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

20-2MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. 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

20-3MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Start AtmDirector Display the ATM network fabric Interpret the ATM topology map Display device and link information Modify the ATM topology display Objectives (cont.)

20-4MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Uses SNMP packet types over AAL5 Adjacent nodes exchange autodiscovery information Automatically configures end-system addresses AtmDirector and ILMI

20-5MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Physical interface MIB Per-VCC statistics MIB ATM-layer interface MIB ATM-layer statistics Virtual channel MIB AToM MIB

20-6MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Required on at least one ASP interface Used for network management Verifying Parameters on the LS1010 ASP

20-7MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Configuring ILMI Parameters on the LS1010 ASP Enable ILMI Show ILMI status Show ILMI configuration

20-8MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. 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

20-9MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. 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

20-10MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Configuring the LECS and LES/BUS

20-11MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Configuring a Backup LECS

20-12MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Discovering the ATM Network

20-13MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Displaying the ATM Network Fabric

20-14MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Interpreting the ATM Topology Map

20-15MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Displaying Details in the ATM Topology Map

20-16MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Modifying the Topology Map Preferences

20-17MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. 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

20-18MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. 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

20-19MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Summary (cont.) Display the ATM network fabric Interpret the ATM topology map Display device and link information Modify the ATM topology display

20-20MCSIDocumenting the ATM Network Topology Copyright © 1998, Cisco Systems, Inc. Lab Diagram ATM Switches Catalyst Switches Fiber Catalyst Switches