Users Guide

24 Intermediate System to Intermediate System........................................................................................... 418
IS-IS Protocol Overview................................................................................................................................................ 418
IS-IS Addressing..............................................................................................................................................................418
Multi-Topology IS-IS....................................................................................................................................................... 419
Transition Mode........................................................................................................................................................ 419
Interface Support..................................................................................................................................................... 419
Adjacencies...............................................................................................................................................................420
Graceful Restart.............................................................................................................................................................420
Timers........................................................................................................................................................................420
Implementation Information..........................................................................................................................................420
Conguration Information..............................................................................................................................................421
Conguration Tasks for IS-IS.................................................................................................................................. 421
Conguring the Distance of a Route.....................................................................................................................429
Changing the IS-Type.............................................................................................................................................. 430
Redistributing IPv4 Routes.....................................................................................................................................432
Redistributing IPv6 Routes.....................................................................................................................................433
Conguring Authentication Passwords.................................................................................................................434
Setting the Overload Bit......................................................................................................................................... 434
Debugging IS-IS....................................................................................................................................................... 435
IS-IS Metric Styles.........................................................................................................................................................436
Congure Metric Values............................................................................................................................................... 436
Maximum Values in the Routing Table...................................................................................................................437
Change the IS-IS Metric Style in One Level Only................................................................................................ 437
Leaks from One Level to Another..........................................................................................................................438
Sample Congurations.................................................................................................................................................. 439
25 Link Aggregation Control Protocol (LACP).............................................................................................. 442
Introduction to Dynamic LAGs and LACP...................................................................................................................442
Important Points to Remember..............................................................................................................................442
LACP Modes............................................................................................................................................................ 443
Conguring LACP Commands............................................................................................................................... 443
LACP Conguration Tasks............................................................................................................................................ 444
Creating a LAG.........................................................................................................................................................444
Conguring the LAG Interfaces as Dynamic........................................................................................................ 444
Setting the LACP Long Timeout............................................................................................................................445
Monitoring and Debugging LACP..........................................................................................................................445
Shared LAG State Tracking.......................................................................................................................................... 446
Conguring Shared LAG State Tracking............................................................................................................... 446
Important Points about Shared LAG State Tracking........................................................................................... 447
LACP Basic Conguration Example.............................................................................................................................448
Congure a LAG on ALPHA................................................................................................................................... 448
26 Layer 2.....................................................................................................................................................457
Manage the MAC Address Table................................................................................................................................. 457
Clearing the MAC Address Table........................................................................................................................... 457
Setting the Aging Time for Dynamic Entries........................................................................................................ 457
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Contents