Concept Guide

27 Intermediate System to Intermediate System............................................................................................511
IS-IS Protocol Overview................................................................................................................................................. 511
IS-IS Addressing.............................................................................................................................................................. 511
Multi-Topology IS-IS....................................................................................................................................................... 512
Transition Mode........................................................................................................................................................ 512
Interface Support..................................................................................................................................................... 513
Adjacencies................................................................................................................................................................513
Graceful Restart............................................................................................................................................................. 513
Timers........................................................................................................................................................................ 513
Implementation Information.......................................................................................................................................... 513
Conguration Information..............................................................................................................................................514
Conguration Tasks for IS-IS.................................................................................................................................. 515
Conguring the Distance of a Route.....................................................................................................................522
Changing the IS-Type.............................................................................................................................................. 523
Redistributing IPv4 Routes.....................................................................................................................................525
Redistributing IPv6 Routes.....................................................................................................................................526
Conguring Authentication Passwords................................................................................................................. 527
Setting the Overload Bit......................................................................................................................................... 527
Debugging IS-IS....................................................................................................................................................... 528
IS-IS Metric Styles.........................................................................................................................................................529
Congure Metric Values............................................................................................................................................... 529
Maximum Values in the Routing Table.................................................................................................................. 529
Change the IS-IS Metric Style in One Level Only................................................................................................529
Leaks from One Level to Another...........................................................................................................................531
Sample Congurations..................................................................................................................................................532
28 Link Aggregation Control Protocol (LACP).............................................................................................. 534
Introduction to Dynamic LAGs and LACP.................................................................................................................. 534
Important Points to Remember............................................................................................................................. 534
LACP Modes............................................................................................................................................................535
Conguring LACP Commands...............................................................................................................................535
LACP Conguration Tasks............................................................................................................................................536
Creating a LAG.........................................................................................................................................................536
Conguring the LAG Interfaces as Dynamic........................................................................................................536
Setting the LACP Long Timeout............................................................................................................................537
Monitoring and Debugging LACP.......................................................................................................................... 537
Shared LAG State Tracking.......................................................................................................................................... 538
Conguring Shared LAG State Tracking...............................................................................................................538
Important Points about Shared LAG State Tracking...........................................................................................540
LACP Basic Conguration Example............................................................................................................................ 540
Congure a LAG on ALPHA................................................................................................................................... 540
29 Layer 2.................................................................................................................................................... 549
Manage the MAC Address Table................................................................................................................................. 549
Clearing the MAC Address Table........................................................................................................................... 549
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Contents