Concept Guide

Manage the MAC Address Table.................................................................................................................................. 512
Clearing the MAC Address Table............................................................................................................................512
Setting the Aging Time for Dynamic Entries.........................................................................................................512
Conguring a Static MAC Address.........................................................................................................................513
Displaying the MAC Address Table.........................................................................................................................513
MAC Learning Limit........................................................................................................................................................513
Setting the MAC Learning Limit............................................................................................................................. 514
mac learning-limit Dynamic..................................................................................................................................... 514
mac learning-limit mac-address-sticky.................................................................................................................. 514
mac learning-limit station-move............................................................................................................................. 515
mac learning-limit no-station-move....................................................................................................................... 515
Learning Limit Violation Actions..............................................................................................................................515
Setting Station Move Violation Actions.................................................................................................................516
Recovering from Learning Limit and Station Move Violations............................................................................516
Disabling MAC Address Learning on the System..................................................................................................517
Enabling port security.............................................................................................................................................. 517
NIC Teaming.................................................................................................................................................................... 517
Congure Redundant Pairs........................................................................................................................................... 518
Important Points about Conguring Redundant Pairs........................................................................................ 520
Far-End Failure Detection..............................................................................................................................................521
FEFD State Changes...............................................................................................................................................522
Conguring FEFD.................................................................................................................................................... 523
Enabling FEFD on an Interface...............................................................................................................................524
Debugging FEFD......................................................................................................................................................525
26 Link Layer Discovery Protocol (LLDP)..................................................................................................... 526
802.1AB (LLDP) Overview............................................................................................................................................526
Protocol Data Units................................................................................................................................................. 526
Optional TLVs................................................................................................................................................................. 527
Management TLVs...................................................................................................................................................527
TIA-1057 (LLDP-MED) Overview................................................................................................................................ 529
TIA Organizationally Specic TLVs........................................................................................................................ 529
Congure LLDP..............................................................................................................................................................533
Related Conguration Tasks...................................................................................................................................533
Important Points to Remember............................................................................................................................. 533
LLDP Compatibility..................................................................................................................................................534
CONFIGURATION versus INTERFACE Congurations............................................................................................ 534
Enabling LLDP................................................................................................................................................................534
Disabling and Undoing LLDP..................................................................................................................................535
Enabling LLDP on Management Ports........................................................................................................................535
Disabling and Undoing LLDP on Management Ports..........................................................................................535
Advertising TLVs............................................................................................................................................................535
Storing and Viewing Unrecognized LLDP TLVs......................................................................................................... 537
Reserved Unrecognized LLDP TLVs......................................................................................................................537
Organizational Specic Unrecognized LLDP TLVs.............................................................................................. 537
Viewing Unrecognized LLDP TLVs........................................................................................................................ 537
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Contents