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Safety

This product complies with IBM and international safety standards.

See the

IBM 8285 Nways ATM Workgroup Switch: Safety and Service Catalog, SA33-0398 for the

translations of the DANGER and CAUTION notices concerning this product.

Laser Standards

The laser is a Class 1 Laser Product and complies with the following safety standards:

IEC 825-1: 1993

EN 60825-1: 1993

IEC 825-2: 1993

EN 60825-2: 1993

IEC 950: 1991 + Amdt 1: 1992 + Amdt 2: 1993
EN 60950: 1992 + Amdt 1: 1992 + Amdt 2: 1993

The compliance label on the 155Mbps ATM I/O Card is shown in Figure 1.

CLASS 1 LASER PRODUCT - LUOKAN 1 LASERLAITE
APPAREIL A LASER DE CLASSE 1 - LASER KLASSE 1

Figure 1. Class 1 Laser Label

Notices

xix

Summary of Contents for 8285 Nways

Page 1: ...IBM 8285 Nways ATM Workgroup Switch IBM Installation and User s Guide SA33 0381 01...

Page 2: ......

Page 3: ...IBM 8285 Nways ATM Workgroup Switch IBM Installation and User s Guide SA33 0381 01...

Page 4: ...cation If the form has been removed address your comments to IBM France Centre d Etudes et Recherches Service 0798 BP 79 06610 La Gaude France FAX 33 93 24 77 97 E mail FRIBMQF5 at IBMMAIL IBM Interna...

Page 5: ...xiv Network Operations Productivity xxiv Conventions Used in This Guide xxv Part 1 Introduction 1 Chapter 1 Introduction to the IBM 8285 Nways ATM Workgroup Switch 3 ATM Workgroup Switch Components 3...

Page 6: ...ork 29 Overview 29 ATM Campus Network Components 30 Network Interfaces 32 Connecting ATM Devices to Form a Network 33 Linking User Devices UNI Interface 33 Linking Subsystems to Form a Cluster SSI Int...

Page 7: ...rkgroup Switch Commands 74 Keyboard Functions 74 Getting Help 75 Command Completion 76 Setting Up a Configuration Console in Normal ASCII Mode 77 Setting Up a Configuration Console in SLIP Mode 78 Ret...

Page 8: ...ARP Server 105 Chapter 14 Configuring LAN Emulation Parameters 107 Procedure 107 Setting Up LAN Emulation Servers 108 Starting a LES 108 Stopping a LES 109 Displaying the LECs Connected to a LES 110 S...

Page 9: ...al 155Mbps ATM I O Card Port 135 Via Building Wiring 135 Direct Cabling 135 Part 5 Management Code Updates and Troubleshooting 137 Chapter 19 Network and Switch Management 139 Managing the ATM Subsyst...

Page 10: ...Workgroup Switch Trap Messages 181 Part 6 Appendixes 183 Appendix A Specifications 185 Environmental 185 Mechanical 185 Power Source 186 Regulatory Compliance 187 Safety 187 Emission 187 Appendix B C...

Page 11: ...pe 204 Optical Power Loss Through Patch Panels 205 Optical Power Loss Through Jumper Cables 206 Appendix C Error and Information Codes 207 Q 2931 Error Codes for Clear Causes 207 Maintenance Codes 209...

Page 12: ...x IBM 8285 Nways ATM Workgroup Switch Installation and User s Guide...

Page 13: ...nks 42 22 PVC Workaround for Early Hub Versions 43 23 Contents of the ATM Workgroup Switch Shipping Group 47 24 Rack Mounting the Base Unit 50 25 Attaching the Mounting Brackets for Surface Mounting 5...

Page 14: ...46 NSAP Address Formats Supported in the Workgroup Switch ATM Subsystem 211 xii IBM 8285 Nways ATM Workgroup Switch Installation and User s Guide...

Page 15: ...193 10 Pin Signal Assignments for RS 232 Console Connector 195 11 Optical Power Budget for workgroup switch 155Mbps Port to Device Connections ATM Forum V3 1 201 12 Optical Power Budget for workgroup...

Page 16: ...xiv IBM 8285 Nways ATM Workgroup Switch Installation and User s Guide...

Page 17: ...s or pending patent applications covering subject matter in this document The furnishing of this document does not give you any license to these patents You can send license inquiries in writing to th...

Page 18: ...ons of the following industry standards as understood and interpreted by IBM as of September 1994 RFC854 TELNET protocol RFC1350 Trivial File Transfer Protocol TFTP RFC1577 Classical IP and ARP Addres...

Page 19: ...rea is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense Properly shielded and grounded cables and connectors must be used in...

Page 20: ...for business purpose with regard to electromagnetic interference If you find this is not suitable for your use you may exchange it for a non business one New Zealand Radiocommunications Radio Regulat...

Page 21: ...aser Standards The laser is a Class 1 Laser Product and complies with the following safety standards IEC 825 1 1993 EN 60825 1 1993 IEC 825 2 1993 EN 60825 2 1993 IEC 950 1991 Amdt 1 1992 Amdt 2 1993...

Page 22: ...xx IBM 8285 Nways ATM Workgroup Switch Installation and User s Guide...

Page 23: ...he ATM Workgroup Switch and its main functions It also presents examples of how to use the workgroup switch in various network configurations Chapter 2 Installing the IBM 8285 Nways ATM Workgroup Swit...

Page 24: ...on settings Part 4 Device Attachment Procedures Chapter 17 Attaching 25 6Mbps Devices to the ATM Workgroup Switch describes how to attach 25 6Mbps devices to ports on the Base Unit or on ATM media mod...

Page 25: ...presented in this guide and to use the ATM Workgroup Switch more effectively refer to the supplementary documents listed in Bibliography on page 225 Prerequisite Knowledge To understand the informati...

Page 26: ...n of management modules fewer planning considerations are required when ordering new media and interconnect modules Asset Protection The automatic distribution of the latest code versions ensures that...

Page 27: ...rm This is known as a hot swap Document titles Refer to the ATM User Network Interface Specification Version 3 1 for more information Monospace Command syntax parameters and variables SET PORT slot po...

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Page 29: ...ions 16 Security Controls 19 Chapter 2 Installing the IBM 8285 Nways ATM Workgroup Switch 21 Before You Start 21 Procedure 1 Mounting the ATM Workgroup Switch Components 22 Procedure 2 Configuring the...

