Cabletron Systems SmartCell 6A000 manual UNI Routes, Iisp Metrics and Load Sharing

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Switch Administration

Setting Up Routes

IISP Metrics and Load Sharing

You can assign a metric value to each IISP route. The metric "weights" one route against another. The IISP metric specifies which of two or more routes is used the most for setting up calls. Counters are set up for each route that equal the route's metric. These counters are decremented as calls are set up through the routes. When a route's counter reaches zero, that route is not used until all other router counts reach zero, and all router counters are reset to their metric value. Obviously, the route with the lowest metric decrements to zero first and remains unused until all other routes also decrement to zero.

For example, two parallel routes are set up for redundancy and for load sharing between two switches. One route (A) has a metric of one, while the other route (B) has a metric of two. This means that for every call set up through A, two calls are set up through B.

The exception to the example above occurs when one of the parallel routes uses more bytes of the ATM address to define the route destination. If true, the path through the route with the longer destination address is always selected first.

For example,

If routes A and B are parallel and are defined by

A = port A1, port address: 11:22:33, and metric 3

B = port B1, port address: 11:22:33:44:55, and metric 1

B is always favored for use over A and is used as often as possible, regardless of the fact that it has a smaller metric than A.

SigConfig and PortAutoDetect with IISP Routing

The SmartCell 6A000 and the device to which it is connected must both use the same signaling type: UNI 3.0 or UNI

3.1.Use modify sigconfig currentinterfacetype or defaultinterfacetype to set the interface type to match the

device on the other end of the connection. You also can use modify portautodetect to turn on auto detection of signaling type, so the SmartCell 6A000 will sense the signaling type of the other device and use the same type.

IISP route signaling expects one end of the route to adopt user behavior and the other end to adopt network behavior. However, some devices to which you connect your SmartCell 6A000 switch may be incapable of negotiating which is network and which is user. If a device is unable to negotiate, use the currentinterfacerole or defaultinterfacerole parameter of the modify sigconfig command to set the port on the switch to the behavior opposite to that of the connected device.

4.3.2UNI Routes

Use static UNI routes when a device being connected to the SmartCell 6A000 switch either does not support ILMI or whose implementation of ILMI is incompatible with the SmartCell 6A000.

Use the add uniroute command to add static routes to the UNI route table of the switch.

For example, to add to port A1 a static UNI Route that connects to a device with ATM address 44:00:00:00:00:00:00:00:00:00:14:41:80:00:30:E5:14:41:80:00, enter the following:

SmartCell ZX # add uniroute

PortNumber(A1) :

UNIATMAddress() : 44:00:00:00:00:00:00:00:00:00:14:41:80:00:30:E5:14:41:80:00

SmartCell ZX #

SmartCell 6A000 User Guide 4-9

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Contents Order number Part number 04-0045-01 Rev. a SmartCell 6A000 User GuideIi 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 Check Accessory Carton Contents Switch Installation and SetupUnpacking the Switch Inspecting the Switch6A000-04 and 6A000-02 front panels Mbps STS-3c/STM-1 UTP5, 4 Ports Installing the SwitchInstalling the Switch Installing the SmartCell 6A000 Adapters provided for connecting to the switch Configuring the Switch6A000 console and network connections Console Commands Using the ConsoleClient Adding and ModifyingEnter ServerAddress 390000000000000000001441800020d414418001 Console HelpUNIATMAddress 390000000000000000001441800020d414418000 Creating AN IP Over ATM Vlan IP Over ATM and LaneIpatmarp ATM Addressing for IP over ATMSmartCell ZX # add wellknownaddress Creating AN Emulated LANELANType802.3 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 Path server.ima Upgrading Operating SoftwareUnsuccessful Update Setting UP RoutesUsing the df Command to Recover ATMAdress 39000000000000000000144780 SW2s netprefix Iisp RoutingCreating Iisp Routes SmartCell ZX # show netprefix a4ATMAdress 39000000000000000000141500 SW3s netprefix Iisp Routes Among Multiple SwitchesATMAdress 39000000000000000000144180 SW1s netprefix Iisp routes between multiple switches Default Iisp RoutesIisp Routes and Network Topology For example, create a default Iisp route from port B1Routing Loops 112255 112244UNIATMAddress 440000000000000000001441800030E514418000 SigConfig and PortAutoDetect with Iisp RoutingUNI Routes Iisp Metrics and Load SharingIP Routing To see the route, enter the show route command on SW2 Logs and AlarmsLog Message System How Log Messages and Alarm Messages DifferViewing and Filtering Messages Console Setting UP PVC Connections10.1.1.0 Connecting to Local Client Through Point-to-Point PVCPoint-to-Point PVCs 100Point-to-Multipoint PVCs Show vccmask Non-zero VPIsSmartCell ZX # show portconfig a1 SmartCell ZX # set portconfig a1Traffic Descriptors Traffic Management5000 8000Call Admission Control Policy # set cacparams Class of Service QueuesPortNumberALL 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 Figure A-1 Front panel CPU ModuleInput/Output Port Modules Switch Modules MSM and ESMModule TypeCharacteristics Figure A-3 Group and port identifiers Port Numbering3 I/O Modules FeaturesSwitch Module Signaling and RoutingATM Forum LAN Emulation Lane Connection ManagementLAN Servers and Clients ManagementTechnical Specifications SpecificationsPhysical Specifications Standards Specifications ATM Port SpecificationsRJ-45 DB-25 Pin Color Description CPU Serial Port Pin-Out DescriptionsTable A-11 RJ-45 to DB-25 Adapter Modem Adapter Appendix A-12 SmartCell 6A000 User Guide Internet MIB Hierarchy Appendix B Smartcell 6A000 and SnmpFigure B-1 Internet MIB Hierarchy Zeitnet Proprietary MIBFigure B-2 ZeitNet Private MIBs Interpreting the Object IdentifierProprietary MIB Functions Non-Conformance Console Commands That Affect the AgentClient for Snmp Management MIB ExceptionsNot Supported SmartCell 6A000 User Guide Appendix B-7 Page Telephone Assistance FAX ServiceElectronic Services Appendix C Technical SupportSoftware Warranty Hardware WarrantyRepair Services Appendix D Acronyms Ccitt CACCan CBRNET DCCDTE DVTIeee FCSFifo FTPITU-TSS IOMIP/ATM IPXLLC LESLeselan LISNLS NetbeuiNFS NICPPD PDUPMD PMPSBE SaalSAR SAR-PDUTftp TaxiTCP TDMVlan VCCVCI VCLAcronyms Appendix D-12 SmartCell 6A000 User Guide Index Add wellknownaddress command 3-6 AddressSetting up routes Vlan Index SmartCell 6A000 User Guide
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