Kannan,
Kindly check if there is any port active or assigned to the portchannel.
Default all the interfaces of fex.
Example:
Assuming this initial config:
feature lacp
feature vpc
vpc domain 1
peer-keepalive destination 1.1.1.1
feature fex fex 100
pinning max-links 1
description FEX0100 type "Nexus 2148T"
interface port-channel300 ! - this is the VPC going to the fex
switchport mode fex-fabric
vpc 300
fex associate 100
interface Ethernet1/39 ! - this is one of the physical
interfaces going to the fex
switchport mode fex-fabric
fex associate 100
channel-group 300
interface Ethernet1/40 ! - this is one of the physical interfaces going to the fex
switchport mode fex-fabric
fex associate 100
channel-group 300
Do this...
Nexus-5K(config)# no int port-channel 300
2013 June 12 12:06:48 Nexus-5K PFMA-2-FEX_STATUS Fex 100 is offline
2013 June 12 12:06:48 Nexus-5K NOHMS-2-NOHMS_ENV_FEX_OFFLINE FEX-100 Off-line (Serial Number JAF1309ABPG)
Nexus-5K(config)# int E1/39 - 40
Nexus-5K(config-if-range)# no switchport mode fex-fabric
Nexus-5K(config-if-range)# no fex associate 100
Nexus-5K(config-if-range)# exit
Nexus-5K(config)# no fex 100
HTH
REgards
Inayath
*Plz rate if this is helpfull.