Page 30: ...2 IBM 8285 Nways ATM Workgroup Switch Installation and User s Guide...

Page 31: ...ained ATM Switch and Control Point unit with 12 ATM ports 25 6Mbps and a slot for one of the optional 155Mbps ATM I O Card features Multimode Fibre FC 5500 or Single Mode Fibre FC 5501 The I O card ca...

Page 32: ...e cable Modules installed in the Expansion Unit form an integral part of the ATM Workgroup Switch The slots are interconnected by the same type of ATM backplane found in the 8260 hub and ports on ATM...

Page 33: ...6Mbps ATM Ports and their LEDs 25 6Mbps ATM Ports and their LEDs AC Power Input Status LEDS Reset Button Console Port Expansion Unit Connector Advanced Diagnostics Connector Optional 155Mbps Feature I...

Page 34: ...port feature port 13 connects to a 155Mbps ATM device such as a local server or an 8260 hub Two features are currently offered FC 5500 155Mbps Multimode Fiber I O Port with SC connector FC 5501 155Mb...

Page 35: ...hown in figures 4 5 and 6 Base Unit Status LEDs Figure 4 Status LEDs for the ATM Workgroup Switch 25 6Mbps Port LEDs Figure 5 LEDs for 25 6Mbps ATM Ports 155Mbps Port LEDs Figure 6 LEDs for the 155Mbp...

Page 36: ...configuration of the workgroup switch It may also be used to attach a modem to the workgroup switch Expansion Connector This connector attaches to an optional ATM Workgroup Switch Expansion Unit avail...

Page 37: ...dules are located on the front panel of the Expansion Unit as shown in Figure 7 ATM Media Modules Dummy Module AC Power Input Status LEDs Base Unit Connector IBM Figure 7 Front Panel of the ATM Workgr...

Page 38: ...re shown in figure 8 Figure 8 Status LEDs for the Expansion Unit Connectors and Controls on the Expansion Unit The ATM Workgroup Switch Expansion Unit has two connectors on its front panel Power Input...

Page 39: ...specifications Switch to switch interface SSI based on an extension of the ATM Forum UNI V3 1 as stated in the ATM Forum P NNI framework Topology services and route computation based on TRS with auto...

Page 40: ...p Switch and implements the ATM MIB defined in the V3 1 UNI Specification of the ATM Forum The AToMIB is defined by the IETF and by the IBM extensions It can be driven by SNMP managers such as IBM Net...

Page 41: ...dth RB and Unspecified Bit Rate UBR Table 1 ATM Connections Supported in ATM Workgroup Switches Type of Virtual Connection Connection Type Connection Class Connection Mode Virtual Path Connection VP P...

Page 42: ...to two separate emulated LANs simultaneously of the same or different LAN types 802 3 LAN types for the LEC Both UNI 3 0 and 3 1 LECs concurrently Up to 128 LECs combined total LES addresses that are...

Page 43: ...vides control and address resolution functions Broadcast and Unknown Server BUS The BUS provides broadcast and multicast functions No separate configuration commands are required to start the BUS as i...

Page 44: ...itch The following sections illustrate these configurations Notice however that the ATM Workgroup Switch can be used in any combination with other ATM switches such as other ATM Workgroup Switches or...

Page 45: ...gured with Client workstations connected to the 25 6Mbps ATM ports The server connected to the 155Mbps ATM I O Card interface Figure 10 ATM Workgroup Switch in Client Server Configuration Chapter 1 In...

Page 46: ...building Multiple 155Mbps uplinks can be used to connect the workgroup switch to the main backbone for added reliability and increased bandwidth In addition the workgroup switch provides switching bet...

Page 47: ...uration settings ATM Port Security The ports of the ATM Workgroup Switch are disconnected the first time you install it and they must be enabled before they can carry ATM traffic This is an additional...

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Page 49: ...group Switch components you need the following items Rack Mounting If the unit will be mounted in a rack you need A rack inventory chart and a cabling chart from your network administrator Four screws...

Page 50: ...I O Card on page 53 3 Mount the optional Expansion Unit feature by following the instructions in Chapter 6 Mounting the Expansion Unit on page 59 4 Mount ATM media modules in the optional Expansion Un...

Page 51: ...here 4 Check that the Port LEDs on the optional 155Mbps ATM I O Card are lit as shown here 5 Check that the Port LEDs on Expansion Unit modules are lit correctly as described in the documentation for...

Page 52: ...ia Modules on page 93 4 If the workgroup switch will form part of an ATM Campus Network configure the trunks to the other switches and PVCs as described in Chapter 12 Configuring Trunk Connections on...

Page 53: ...he ports show a status other than UP NO ACTIVITY follow the troubleshooting procedures in Chapter 21 Troubleshooting on page 149 Do not start the next procedure until all ports show the correct status...

Page 54: ...ctors and part numbers see Appendix B Cables Pins and Connectors on page 189 3 If you have the optional 155Mbps ATM I O Card attach a 155Mbps device by following the instructions under Chapter 18 Atta...

Page 55: ...attached device is not powered on the expected pattern is Port Enable LED green BLINKING Output Activity LED yellow OFF If a port is not enabled the expected pattern is Port Enable LED green OFF Outp...

Page 56: ...l port LEDs are correctly lit proceed to Part 2 Check Status of Ports Part 2 Check Status of Ports 1 Enter the SHOW MODULE ALL command All ports should show a status of OKAY Incorrect If any ports do...

Page 57: ...ments of an ATM address Overview The purpose of an ATM network is to set up connections via one or more ATM subsystems between two ATM user devices ATM subsystems can be interconnected to build a loca...

Page 58: ...e ATM subnetworks interconnected using NNI interfaces This set of subnetworks is controlled by one administrative domain and a single private owner using one network access protocol UNI An ATM campus...

Page 59: ...he same for all subsystems in a cluster plus A 1 byte Hub Number HN unique within the ATM Cluster which ranges from 0 to 255 ATM User Device An end system that encapsulates data into ATM cells and for...

Page 60: ...without the need of operator intervention such as routing node failure and node recovery backup and topology management by the Topology Routing Service TRS program You can define multiple SSI connecti...

Page 61: ...ions to User Devices UNI Guidelines for Configuring UNI Ports on the ATM Workgroup Switch Both PVCs and SVCs can be defined on the same physical port For SVCs the connection identifiers VPI VCI have V...

