Chapter 20:Documenting the ATM Network Topology


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Chapter 20: Documenting the ATM Network Topology 20-1 Copyright © 1998, Cisco Systems, Inc.


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Verify the ATM Switch Processor ILMI parameters Verify the Catalyst® ILMI parameters Enable VTP on the LANE module Discover the ATM network fabric Upon completion of this chapter, you will be able to: Objectives


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Start AtmDirector™ Display the ATM network fabric Interpret the ATM topology map Display device and link information Modify the ATM topology display Objectives (cont.)


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Uses SNMP packet types over AAL5 Adjacent nodes exchange autodiscovery information Automatically configures end-system addresses AtmDirector and ILMI


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Physical interface MIB Per-VCC statistics MIB ATM-layer interface MIB ATM-layer statistics Virtual channel MIB AToM MIB


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Required on at least one ASP interface Used for network management Verifying Parameters on the LS1010 ASP


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Configuring ILMI Parameters on the LS1010 ASP Enable ILMI Show ILMI status Show ILMI configuration


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Configuring ILMI on the Catalyst ATM Module ILMI is enabled by default Well known VPI/VCIs are used for ILMI and signaling ILMI keepalive timers must be enabled at both ends of a link or not used at all


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Disabled by default Must be done before discovery Forces the default VLAN to be added Default VLAN needed for management Enabling VTP on the Catalyst ATM Module


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Configuring the LECS and LES/BUS


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Configuring a Backup LECS


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Discovering the ATM Network


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Displaying the ATM Network Fabric


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Interpreting the ATM Topology Map


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Displaying Details in the ATM Topology Map


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Modifying the Topology Map Preferences


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AtmDirector automatically merges and separates fabric maps Merges concatenate names Separation appends -1 and -2 to original names Original map must be closed to delete it Merging and Separating ATM Fabrics


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Summary Verify the ATM Switch Processor ILMI parameters Verify the Catalyst ILMI parameters Enable VTP on the LANE module Discover the ATM network fabric Start AtmDirector


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Summary (cont.) Display the ATM network fabric Interpret the ATM topology map Display device and link information Modify the ATM topology display


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Lab Diagram ATM Switches Catalyst Switches Fiber Catalyst Switches


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