Administrator Guide

24 Intermediate System to Intermediate System............................................................................437
IS-IS Protocol Overview................................................................................................................................................... 437
IS-IS Addressing................................................................................................................................................................ 437
Multi-Topology IS-IS......................................................................................................................................................... 438
Transition Mode...........................................................................................................................................................438
Interface Support........................................................................................................................................................ 438
Adjacencies...................................................................................................................................................................438
Graceful Restart................................................................................................................................................................439
Timers........................................................................................................................................................................... 439
Implementation Information.............................................................................................................................................439
Configuration Information................................................................................................................................................ 440
Configuration Tasks for IS-IS.....................................................................................................................................440
Configuring the Distance of a Route.........................................................................................................................447
Changing the IS-Type................................................................................................................................................. 447
Redistributing IPv4 Routes.........................................................................................................................................449
Redistributing IPv6 Routes........................................................................................................................................ 450
Configuring Authentication Passwords....................................................................................................................450
Setting the Overload Bit..............................................................................................................................................451
Debugging IS-IS............................................................................................................................................................451
IS-IS Metric Styles............................................................................................................................................................ 452
Configure Metric Values...................................................................................................................................................452
Maximum Values in the Routing Table..................................................................................................................... 452
Change the IS-IS Metric Style in One Level Only................................................................................................... 452
Leaks from One Level to Another............................................................................................................................. 454
Sample Configurations......................................................................................................................................................454
25 In-Service Software Upgrade...................................................................................................457
ISSU Introduction.............................................................................................................................................................. 457
Fastboot 2.0 (Zero Loss Upgrade)................................................................................................................................. 457
L2 ISSU...............................................................................................................................................................................457
L3 ISSU...............................................................................................................................................................................458
CoPP...................................................................................................................................................................................458
Mirroring flow control packets........................................................................................................................................ 459
PFC..................................................................................................................................................................................... 459
QoS..................................................................................................................................................................................... 459
Tunnel Configuration........................................................................................................................................................ 459
26 Link Aggregation Control Protocol (LACP)................................................................................460
Introduction to Dynamic LAGs and LACP......................................................................................................................460
Important Points to Remember.................................................................................................................................460
LACP Modes................................................................................................................................................................460
Configuring LACP Commands....................................................................................................................................461
LACP Configuration Tasks................................................................................................................................................461
Creating a LAG............................................................................................................................................................. 461
Configuring the LAG Interfaces as Dynamic............................................................................................................462
Setting the LACP Long Timeout............................................................................................................................... 462
Monitoring and Debugging LACP..............................................................................................................................463
Shared LAG State Tracking............................................................................................................................................. 463
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