Page 62: ...and Expansion Unit is 212Mbps The total Reserved Bandwidth of the Base Unit and Expansion Unit for class A PVCs and NNI ports for example cannot exceed 180Mbps See also General Guidelines for Configu...

Page 63: ...y be defined between switches as shown in Figure 16 Figure 16 Parallel Trunk Links Note The bandwidth provided by parallel links between switches cannot be shared that is two parallel links between 25...

Page 64: ...th Identifier VPI number ATM cluster number ACN for the remote boundary switch Bandwidth available on the virtual path Signalling role for Q 2931 protocol You can configure multiple logical links over...

Page 65: ...all other ports See also General Guidelines for Configuring Trunks on page 44 for further information Adjacent Clusters Due to the lack of dynamic routing on NNI links all clusters within the same su...

Page 66: ...tch Configure a logical link to the local ACN associated with the remote switch using SET LOGICAL_LINK You can configure multiple logical links over the same physical port However you can only configu...

Page 67: ...igure a connection between two ATM user devices attached to different subnetworks Figure 20 shows the trunks that must be configured to allow Workstation Kouros and Workstation Sphinx to communicate F...

Page 68: ...LOGICAL_LINK command using the same dummy ACN 33 The ATM address of Workstation Kouros is known in cluster C by the updates received at each ATM switch by the Topology Routing Service TRS From Kouros...

Page 69: ...you must define The hub number HN of the remote switch The ports that form the local and remote end points A unique PVC identifier The type of PVC path or channel The bandwidth allocation algorithm be...

Page 70: ...NNI link between clusters Set up the two PVCs within the clusters that will be joined by the NNI link Join both PVCs by fibre or cable as shown in Figure 21 Configure the two boundary ports with the s...

Page 71: ...version 2 1 0 To set up a PVC to an 8260 hub with a CPSW earlier than version 2 1 0 you must Define one PVC among the pre v 2 1 0 switches only Define one PVC among the later version switches Join the...

Page 72: ...ection The following rules apply The switch has 2048 control blocks 2 control blocks are required per PtP connection up to 1024 PtP connections 1 control block is required per branch of a PtM connecti...

Page 73: ...Unpacking the I O Card 53 Mounting Procedure 55 Chapter 6 Mounting the Expansion Unit 59 Contents of the Expansion Unit Shipping Group 59 Rack or Surface Mounting 60 Chapter 7 Mounting ATM Media Modu...

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Page 75: ...3 for DANGER and CAUTION notices that concern this product and their translations Contents of the Base Unit Shipping Group Figure 23 illustrates the contents of the ATM Workgroup Switch Base Unit ship...

Page 76: ...network administrator to determine whether the Base Unit will be mounted on a surface or in a rack If you are using the ATM Workgroup Switch Cabling Chart that came with the IBM 8250 8260 8285 Plannin...

Page 77: ...eps to mount the Base Unit in a rack 1 Look at the rack inventory chart provided by your network administrator to determine where in the rack the Base Unit should be mounted 2 Insert the lower left ha...

Page 78: ...and partially tighten the upper two screws 5 Tighten all four screws securely with a screwdriver 6 Return to Procedure 1 Mounting the ATM Workgroup Switch Components on page 22 50 IBM 8285 Nways ATM...

Page 79: ...at attach the two mounting brackets to the sides of the Base Unit The middle screw with the Phillips head is visible but should not be loosened 2 Rotate the brackets and reattach them to the Base Unit...

Page 80: ...Mounting Brackets for Surface Mounting 3 Place the Base Unit on the surface where it is to be used 4 Return to Procedure 1 Mounting the ATM Workgroup Switch Components on page 22 52 IBM 8285 Nways AT...

Page 81: ...or install it 2 Handle the board by the faceplate only Use one of the following proper grounding techniques if possible when you install the 155Mbps ATM I O Card Use a foot strap and grounded mat or w...

Page 82: ...anti static shielding bag in which your 155Mbps ATM I O Card was shipped for future storage or shipment Record the serial number of the I O card you received 54 IBM 8285 Nways ATM Workgroup Switch In...

Page 83: ...he power cord you risk damaging the ATM Workgroup Switch 2 Loosen the knurled screws on both sides of the dummy slot cover and remove it from the front panel of the Base Unit Figure 26 Removing the Du...

Page 84: ...Inserting the 155Mbps ATM I O Card 4 Slide the module into the Base Unit until it snaps into place and is flush with the front panel of the Base Unit 56 IBM 8285 Nways ATM Workgroup Switch Installati...

Page 85: ...O card into Place 5 Push in and finger tighten the knurled screws on both sides of the I O card 6 Return to Procedure 1 Mounting the ATM Workgroup Switch Components on page 22 Chapter 5 Mounting the...

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Page 87: ...3 for DANGER and CAUTION notices that concern this product and their translations Contents of the Expansion Unit Shipping Group Figure 29 illustrates the contents of the ATM Workgroup Switch Expansion...

Page 88: ...and Site Preparation Guide GA33 0285 this information is found in the top portion of that chart Notes 1 Make sure that there is adequate space around the Base Unit to provide sufficient ventilation fo...

Page 89: ...teps to mount the Expansion Unit in a rack 1 Look at the rack inventory chart provided by your network administrator to determine where in the rack the Expansion Unit should be mounted 2 Insert the lo...

Page 90: ...Rack Mounting the Expansion Unit 4 Insert and partially tighten the upper two screws 5 Tighten all four screws securely with a screwdriver 62 IBM 8285 Nways ATM Workgroup Switch Installation and User...

Page 91: ...igure 31 Attaching the Expansion Interface Cable Attach the other end of the cable to the Expansion Connector on the Base Unit in the same way Finger tighten the two jack screws on each connector 7 Re...

Page 92: ...e 32 Retain the brackets for possible future rack mounting Figure 32 Attaching the Mounting Brackets for Surface Mounting 3 Place the Expansion Unit on top of the Base Unit that it will be connected t...

Page 93: ...es into the workgroup switch when inserting them in the workgroup switch s left and right card guides To assure proper installation simply match the left and right card guides as you slide the module...

Page 94: ...d with a dummy module loosen the knurled screws on both sides of the cover and remove it from the front panel of the Expansion Unit Figure 33 Removing the Dummy Module Store the dummy module in a safe...

Page 95: ...ia Module Ejectors Open and Closed Positions 3 Match the module circuit board to the slot s left and right card guides The easiest way to do this is to line up the module circuit board with the number...

