Cabletron Systems SmartCell 6A000 manual ELANs Across Multiple Switches, Switch Clients, Elan1

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3.2.2ELANs Across Multiple Switches

ELANs can exist within a single switch or they can span multiple switches through IISP routes. When an ELAN spans multiple switches, it's important that all switches within the group use the same LECS. The general rule is "Within an administration domain (a group of switches with related ELANs), there should be exactly one LECS."

To assure that there is only one LECS, you can take one of the following actions:

1.Turn off the LECS using the stop lecs command on all but one switch. The switch with the LECS left running provides LECS support for the rest of the group. Use the set lecsaddress command on all the other switches so that they point to the switch with the running LECS for LECS support.

2.Use the add wellknownaddress command on all other switches to map the Well Known LECS Address to the LECS address of the switch with the running LECS. Now, all devices and clients configured to use the Well Known LECS Address automatically register with the switch with the running LECS.

Note Use IISP routing to connect multiple SmartCell 6A000 switches to form administration domains. See Chapter 4, "Switch Administration." for information on setting up IISP routes.

3.2.3Switch Clients

The concept of SmartCell 6A000 switch client connections is an important concept to understand. A client connection is actually a connection between the VLAN and the SmartCell 6A000 CPU; this CPU connection appears as if the switch is an end station on the VLAN. The SmartCell 6A000 uses local clients to connect itself to the VLANs that it supports.

This is analogous to a phone company that supports a communication system. Even though the phone company maintains the circuits, a call to the phone company itself cannot be made unless the phone company has its own number and connection on its own phone system. Similarly, VLAN membership (and reachability) of a SmartCell 6A000 on any particular VLAN depends upon whether the SmartCell 6A000 has a local client connection for that VLAN.

Clients are created using the add laneclient command for LAN emulation, and add ipatmclient for IP over ATM.

For example, the following adds a switch LANE client to the ELAN elan1:

SmartCell ZX# add laneclient

 

ClientNumber(0)

: 1

LanName(ELAN001)

: elan1

ServerType(LECS)

:

ServerAddress()

:

IPAddress()

: 128.213.77.95

NetMask(255.255.0.0)

:

MTU(1516)

:

SmartCell ZX#

 

Prior to creating this local client connection, end devices could communicate with each other through elan1, but they could not communicate with the SmartCell 6A000.

3-6 SmartCell 6A000 User Guide

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Contents SmartCell 6A000 User Guide Order number Part number 04-0045-01 Rev. aIi SmartCell 6A000 User Guide FCC Class a Notice Declaration of Conformity Addendum Safety Information Class 1 Laser Transceivers Fiber Optic Protective Caps Regulatory Compliance Summary Safety Revision History Table of Contents Troubleshooting Acronyms Index Table of Contents Xii SmartCell 6A000 User Guide List of Figures List of Figures Xiv SmartCell 6A000 User Guide List of Tables List of Tables Xvi SmartCell 6A000 User Guide Introduction Introduction SmartCell 6A000 User Guide Inspecting the Switch Switch Installation and SetupUnpacking the Switch Check Accessory Carton Contents6A000-04 and 6A000-02 front panels Installing the Switch Mbps STS-3c/STM-1 UTP5, 4 PortsInstalling the Switch Installing the SmartCell 6A000 Configuring the Switch Adapters provided for connecting to the switch6A000 console and network connections Using the Console Console CommandsClient Adding and ModifyingEnter ServerAddress 390000000000000000001441800020d414418001 Console HelpUNIATMAddress 390000000000000000001441800020d414418000 IP Over ATM and Lane Creating AN IP Over ATM VlanATM Addressing for IP over ATM IpatmarpCreating AN Emulated LAN SmartCell ZX # add wellknownaddressELANType802.3 The default Ethernet is used ATM Addressing for LAN Emulation Switch Clients ELANs Across Multiple SwitchesElan1 Backing UP and Restoring Switch Configuration Switch AdministrationPath /backdir/config-1 Upgrading Operating Software Path server.imaUnsuccessful Update Setting UP RoutesUsing the df Command to Recover SmartCell ZX # show netprefix a4 Iisp RoutingCreating Iisp Routes ATMAdress 39000000000000000000144780 SW2s netprefixATMAdress 39000000000000000000141500 SW3s netprefix Iisp Routes Among Multiple SwitchesATMAdress 39000000000000000000144180 SW1s netprefix Default Iisp Routes Iisp routes between multiple switchesFor example, create a default Iisp route from port B1 Iisp Routes and Network Topology112255 112244 Routing LoopsIisp Metrics and Load Sharing SigConfig and PortAutoDetect with Iisp RoutingUNI Routes UNIATMAddress 440000000000000000001441800030E514418000IP Routing Logs and Alarms To see the route, enter the show route command on SW2Log Message System How Log Messages and Alarm Messages DifferViewing and Filtering Messages Setting UP PVC Connections Console100 Connecting to Local Client Through Point-to-Point PVCPoint-to-Point PVCs 10.1.1.0Point-to-Multipoint PVCs Non-zero VPIs Show vccmaskSmartCell ZX # set portconfig a1 SmartCell ZX # show portconfig a1Traffic Management Traffic Descriptors8000 5000Call Admission Control Policy Class of Service Queues # set cacparamsPortNumberALL Port ID Queue SmartCell ZX # show switchtrafficcongestion Class of Service Queue Allocation GuidelinesEFCI, EPD, and RM Thresholds Traffic Management Troubleshooting IP Over ATM TroubleshootingLogprint off command Troubleshooting LAN Emulation Diagnosing Congestion Troubleshooting CongestionGlobal Congestion Port Congestion Troubleshooting TroubleshootingCongestion Troubleshooting Congestion Hardware Components Appendix a Features and SpecificationsFront Panel CPU Module Figure A-1 Front panelSwitch Modules MSM and ESM Input/Output Port ModulesModule TypeCharacteristics Port Numbering Figure A-3 Group and port identifiersSignaling and Routing FeaturesSwitch Module 3 I/O ModulesManagement Connection ManagementLAN Servers and Clients ATM Forum LAN Emulation LaneTechnical Specifications SpecificationsPhysical Specifications ATM Port Specifications Standards SpecificationsCPU Serial Port Pin-Out Descriptions RJ-45 DB-25 Pin Color DescriptionTable A-11 RJ-45 to DB-25 Adapter Modem Adapter Appendix A-12 SmartCell 6A000 User Guide Appendix B Smartcell 6A000 and Snmp Internet MIB HierarchyZeitnet Proprietary MIB Figure B-1 Internet MIB HierarchyInterpreting the Object Identifier Figure B-2 ZeitNet Private MIBsProprietary MIB Functions MIB Exceptions Console Commands That Affect the AgentClient for Snmp Management Non-ConformanceNot Supported SmartCell 6A000 User Guide Appendix B-7 Page Appendix C Technical Support FAX ServiceElectronic Services Telephone AssistanceSoftware Warranty Hardware WarrantyRepair Services Appendix D Acronyms CBR CACCan CcittDVT DCCDTE NETFTP FCSFifo IeeeIPX IOMIP/ATM ITU-TSSLIS LESLeselan LLCNIC NetbeuiNFS NLSPMP PDUPMD PPDSAR-PDU SaalSAR SBETDM TaxiTCP TftpVCL VCCVCI VlanAcronyms Appendix D-12 SmartCell 6A000 User Guide Add wellknownaddress command 3-6 Address IndexSetting up routes Vlan Index SmartCell 6A000 User Guide
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