Concept Guide

Introduction to Dynamic LAGs and LACP................................................................................................................... 521
Important Points to Remember.............................................................................................................................. 521
LACP Modes............................................................................................................................................................ 522
Conguring LACP Commands............................................................................................................................... 522
LACP Conguration Tasks............................................................................................................................................ 523
Creating a LAG.........................................................................................................................................................523
Conguring the LAG Interfaces as Dynamic........................................................................................................ 523
Setting the LACP Long Timeout............................................................................................................................524
Monitoring and Debugging LACP.......................................................................................................................... 524
Shared LAG State Tracking.......................................................................................................................................... 525
Conguring Shared LAG State Tracking...............................................................................................................525
Important Points about Shared LAG State Tracking........................................................................................... 527
LACP Basic Conguration Example.............................................................................................................................527
Congure a LAG on ALPHA....................................................................................................................................527
28 Layer 2.....................................................................................................................................................536
Manage the MAC Address Table................................................................................................................................. 536
Clearing the MAC Address Table........................................................................................................................... 536
Setting the Aging Time for Dynamic Entries........................................................................................................536
Conguring a Static MAC Address........................................................................................................................537
Displaying the MAC Address Table........................................................................................................................ 537
MAC Learning Limit....................................................................................................................................................... 537
Setting the MAC Learning Limit............................................................................................................................ 538
mac learning-limit Dynamic.................................................................................................................................... 538
mac learning-limit mac-address-sticky................................................................................................................. 538
mac learning-limit station-move............................................................................................................................ 539
mac learning-limit no-station-move...................................................................................................................... 539
Learning Limit Violation Actions.............................................................................................................................539
Setting Station Move Violation Actions................................................................................................................ 540
Recovering from Learning Limit and Station Move Violations...........................................................................540
Enabling port security.............................................................................................................................................. 541
NIC Teaming....................................................................................................................................................................541
Congure Redundant Pairs...........................................................................................................................................542
Important Points about Conguring Redundant Pairs........................................................................................ 544
Far-End Failure Detection.............................................................................................................................................545
FEFD State Changes...............................................................................................................................................546
Conguring FEFD.................................................................................................................................................... 547
Enabling FEFD on an Interface...............................................................................................................................547
Debugging FEFD......................................................................................................................................................548
29 Link Layer Discovery Protocol (LLDP)..................................................................................................... 550
802.1AB (LLDP) Overview........................................................................................................................................... 550
Protocol Data Units.................................................................................................................................................550
Optional TLVs..................................................................................................................................................................551
Management TLVs................................................................................................................................................... 551
TIA-1057 (LLDP-MED) Overview................................................................................................................................ 553
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Contents