Page 96: ...ter of the ATM media module to pull the module into the slot When the module makes contact with the backplane connectors seat the module into the connectors by pressing each ejector simultaneously int...

Page 97: ...e lit step 1 in Figure 36 on page 70 If they are not lit check that the power outlet is working correctly If the outlet is working and the Power LEDs are not lit check the power cords If the power cor...

Page 98: ...r supply The POST should last about 10 seconds Figure 36 shows the patterns of the Status LEDs on the Base Unit and Expansion Unit as the ATM Workgroup Switch performs its POST Figure 36 Pattern of th...

Page 99: ...ing ATM Media Modules to the Network 95 Enabling ATM Ports and Setting Interface Types 96 Chapter 12 Configuring Trunk Connections 99 Procedure 99 Setting Up Trunks Logical Links 100 Setting Static Ro...

Page 100: ...ettings 119 Saving Configuration Settings and Logging Off 119 Reverting Configuration Changes 121 Displaying Configuration Settings 122 Modifying Configuration Settings 123 Reconfiguring Console Port...

Page 101: ...nfiguration console in Normal mode follow the procedures under Setting Up a Configuration Console in Normal ASCII Mode on page 77 SLIP mode In SLIP mode commands are entered via a TELNET session betwe...

Page 102: ...y as shown in the IBM 8285 8260 ATM Command Reference Guide SA33 0385 For example if you enter RWTRAP and rwtrap for the com_name parameter in two separate SET COMMUNITY commands you will create two d...

Page 103: ...e is displayed Possible completions alert all community device lan_emul module_port static_route terminal tftp If you logged on as the system administrator you can enter to display a list of all activ...

Page 104: ...the command 8285 save To enter a parameter such as COMMUNITY with the SAVE command you can type the first few letters for example COMM and press the space bar 8285 save comm The rest of the parameter...

Page 105: ...ange these settings to the values used by the workgroup switch so that the console and the workgroup switch can communicate The factory set default settings for the ATM Workgroup Switch are as follows...

Page 106: ...ASCII Mode on page 77 3 If a data transmission rate other than 9600 is required use the SET TERMINAL BAUD command to configure a data transmission rate 8285 set terminal baud 192 4 Set the local IP ad...

Page 107: ...285 Welcome to system administrator service on 8285 8285 Returning to Normal Mode To switch the configuration console port back to Normal mode use the SET TERMINAL CONSOLE_PORT_PROTOCOL command 8285 s...

Page 108: ...le the interface 3 Select COM1 and 9600 modem speed 4 Configure the local and remote IP addresses 5 The mask is not required 6 PING the IP address of the remote workgroup switch Using TCP IP V2 0 for...

Page 109: ...trol PORT option 3 Do not select a modem under the Modem option 4 Configure the local and remote IP addresses 5 The mask is not required 6 Enter the appropriate hostname in the services host table 7 U...

Page 110: ...Figure 37 shows an example of a remote login to an ATM Workgroup Switch Figure 37 Working in Remote ATM Workgroup Switch Sessions You can remotely log on to only one ATM Workgroup Switch at a time Onc...

Page 111: ...ort that will be used for the TELNET session LAN Emulation Set the ATM address of the workgroup switch If you will use an internal LES start the LES If you will use an external LES enable the port tha...

Page 112: ...hanges are still active they will be lost the next time you reset or reboot the remote workgroup switch To save these changes you must re establish the remote session and enter the SAVE command Automa...

Page 113: ...as described in Service Contact Information on page 89 using the commands set device location set device contact Optional 5 Set the console prompt as described in Console Prompt on page 90 using the...

Page 114: ...urrent password and the new password up to fifteen characters twice as shown below For security purposes the values you enter are not displayed on the screen Enter current administrator password old p...

Page 115: ...up to fifteen characters twice as shown here Enter current administrator password admin password New password new user password Re enter password new user password Then press Enter You are prompted w...

Page 116: ...SET CLOCK command and specify the time and date parameters Then press Enter For example the following command sets the internal clock to 4 44 p m on September 30 1996 8285 set clock 16 44 1996 9 3 Th...

Page 117: ...to simplify the command parameters you need to enter to perform certain ATM tasks you can assign a unique name to each workgroup switch You can then use this name instead of the IP address To set a u...

Page 118: ...d 8285 set terminal prompt ATM2 ATM2 Console Timeout The TERMINAL TIMEOUT parameter is a safety precaution that lets you specify how long you can remain logged on to the configuration console without...

Page 119: ...Default Parameters To check the switch name or contact information use the command 8285 show device To check the console timeout use the command 8285 show terminal Chapter 10 Configuring Basic Workgr...

Page 120: ...the appropriate administrative authority ACN If the ATM subnetwork contains multiple ATM clusters this byte specifies the number of the cluster to which the workgroup switch belongs HN If the ATM clu...

Page 121: ...Workgroup Switch perform the following steps Mandatory 1 Connect the ATM media modules in the Expansion Unit to the network as described in Connecting ATM Media Modules to the Network on page 95 using...

Page 122: ...isabled to prevent unauthorized connections In this case the ATM media modules will have their network setting set to isolated If you remove an ATM media module from the Expansion Unit and then reinst...

Page 123: ...media module use the command 8285 set module 3 isolated When you isolate an ATM media module from the network it remains in Reset mode and no activity takes place on it Its current configuration setti...

Page 124: ...een ATM devices For example to enable port 2 on the Base Unit slot 1 as a UNI port 8285 set port 1 2 enable uni Slot Numbers in the Workgroup Switch The ATM Workgroup Switch Base Unit is defined as sl...

Page 125: ...Disabling an ATM Port To disable an ATM port that is connected to a failing device for example use the command 8285 set port 1 2 disable Chapter 11 Configuring Ports and Media Modules 97...

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Page 127: ...he other ATM switches in the network To set up trunks to other switches as described in Setting Up Trunks Logical Links on page 100 use the command set logical_link 2 If the switches you will connect...

Page 128: ...tting Static Routes to Other Subnetworks If a switch to which you want to connect resides in another ATM subnetwork you must also assign a local ATM cluster number ACN to the static route for that sub...

Page 129: ...hannel best_effort PVC set and started 8285 set pvc 1 2 2 4 4 2 channel reserved_bandwidth 5 PVC set and started 8285 show pvc all Local end point Remote end point Port id type Vpi Vci Port Vpi Vci HN...

