Owners Manual

Recovering from a Forgotten Password on the S4820T System......................................................78
Recovering from a Forgotten Enable Password on the S4820T.................................................79
Recovering from a Failed Start on the S4820T System.....................................................................80
Restoring the Factory Default Settings.............................................................................................. 80
S4820TMXL Switch....................................................................................................................... 80
Important Points to Remember................................................................................................... 80
Restoring Factory Default Environment Variables....................................................................... 81
5 802.1ag................................................................................................................. 83
Ethernet CFM...................................................................................................................................... 83
Maintenance Domains........................................................................................................................84
Maintenance Points............................................................................................................................ 84
Maintenance End Points..................................................................................................................... 85
Implementation Information..............................................................................................................86
Configuring the CFM.......................................................................................................................... 86
Related Configuration Tasks.........................................................................................................86
Enabling Ethernet CFM.......................................................................................................................86
Creating a Maintenance Domain....................................................................................................... 86
Creating a Maintenance Association..................................................................................................87
Create Maintenance Points.................................................................................................................87
Creating a Maintenance End Point...............................................................................................87
Creating a Maintenance Intermediate Point................................................................................88
Displaying the MP Databases........................................................................................................89
Continuity Check Messages............................................................................................................... 90
Enabling CCM................................................................................................................................ 91
Enabling Cross-Checking..............................................................................................................91
Sending Loopback Messages and Responses....................................................................................91
Sending Linktrace Messages and Responses.....................................................................................92
Caching Link Trace........................................................................................................................92
Enabling CFM SNMP Traps................................................................................................................. 93
Displaying Ethernet CFM Statistics..................................................................................................... 95
6 802.1X...................................................................................................................96
The Port-Authentication Process.......................................................................................................97
EAP over RADIUS...........................................................................................................................99
Configuring 802.1X............................................................................................................................. 99
Related Configuration Tasks.........................................................................................................99
Important Points to Remember....................................................................................................... 100
Enabling 802.1X................................................................................................................................ 100
Configuring Request Identity Re-Transmissions............................................................................. 102
Configuring a Quiet Period after a Failed Authentication......................................................... 102
Forcibly Authorizing or Unauthorizing a Port..................................................................................103