Concept Guide

Setting the Aging Time for Dynamic Entries........................................................................................................540
Conguring a Static MAC Address........................................................................................................................ 541
Displaying the MAC Address Table.........................................................................................................................541
MAC Learning Limit........................................................................................................................................................541
Setting the MAC Learning Limit............................................................................................................................ 542
mac learning-limit Dynamic.....................................................................................................................................542
mac learning-limit mac-address-sticky................................................................................................................. 542
mac learning-limit station-move............................................................................................................................ 543
mac learning-limit no-station-move...................................................................................................................... 543
Learning Limit Violation Actions.............................................................................................................................543
Setting Station Move Violation Actions................................................................................................................ 544
Recovering from Learning Limit and Station Move Violations........................................................................... 544
Disabling MAC Address Learning on the System................................................................................................ 545
Enabling port security............................................................................................................................................. 545
NIC Teaming...................................................................................................................................................................545
Congure Redundant Pairs.......................................................................................................................................... 546
Important Points about Conguring Redundant Pairs........................................................................................ 548
Far-End Failure Detection.............................................................................................................................................549
FEFD State Changes.............................................................................................................................................. 550
Conguring FEFD.....................................................................................................................................................551
Enabling FEFD on an Interface............................................................................................................................... 551
Debugging FEFD......................................................................................................................................................552
29 Link Layer Discovery Protocol (LLDP)..................................................................................................... 554
802.1AB (LLDP) Overview............................................................................................................................................554
Protocol Data Units................................................................................................................................................. 554
Optional TLVs.................................................................................................................................................................555
Management TLVs.................................................................................................................................................. 555
TIA-1057 (LLDP-MED) Overview................................................................................................................................ 557
TIA Organizationally Specic TLVs........................................................................................................................ 557
Congure LLDP.............................................................................................................................................................. 561
Related Conguration Tasks....................................................................................................................................561
Important Points to Remember..............................................................................................................................561
LLDP Compatibility..................................................................................................................................................562
CONFIGURATION versus INTERFACE Congurations............................................................................................ 562
Enabling LLDP................................................................................................................................................................562
Disabling and Undoing LLDP..................................................................................................................................563
Advertising TLVs............................................................................................................................................................ 563
Viewing the LLDP Conguration................................................................................................................................. 564
Viewing Information Advertised by Adjacent LLDP Neighbors................................................................................564
Examples of Viewing Information Advertised by Neighbors.............................................................................. 565
Conguring LLDPDU Intervals.....................................................................................................................................566
Conguring Transmit and Receive Mode....................................................................................................................567
Conguring the Time to Live Value............................................................................................................................. 568
Debugging LLDP............................................................................................................................................................568
Relevant Management Objects................................................................................................................................... 569
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Contents