Page 130: ...virtual path connections best effort from port 1 2 in the workgroup switch to port 4 4 in the remote switch hub number 2 in the cluster 8285 set pvc 1 2 1 4 4 2 channel best_effort PVC set and started...

Page 131: ...subnetwork mask to the ATM Workgroup Switch as described in IP Address and Subnetwork Mask on page 104 using the command set device ip_address 2 Set the IP address of the default gateway as described...

Page 132: ...twork mask for an ATM class C device 8285 set device ip_address atm 195 44 45 48 FF FF FF The subnetwork mask is specific for each type of Internet class In general the subnetwork mask is the group of...

Page 133: ...th the address 195 44 45 26 as the default gateway 8285 set device default_gateway 195 44 45 26 ARP Server The ARP Address Resolution Protocol server is used in a Classical IP Over ATM network to map...

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Page 135: ...n start 2 If you want to start a LAN Emulation Client for example for TFTP functions configure the LEC parameters as described in Setting Up a LAN Emulation Client on page 111 using the command set d...

Page 136: ...IBM 8285 8260 ATM Command Reference Guide Starting a LES Token Ring The following sample command includes parameters to start a Token Ring LES 8285 set lan_emul server 2 start tr 4 4544 ENTER 8285 Emu...

Page 137: ...name LAN2tr Desired LAN name LAN2tr Actual max frame size 4544 Desired max frame size 4544 Max number of clients 4 ATM address 39 99 99 99 99 99 99 99 99 1 5 5 5 5 5 5 5 3 Current number of operation...

Page 138: ...th Desired LAN name LAN1eth Actual max frame size 1516 Desired max frame size 1516 Max number of clients 124 ATM address 39 99 99 99 99 99 99 99 99 1 5 5 5 5 5 5 5 2 Current number of operational LECs...

Page 139: ...external In the case of an internal LES you should start the LES before you configure the LEC in order to be able to get its ATM address via SHOW LAN_EMUL SERVERS 3 The LEC does not support a LECS co...

Page 140: ...parameter the other parameters may be entered in any order The first time the SET DEVICE LAN_EMULATION_CLIENT ETH is used you must configure all four parameters before saving the configuration setting...

Page 141: ...Notes 1 You can define several ATM addresses for the LECS but only one can be enabled at a time using the command SET LAN_EMUL CONFIGURATION_SERVER ACTIVE_WKA 2 In order to use this method the LECS mu...

Page 142: ...r virtual channel connection VCC the range of allowed VCI values includes the value 17 Define a PVC on the LEC side with vpi vci equal to 0 17 as shown here C set pvc 1 5 1 2 6 5 channel 17 17 best_ef...

Page 143: ...e IP address and subnetwork mask as described in IP Address and Subnetwork Mask IP only on page 117 using the command set device ip_address 2 Set the default gateway as described in Default Gateway IP...

Page 144: ...e 118 using the command set community 4 Specify which alerts you want to enable as described in Alerts IP LE on page 118 using the command set alert 5 Return to Procedure 2 Configuring the ATM Workgro...

Page 145: ...to the workgroup switch For details on setting up a LEC see Setting Up a LAN Emulation Client on page 111 Default Gateway IP LE The default gateway is the IP address of the gateway that will receive a...

Page 146: ...s case sensitive Be sure therefore to enter the community name in uppercase or lowercase letters exactly as you want it to appear To display a list of existing community names use the SHOW COMMUNITY c...

Page 147: ...e to module specific parameters and to any of the following workgroup switch parameters Alert Community Device LAN_emul Module_port Static_route Terminal TFTP When you make changes with the SET comman...

Page 148: ...nd pressing Enter The system prompts you when you are logged off 8285 logout ENTER Bye If when logging off you have changed workgroup switch configuration parameters but forgotten to save them the fol...

Page 149: ...RT TERMINAL command you can later revert the prompt setting back to the default atm2 revert terminal ENTER Reverting terminal configuration 8285 Note that when you enter the REVERT TERMINAL command yo...

Page 150: ...on 1 Y Y Y 8285 ATM Streamer status connected hardware okay enable Normal P N S N EC level Manufacture Operational FPGA version 7 5 Backup FPGA version FEDF Type Mode Status 1 1 UNI enabled UP NO ACTI...

Page 151: ...onvolatile memory To do so you must use the SAVE command before logging off See Saving Configuration Settings and Logging Off on page 119 for more information Modifying LES Configuration Settings 1 Be...

Page 152: ...e the module for ATM data transmission you must reconnect it to the network and enable it As another example to display the complete status of ATM port 13 enter 8285 show port 1 13 verbose ENTER 1 13...

Page 153: ...console settings Saving Reconfigured Console Port Settings After you use the SET TERMINAL command to reset the baud rate the parity or the data bit value for the ATM Workgroup Switch the change is ac...

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Page 155: ...Workgroup Switch 129 Before You Begin Cabling 129 Connecting Devices to the 25 6Mbps ATM Ports 131 Chapter 18 Attaching 155Mbps Devices to the I O card 133 Before You Begin Cabling 133 Connecting a D...

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Page 157: ...rip hazards by routing the cables away from aisles and other areas where people walk If such routes cannot be avoided use floor cable covers or similar material to secure and protect the cables Be sur...

Page 158: ...ted Pair Category 5 FTP Foiled Twisted Pair SFTP Screened and Foiled Twisted Pair STP Shielded Twisted Pair TRUNK Rigid cable PATCH Flexible cable For more information refer to the IBM 8250 8260 8285...

Page 159: ...ur enterprise s procedures for cable labeling If there is more than one wiring closet on a floor record the wiring closet identifier or location and the cable identifier on the same line 4 In the wiri...

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Page 161: ...people walk If such routes cannot be avoided use floor cable covers or similar material to secure and protect the cables Be sure that the cables connected to the ATM Workgroup Switch are supported so...

Page 162: ...tical power budget for the 155Mbps port and cable size using Table 11 and Table 12 on page 201 2 Verify that the overall power loss in the 155Mbps link due to connectors splices fiber cable type patch...

Page 163: ...port Transmit and Receive are marked on the ATM port See Figure 41 on page 192 for an illustration of the Transmit and Receive parts of the 155Mbps ATM port 2 Label the connector on the patch panel o...

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Page 165: ...Expansion Unit 151 Problems with Port LEDs on the Base Unit 153 Problems with LEDs on Expansion Unit Modules 154 Problems with the Configuration Console 155 Problems with Configuring Expansion Unit Mo...

