Administrator Guide

Leaks from One Level to Another............................................................................................................................. 437
Sample Configurations......................................................................................................................................................437
24 Link Aggregation Control Protocol (LACP)................................................................................440
Introduction to Dynamic LAGs and LACP......................................................................................................................440
Important Points to Remember.................................................................................................................................440
LACP Modes................................................................................................................................................................440
Configuring LACP Commands....................................................................................................................................441
LACP Configuration Tasks................................................................................................................................................441
Creating a LAG............................................................................................................................................................. 441
Configuring the LAG Interfaces as Dynamic............................................................................................................442
Setting the LACP Long Timeout............................................................................................................................... 442
Monitoring and Debugging LACP..............................................................................................................................443
Shared LAG State Tracking............................................................................................................................................. 443
Configuring Shared LAG State Tracking.................................................................................................................. 444
Important Points about Shared LAG State Tracking..............................................................................................445
LACP Basic Configuration Example................................................................................................................................445
Configure a LAG on ALPHA.......................................................................................................................................445
25 Layer 2.................................................................................................................................. 453
Manage the MAC Address Table.................................................................................................................................... 453
Clearing the MAC Address Table.............................................................................................................................. 453
Setting the Aging Time for Dynamic Entries............................................................................................................453
Configuring a Static MAC Address........................................................................................................................... 453
Displaying the MAC Address Table........................................................................................................................... 454
MAC Learning Limit.......................................................................................................................................................... 454
Setting the MAC Learning Limit................................................................................................................................454
mac learning-limit Dynamic........................................................................................................................................ 455
mac learning-limit mac-address-sticky.....................................................................................................................455
mac learning-limit station-move................................................................................................................................455
mac learning-limit no-station-move..........................................................................................................................455
Learning Limit Violation Actions................................................................................................................................ 456
Setting Station Move Violation Actions....................................................................................................................456
Recovering from Learning Limit and Station Move Violations.............................................................................. 456
Disabling MAC Address Learning on the System.................................................................................................... 457
Enabling port security................................................................................................................................................. 457
NIC Teaming...................................................................................................................................................................... 457
Configure Redundant Pairs..............................................................................................................................................458
Far-End Failure Detection.................................................................................................................................................461
FEFD State Changes................................................................................................................................................... 461
Configuring FEFD........................................................................................................................................................ 462
Enabling FEFD on an Interface.................................................................................................................................. 463
Debugging FEFD..........................................................................................................................................................464
26 Link Layer Discovery Protocol (LLDP)...................................................................................... 465
802.1AB (LLDP) Overview...............................................................................................................................................465
Protocol Data Units.....................................................................................................................................................465
Optional TLVs.................................................................................................................................................................... 466
Management TLVs......................................................................................................................................................466
Contents
15