Concept Guide

29 Layer 2.................................................................................................................................................... 566
Manage the MAC Address Table................................................................................................................................. 566
Clearing the MAC Address Table...........................................................................................................................566
Setting the Aging Time for Dynamic Entries........................................................................................................566
Conguring a Static MAC Address........................................................................................................................567
Displaying the MAC Address Table........................................................................................................................ 567
MAC Learning Limit....................................................................................................................................................... 567
Setting the MAC Learning Limit............................................................................................................................ 568
mac learning-limit Dynamic.................................................................................................................................... 568
mac learning-limit mac-address-sticky................................................................................................................. 568
mac learning-limit station-move............................................................................................................................ 569
mac learning-limit no-station-move...................................................................................................................... 569
Learning Limit Violation Actions.............................................................................................................................569
Setting Station Move Violation Actions................................................................................................................569
Recovering from Learning Limit and Station Move Violations........................................................................... 570
Disabling MAC Address Learning on the System.................................................................................................570
Enabling port security.............................................................................................................................................. 571
NIC Teaming.................................................................................................................................................................... 571
Congure Redundant Pairs...........................................................................................................................................572
Important Points about Conguring Redundant Pairs.........................................................................................574
Far-End Failure Detection.............................................................................................................................................575
FEFD State Changes...............................................................................................................................................576
Conguring FEFD.....................................................................................................................................................577
Enabling FEFD on an Interface...............................................................................................................................577
Debugging FEFD......................................................................................................................................................578
30 Link Layer Discovery Protocol (LLDP)..................................................................................................... 580
802.1AB (LLDP) Overview........................................................................................................................................... 580
Protocol Data Units................................................................................................................................................. 580
Optional TLVs..................................................................................................................................................................581
Management TLVs................................................................................................................................................... 581
TIA-1057 (LLDP-MED) Overview................................................................................................................................ 583
TIA Organizationally Specic TLVs........................................................................................................................ 583
Congure LLDP..............................................................................................................................................................587
Related Conguration Tasks................................................................................................................................... 587
Important Points to Remember..............................................................................................................................587
LLDP Compatibility..................................................................................................................................................588
CONFIGURATION versus INTERFACE Congurations............................................................................................ 588
Enabling LLDP................................................................................................................................................................589
Disabling and Undoing LLDP..................................................................................................................................589
Enabling LLDP on Management Ports........................................................................................................................589
Disabling and Undoing LLDP on Management Ports..........................................................................................589
Advertising TLVs............................................................................................................................................................590
Storing and Viewing Unrecognized LLDP TLVs..........................................................................................................591
Reserved Unrecognized LLDP TLVs...................................................................................................................... 591
Contents
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