensing Indicators Q Fast Ethernet Ports per port link status and transmit Q UnitPower fail activity Management Q In band SNMP over Ethernet Q Local Management via CELLplex management Q ILMI and OAM support Q MIBs supported Q MIB 2 Q Bridge MIB Q AToM MIB Q LE C...

Страница 197: ...sions Agency Certifications Q Meets FCC part 15 Subparagraph B Class A limits and CISPR 22 Class A limits Q Directive complied with EMC 89 336 EEC as amended by 92 31 EEC and 93 68 EEC Emission EN50081 1 EN55022 Class A Immunity EM50082 1 IEC801 2 3 4 Communications Protocols RFC 826 ARP RFC 791 IP RFC 792 ICMP RFC 768 UDP RFC 793 TCP Management Protocols RFC 1157 SNMP RFC 1213 MIB2 RFC 1212 Conci...

Страница 198: ...id typing in the ATM address 20 octets long AU ID Unique number assigned to the 7600 Card May be found through the Administration Console Menus of the LinkSwitch backbone The main segment of a campus network to which are attached department networks or ribs Broadcast and Unknown Server BUS The Broadcast and Unknown Server handles data sent by a LEC to the broadcast MAC address all multicast traffi...

Страница 199: ...nection oriented communications A form of packet switching that requires a predefined circuit from source to destination to be established before data can be transferred Data Communications Equipment DCE The equipment providing functions that establish maintain and terminate a data transmission connection Data Terminal Equipment DTE The equipment connected to the common carrier communications faci...

Страница 200: ...e LAN Emulation Client is the entity in end systems which performs data forwarding address resolution and other control functions LAN Emulation Configuration Server LECS Assigns individual LECs to different Emulated LANs The LECS allows the LEC to automatically configure LAN Emulation Server Implements the control coordination function for the Emulated LAN In addition it provides a facility for re...

Страница 201: ...forwards information between the networks based on layer 3 protocols RJ 21port 50 pin Telco connector on 7400 Interface Card that supports 12 10BaseT ports for high density connections server A computer that provides clients with application and network services Servers are shared by multiple users Simple Network Management Protocol SNMP A protocol originally designed to be used in managing TCP IP...

Страница 202: ...r Network Interface UNI The UNI interconnects an ATM user with an ATM switch Wide Area Network WAN Data communications network spanning very large geographical areas abtthgde book Page 5 Tuesday June 23 1998 10 29 AM ...

Страница 203: ... basic concepts 12 2 cell switching 12 2 fixed length cell 12 2 ILMI MIB 12 4 internal connection 5 2 protocol stack layer 12 2 ATM Adaptation Layer see AAL ATM address BUS 8 5 12 10 LECS 8 4 8 6 12 9 LES 8 4 8 5 12 10 ATM port administrative status 7 2 enable administrative status 7 9 octets 7 2 operational status 7 2 statistics 7 2 7 3 unicast 7 2 Auto sensing 1 4 B blocking static address on po...

Страница 204: ... Client 3 8 LE parameters 3 7 LECS address 3 7 management 3 10 network prefix 3 6 UNI NNI parameters 3 7 Virtual LAN 3 8 3 10 connecting local management terminal 2 6 network devices 2 5 connection RS 232 2 6 via the CELLplex 7000 switch 2 6 connection status 2 9 connector SC 2 5 STP 2 5 console event messages disabling 10 14 console password 15 3 context 3 10 4 3 changing 4 3 control direct VCC L...

Страница 205: ...ckbone 1 5 Fast Ethernet port 10 100 Mbps transmission speed 11 3 administrative status 6 3 assigned to Bridge 5 2 attaching to Bridge 5 2 attributes and statistics 6 2 auto negotiation 11 2 autonegotiation 6 7 broadcast frames 6 3 capabilities 11 2 configuration 1 1 context 3 10 4 3 disabling 6 5 11 5 discarded frames 6 3 duplex mode 6 7 errored frames 6 3 full half duplex transmission mode 11 2 ...

Страница 206: ... 12 14 LE_ARP response 12 12 LE_ARP see LAN Emulation Address Resolution Protocol learning addresses 12 13 learning station addresses 11 7 LEC 12 6 aging time 8 8 12 17 broadcast frames 8 2 configuration and status 8 4 12 9 connection state 8 2 control frame statistics 8 14 control time out 12 16 control frame statistics 8 14 discards 8 3 errored frames 8 3 forward delay time 8 8 ID 8 4 multicast ...

Страница 207: ...ATM port 7 2 On Line Technical Services A 1 3Com Bulletin Board Service A 1 3ComFacts Automated Fax Service A 2 Ask3Com on CompuServe A 2 operating humidity C 2 operating temperature C 2 operational status ATM port 7 2 port 6 3 out of band management 14 2 P Packet status 2 9 password admin access 10 14 read access 10 13 write access 10 13 passwords 14 7 15 3 Permanent Virtual Channels see PVC phys...

Страница 208: ...ty standards C 3 standards compliance C 3 standards compliance C 3 static addresses 11 8 permanency 11 8 statistics ATM port 7 2 7 3 Bridge 6 8 Fast Ethernet port 6 2 frame traffic on Bridge port 6 10 LEC 8 2 LEC control frame 8 14 link and physical layer parameters at UNI 12 4 reset LEC control frame 8 17 traffic rate 13 5 status Forwarding database 6 12 storage humidity C 2 storage temperature C...

Страница 209: ...ridge ATM address 7 4 Bridge connection completion timer 8 13 Bridge forward delay time 8 11 Bridge LE ARP response time 8 11 Bridge path switching delay 8 12 Bridge topology change flag 8 11 Bridge aging time 6 10 broadcast threshhold 6 6 control time out 8 9 default gateway 9 3 ELAN name 8 6 Fast Ethernet port attributes 6 7 hardware time out delay 10 11 IP Address for Bridge 9 2 LEC aging time ...

Страница 210: ...17 Virtual LANS see vLANs Virtual Path Connection see VPC Virtual Path Identifier see VPI 12 3 virtual terminal protocols 14 1 14 7 VPC 12 3 Z ZipChip ASIC 7600 Card 12 11 abtthgde book Page 8 Tuesday June 23 1998 10 29 AM ...

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