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Page 167: ...can start only one remote session on an ATM Workgroup Switch This is ideal for small and medium installations with remote occasional monitoring From a network management station running IBM Nways Cam...

Page 168: ...e and trap The ATM Workgroup Switch sends alerts to the IP addresses in the community table that have either trap read trap or all assigned The workgroup switch can be configured via SNMP from station...

Page 169: ...roceed as follows 1 FTP to www raleigh ibm com 2 Enter anonymous as the login name 3 Enter your full Internet E Mail address as the password 4 Change to the HUB directory by entering cd pub products l...

Page 170: ...142 IBM 8285 Nways ATM Workgroup Switch Installation and User s Guide...

Page 171: ...is the IBM Networking home page From here you can access product announcements publications information and information regarding hardware and software updates IBM Bulletin Board System Using a modem...

Page 172: ...by inband manual and out of band operations as shown in Figure 38 For more information on the commands used to start these operations see the IBM 8285 8260 ATM Command Reference Guide Figure 38 Uploa...

Page 173: ...ing ATM Workgroup Switch commands 1 SET TFTP SERVER_IP_ADDRESS to define the server where the microcode is stored 2 SET TFTP FILE_NAME to define the pathname of the file on the server 3 SET TFTP FILE_...

Page 174: ...1 SET TRACE to enable and disable trace recording 2 SET TFTP SERVER_IP_ADDRESS to define the server connected to the workgroup switch 3 SET TFTP FILE_NAME to define the pathname of the file on the hos...

Page 175: ...roup Switch After locating the directory where the microcode updates are stored use the workstation as the configuration console Log on using the administrator password and enter the following command...

Page 176: ...t Type Mode Status 1 1 UNI ENABLED UP OKAY 1 2 NNI DISABLED UP NO ACTIVITY 1 3 UNI ENABLED UP OKAY 1 4 UNI DISABLED NOT IN SERVICE 1 5 UNI DISABLED NOT IN SERVICE 1 6 UNI DISABLED NOT IN SERVICE 1 7 U...

Page 177: ...oting procedures see Further Assistance on page 179 4 Are all ATM devices successfully attached to the workgroup switch See the following sections If the problem is still unsolved after following thes...

Page 178: ...ative Possible failing parts Power Supply Mother Board or Box OK LED green remains OFF after completion of POST Steps to Take 1 Press the RESET button on the workgroup switch to check that the LEDs ar...

Page 179: ...green remains OFF after completion of POST Steps to Take 1 Press the RESET button on the Base Unit to check that the LEDs are functioning properly If only the Power and Fault LEDs light ON then the O...

Page 180: ...n Connector 4 Power on the Base Unit Results The Wrap Test is OK if the Base Unit enters maintenance mode and displays the prompt Call your IBM service representative Possible failing parts Expansion...

Page 181: ...ng pattern Status LED green OFF not enabled ON enabled Output Activity LED yellow OFF Error LED yellow OFF If any of the LEDs are incorrectly lit follow the troubleshooting procedures listed below No...

Page 182: ...gured All ports are disabled so the LEDs are OFF 2 Module is not connected to the backplane correctly Unplug the module then plug it back in carefully When you feel that the module is almost inserted...

Page 183: ...default settings on the console the default parameters are 9600 bauds 8 data bits 1 stop bit no parity If this does not work try different settings until you find the right configuration Characters ap...

Page 184: ...TAIN command Explanation The workgroup switch is running in maintenance mode Steps to Take 1 Verify that the expansion connector wrap plug is not attached 2 To return to normal operation mode enter th...

Page 185: ...ort 4 Power on the Base Unit Results During the POST the OK and Fault LEDs blink alternately After 5 seconds if The OK LED green lights ON and the Fault LED yellow is OFF the wrap test is OK The OK LE...

Page 186: ...the Install column and N in the Connect and Operation columns 3 If N appears for Install make sure that the module is properly plugged into the backplane connectors in the hub If N appears for Connect...

Page 187: ...d Reference Guide For assistance contact your IBM service representative Status UNKNOWN Explanation Port status is not available because port is not reachable Steps to Take 1 Use the SHOW MODULE comma...

Page 188: ...the port is enabled make sure that the remote device is operational and that its adapter is securely plugged in 4 Make sure that the fiber cable is securely plugged on the hub 5 Perform the wrap test...

Page 189: ...the wrap test 1 Disable the port with the SET PORT x x DISABLE command 2 Unplug the device cable from the port connector 3 Plug the appropriate wrap plug into the port connector 4 Enter the WRAP comma...

Page 190: ...was powered off without disabling the port first If so disable and then re enable the port 4 Check the ATM address registration as described in Problems with ATM Address Registration on page 164 5 Per...

Page 191: ...SSI or NNI port to be able to establish SVCs For SSI ports the bandwidth allocation must be the same at both ends of the trunk See the IBM 8285 8260 ATM Command Reference Guide The status of an SSI p...

Page 192: ...x set for the workgroup switch use the SET DEVICE ATM_ADDRESS command to change the workgroup switch s ATM address so that its network prefix is the same as the network prefix used by the ATM device B...

Page 193: ...mand to make sure that the ATM media port s status is OKAY If the status is not OKAY restart the client If the port s status does not change to OKAY run a trace by entering the SET TRACE and UPLOAD IN...

Page 194: ...M address of an workgroup switch located on the PING path has been changed Disable the SSI link and re enable it If the above does not solve the problem take a TRS dump with the DUMP TRS command and c...

Page 195: ...ttached to it 2 The LEC does not support the same Ethernet type as the workgroup switch LEC Check that the local LEC is emulating the same Ethernet type 802 3 or Ethernet V 2 DIX as the remote LEC 3 C...

Page 196: ...pload fails from the Workgroup Switch Explanation The upload can be done either from the configuration console local console or TELNET or from the SNMP Manager ATMC or MIB Browser Before performing an...

Page 197: ...r TELNET check the return code by using the SHOW TFTP command 1 Messages Error generic error Host Access Violation Access Rights Violation access rights violation File already exists file already exis...

Page 198: ...Messages Checksum Error Packet error checksum error There has been a problem during the transfer Download the file again A byte is corrupted in the source file Either get a new source re install the...

Page 199: ...ervice The LES does not tell you that it has lost its address because it only tells that once the connection to the switch is returned Check that the LES cable is well plugged then check that the LES...

