00:24:55: %RPM0-P:CP %IFMGR-5-OSTATE_UP: Changed interface state to up: Te 3/42
00:24:55: %RPM0-P:CP %IFMGR-5-ACTIVE: Changed Vlan interface state to active: Vl 1
00:24:55: %RPM0-P:CP %IFMGR-5-STATE_STBY_ACT: Changed interface state from standby
to active:
Te 3/42
Dell(conf-if-te-3/41)#do show ip int brief | find 3/41
TenGigabitEthernet 3/41 unassigned NO Manual administratively down down
TenGigabitEthernet 3/42 unassigned YES Manual up up
[output omitted]
Example of Configuring Redundant Pairs on a Port-Channel
Dell#show interfaces port-channel brief
Codes: L - LACP Port-channel
LAG Mode Status Uptime Ports
1 L2 up 00:08:33 Te 1/1 (Up)
2 L2 up 00:00:02 Te 2/1 (Up)
Dell#configure
Dell(conf)#interface port-channel 1
Dell(conf-if-po-1)#switchport backup interface port-channel 2
Apr 9 00:15:13: %STKUNIT0-M:CP %IFMGR-5-L2BKUP_WARN: Do not run any Layer2
protocols on Po 1 and Po 2
Apr 9 00:15:13: %STKUNIT0-M:CP %IFMGR-5-OSTATE_DN: Changed interface state to
down: Po 2
Apr 9 00:15:13: %STKUNIT0-M:CP %IFMGR-5-STATE_ACT_STBY: Changed interface state to
standby: Po 2
Dell(conf-if-po-1)#
Dell#
Dell#show interfaces switchport backup
Interface Status Paired Interface Status
Port-channel 1 Active Port-chato mannel 2 Standby
Port-channel 2 Standby Port-channel 1 Active
Dell#
Dell(conf-if-po-1)#switchport backup interface tengigabitethernet 1/2
Apr 9 00:16:29: %STKUNIT0-M:CP %IFMGR-5-L2BKUP_WARN: Do not run any Layer2
protocols on Po 1 and Te 1/2
Dell(conf-if-po-1)#
Far-End Failure Detection
Far-end failure detection (FEFD) is a protocol that senses remote data link errors in a network. FEFD responds
by sending a unidirectional report that triggers an echoed response after a specified time interval. You can
Layer 2 607
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