Concept Guide

Sample Congurations.................................................................................................................................................. 446
24 Link Aggregation Control Protocol (LACP).............................................................................................. 448
Introduction to Dynamic LAGs and LACP.................................................................................................................. 448
Important Points to Remember............................................................................................................................. 448
LACP Modes............................................................................................................................................................ 449
Conguring LACP Commands............................................................................................................................... 449
LACP Conguration Tasks............................................................................................................................................450
Creating a LAG.........................................................................................................................................................450
Conguring the LAG Interfaces as Dynamic........................................................................................................450
Setting the LACP Long Timeout............................................................................................................................ 451
Monitoring and Debugging LACP...........................................................................................................................451
Shared LAG State Tracking.......................................................................................................................................... 452
Conguring Shared LAG State Tracking............................................................................................................... 452
Important Points about Shared LAG State Tracking........................................................................................... 454
LACP Basic Conguration Example............................................................................................................................ 454
Congure a LAG on ALPHA................................................................................................................................... 454
25 Layer 2.....................................................................................................................................................463
Manage the MAC Address Table................................................................................................................................. 463
Clearing the MAC Address Table........................................................................................................................... 463
Setting the Aging Time for Dynamic Entries........................................................................................................463
Conguring a Static MAC Address........................................................................................................................464
Displaying the MAC Address Table........................................................................................................................ 464
MAC Learning Limit.......................................................................................................................................................464
Setting the MAC Learning Limit............................................................................................................................ 465
mac learning-limit Dynamic.................................................................................................................................... 465
mac learning-limit mac-address-sticky................................................................................................................. 465
mac learning-limit station-move............................................................................................................................ 466
mac learning-limit no-station-move...................................................................................................................... 466
Learning Limit Violation Actions.............................................................................................................................466
Setting Station Move Violation Actions................................................................................................................ 467
Recovering from Learning Limit and Station Move Violations........................................................................... 467
Disabling MAC Address Learning on the System.................................................................................................468
Enabling port security............................................................................................................................................. 468
NIC Teaming................................................................................................................................................................... 468
Congure Redundant Pairs...........................................................................................................................................469
Important Points about Conguring Redundant Pairs......................................................................................... 471
Far-End Failure Detection............................................................................................................................................. 472
FEFD State Changes...............................................................................................................................................473
Conguring FEFD.....................................................................................................................................................474
Enabling FEFD on an Interface...............................................................................................................................474
Debugging FEFD......................................................................................................................................................475
26 Link Layer Discovery Protocol (LLDP)......................................................................................................477
802.1AB (LLDP) Overview............................................................................................................................................477
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Contents