Page 200: ...tion The workstation did not send the re registration message within 3 minutes Steps to Take 1 Ensure that the port for the workstation is connected properly If not green ensure that the cable between...

Page 201: ...e Nways Campus Manager ATMC and LAN emulation server which can provide you with a lot of information through the LES monitor If you know neither the emulated MAC addresses of the stations nor the ATM...

Page 202: ...everal modules The ATM address of an workgroup switch located on the PING path has been changed Disable the SSI link and re enable it If the above does not solve the problem take a TRS dump with the D...

Page 203: ...tion The LE version for the LEC is not compatible with the LES BUS version 2 Explanation The workgroup switch LEC parameters are incomptaible with the LES BUS For example the emulated LAN type of the...

Page 204: ...with the same Routing Domain number RDN Make sure that each boundary switch is configured with a different ATM Cluster number ACN 3 Use the SHOW LOGICAL LINK command to make sure that the logical link...

Page 205: ...e login to it using TELNET First make sure that the trace is not active then disable the ports one at a time until the TELNET session gives a normal response time The last port that you disabled shoul...

Page 206: ...edirecting Received Cells to the transmit side Now from the ATM Analyzer generate traffic on the VCI 5 and compare the outgoing cells with the incoming cells If some cells are lost or corrupted contac...

Page 207: ...uploaded to the host by entering the UPLOAD command Trace information uploaded to the host by entering the UPLOAD command Dump information uploaded to the host by entering the UPLOAD command The foll...

Page 208: ...ing set trace main_trace on or set trace trs_trace on as requested by the IBM service representative 3 Stop the trace by entering the SET TRACE command and specifying off Note The TRACE command may de...

Page 209: ...the console A sample message is shown here Change trap on module 1 The first field in the trap message is described in Table 5 The other fields of information that can appear are self explanatory and...

Page 210: ...182 IBM 8285 Nways ATM Workgroup Switch Installation and User s Guide...

Page 211: ...ion Unit to the Base Unit 192 Connecting Devices to the Console Connector 195 Attaching the Configuration Console to the Workgroup Switch 196 Attaching a Modem to the Workgroup Switch 196 Fiber Cablin...

Page 212: ...184 IBM 8285 Nways ATM Workgroup Switch Installation and User s Guide...

Page 213: ...60 C 33 8 to 140 F Operating Humidity 8 to 95 non condensing Air Exhaust Base Unit 1 4 m3 min Acoustic Base Unit 5 8Bel with Expansion Unit 6Bel Mechanical 8285 00B Base Unit Dimensions 17 3 in W x 20...

Page 214: ...0 V Surge Current 40 A Leakage Current 2 7 mA Caloric Value 44 Kcal hr 174 59 BTU Power Budget Base Unit Total budget for I O card feature 5V 15A 12V 1A 5V 0 12V 0 Expansion Unit Feature Total budget...

Page 215: ...International CISPR22 Class B with Shielded cables Class A with Unshielded cables EEC EN 55022 1994 Class B with Shielded cables Class A with Unshielded cables EEC EN 60555 2 3 EEC EN 50082 1 USA FCC...

Page 216: ...188 IBM 8285 Nways ATM Workgroup Switch Installation and User s Guide...

Page 217: ...o 25 6Mbps Ports This section describes Twisted pair cables for 25 6Mbps devices RJ 45 connectors The RJ 45 wrap plug used to test a 25 6Mbps ATM port Twisted Pair Cable Figure 39 below shows the pin...

Page 218: ...n Compliant 25 6Mbps Device 1 RD 3 TD 2 RD 6 TD 7 TD 4 RD 8 TD 5 RD IBM also makes a converter interposer for such non ATM Forum compliant devices P N 10H3904 which may be ordered separately SSI and N...

Page 219: ...al name associated with each pin on this connector and Figure 40 shows how the pins are numbered Table 8 Pin Signal Assignments for 25 6Mbps Port Connectors Pin Number Signal Name 1 RD 2 RD 3 4 5 6 7...

Page 220: ...2 or the AMP SC wrap plug P N 19G5609 for the SC connector on the 155Mbps ATM I O Card and the required attenuator P N 80G3425 can be ordered separately Connecting the Expansion Unit to the Base Unit...

Page 221: ...1 8 DATAOUT7 DATAOUT0 9 DDELOUT 10 BPOUT 11 SPAREOUT 12 19 DATAIN7 DATAIN0 20 DDELIN 21 PKT SYNC 22 SPAREIN 23 CLOCKIN 24 CLOCK WRAP 25 PKT SYNC WRAP 26 PRIZMA TX 27 PRIZMA RX 28 EXPANSION VPD 29 VPD...

Page 222: ...connector P N 58G9869 is included with the Expansion Unit shipping group The pin assignments for the wrap plug are shown in Figure 42 on page 194 Figure 42 Pin Assignment Expansion Connector Wrap Plug...

Page 223: ...p Switch on page 196 For information on connecting a server to the Console Connector refer to the documentation supplied with the server RS 232 Connector The RS 232 connector is the 25 pin female conn...

Page 224: ...e Null Modem Interposer to either end of the RS 232 modem cable 2 Plug one end of the RS 232 modem cable into the 25 pin Console port on the front panel of the Base Unit For the exact position of the...

Page 225: ...configure a modem enter the following commands from the console to which the modem is attached 1 Type at F and press Enter to restore the factory default settings 2 Type at d and press Enter to ignor...

Page 226: ...on PSN Dialing Dial Mode TONE Dial Delays First Delay 7 Other Delay 1 Calling Tone Call Tone V25 Call Process Detect ALL Calling Timer Call Abort 6 Answering Auto Answer YES Rings 2 Attachment PSN Lev...

Page 227: ...e total power loss in each ATM fiber link and verify that the distance between the two workgroup switch ports or between the workgroup switch port and an ATM user device does not exceed the optical po...

Page 228: ...this value you can ensure the integrity of the ATM connections you create The Optical Power Budget value shows the amount of optical power left to compensate for power losses from connectors splices p...

Page 229: ...0 dB 29 dB 9 dB 2 km 1 24 miles Singlemode 9 125 micron 20 km 12 4 miles Table 12 Optical Power Budget for workgroup switch 155Mbps Port to Port Connections Fiber Cable Type and Size Minimum Transmitt...

Page 230: ...d that high quality low loss connectors be used in your ATM connections Table 13 Optical Power Loss per Connector Connector Type Cable Size microns Average Loss dB Physical contact 62 5 to 62 5 0 4 50...

Page 231: ...can be Received in Table 11 and Table 12 on page 201 Table 14 shows the average power loss for each splice type according to cable size When calculating the total power loss for ATM connections in yo...

Page 232: ...e cable manufacturer When calculating the total power loss for an ATM connection be sure to use the highest value in the range given in the Power Loss column In this way your calculation covers a wors...

Page 233: ...es the loss resulting from the two connectors and the bulkhead Table 16 shows the ranges and typical amounts of power loss for different types of patch panels When calculating the total power loss for...

Page 234: ...iginally transmitted from the source end system in the connection The total power loss at each jumper cable is shown in Table 17 Note that this value includes the combined power loss from the two conn...

Page 235: ...odes for Clear Causes in the ATM Workgroup Switch Error Code Decimal Error Code Hex Meaning of Clear Cause 1 0x1 ATM address not defined assigned 2 0x2 There is no route to the transit network 3 0x3 T...

Page 236: ...ce value 82 0x52 Identified channel does not exist 88 0x58 Incompatible destination 89 0x59 Invalid endpoint reference 91 0x5B Invalid transit network selection 92 0x5C Too many pending add party requ...

Page 237: ...ional code failed 0023 After 3 retries the switch FPGAs did not initialize properly 0030 The initialization or the diagnostics failed for the switch the SPU Switch Processing Unit or the serial link 0...

Page 238: ...ver Error Codes Table 20 IBM LAN Emulation Server Error Codes Error Code Meaning 1 Network cause 2 Internal cause 3 Memory exhausted 4 Network is down 210 IBM 8285 Nways ATM Workgroup Switch Installat...

Page 239: ...in ISO 8348 CCITT X 213 As shown in Figure 46 the ATM Workgroup Switch supports the three initial domain identifier IDI formats specified by the ATM Forum DCC Data Country Code E 164 Specific Integra...

Page 240: ...ddress This value is handled as a bit mask and is not checked by the ATM subsystem AA Administrative Authority 3 bytes Identifies the organizational entity that allocates addresses for the remainder o...

Page 241: ...ces based on topological significance In an workgroup switch ATM subsystem this value consists of two 1 byte subfields ACN The ATM Cluster Number HN The Hub Number End System Part The fields that make...

Page 242: ...214 IBM 8285 Nways ATM Workgroup Switch Installation and User s Guide...

Page 243: ...index or to the IBM Dictionary of Computing A A ampere AAL ATM Adaptation Layer ac Alternating current active 1 Able to communicate on the network A token ring network adapter is active if it is able...

Page 244: ...onditions are transmitted per second Contrast with bits per second bps BER Bit error rate bit error rate BER The ratio of the number of bits experiencing error on a telecommunications link divided by...

Page 245: ...cess unit or network connection point Contrast with attach connection 1 In data communication an association established between functional units for conveying information I A 2 In Open Systems Interc...

Page 246: ...or auxiliary storage onto an external medium such as tape diskette or printer 4 To copy the contents of all or part of virtual storage for the purpose of collecting error information E EIA Electronic...

Page 247: ...d priority level for the message HEC Header Error Control host computer 1 The primary or controlling computer in a multi computer installation or network 2 In a network a processing unit in which resi...

Page 248: ...t with remote local area network LAN 1 A computer network located on a user s premises within a limited geographical area Communication within a local area network is not subject to external regulatio...

Page 249: ...2 In communications a test of reachability parameter 1 A variable that is given a constant value for a specified application and that may denote the application I A 2 An item in a menu or for which th...

Page 250: ...electronic circuit that converts an optical signal to an electrical logic signal remote 1 Pertaining to a system program or device that is accessed through a telecommunication line 2 Contrast with loc...

Page 251: ...he interface between amm subsystems in a cluster T TCP IP Transmission Control Protocol Internet Protocol Telnet In TCP IP an application protocol that allows a user at one site to access a remote sys...

Page 252: ...address 2 A quantity that can assume any of a given set of values A VBR Variable bit rate VCC Virtual channel connection VCI Virtual channel identifier in ATM cell header VPI Virtual path identifier...

Page 253: ...following publications contain supplementary information about ATM De Prycker M Asynchronous Transfer Mode Solution for Broadband ISDN New York Ellis Horwood 1991 Handel R and Huber M N ATM Networks C...

Page 254: ...e the command get rfcnnnn txt where nnnn is the number of the RFC number you are requesting Electronic Mail SERVICE NIC DDN MIL is an automated service provided by the NIC It allows access to RFCs and...

Page 255: ...nector Expansion Unit 9 193 Base Unit 3 5 advanced diagnostics connector 5 8 ATM ports 5 6 Base Unit continued console port 5 8 Expansion Unit connector 5 8 front panel 5 installing 47 power input 5 8...

Page 256: ...on problems 149 connecting modules 95 connections maximum number 44 connectors base 193 expansion 193 connectors continued RJ 45 191 RS 232 195 SC 192 console port Base Unit 5 77 157 console port sett...

Page 257: ...ddress of console 78 IP address setting 104 117 IP Over ATM See Classical IP Over ATM isolating modules 95 L LAN Emulation Configuration Server See LECS LAN Emulation Over ATM 11 14 15 107 116 ATM For...

Page 258: ...87 permanent virtual connection See PVCs picocode updating 143 145 PING 168 PING problems 166 point to multipoint connection 13 44 point to point connection 13 44 ports See ATM ports POST Power On Se...

Page 259: ...subsystem 31 34 surface mounting 48 51 60 64 surge current specifications 186 SVC APIs 11 SVCs 11 12 13 switch to switch interface SSI 11 32 34 96 switched virtual connection See SVCs T table communi...

Page 260: ......

Page 261: ...ncerning this book We will greatly appreciate them and will consider them for later releases of the present book If you prefer sending comments by FAX or electronically use FAX 33 93 24 77 97 E mail F...

Page 262: ...We d Like to Hear from You SA33 0381 01 IBM Fold and Tape Please do not staple Fold and Tape PLACE POSTAGE STAMP HERE IBM France Centre d Etudes et Recherches Service 0798 BP 79 06610 La Gaude France...

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Page 264: ...IBM Part Number 51H4526 Printed in U S A SA33 381 1 51H4526...

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