Cisco Nexus Switch 3172 Multiple Link Failure

[kevirami]

Hello all, 

I currently have a Cisco Nexus 3172 that was rebooted and link failures began to happen shortly after. 

ETH_PORT_CHANNEL-5-FOP_CHANGED: port-channel100: first operational port changed from Ethernet1/5 to none
%ETH_PORT_CHANNEL-5-PORT_DOWN: port-channel100: Ethernet1/5 is down
%ETHPORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: Interface port-channel100 is down (No operational members)
%ETHPORT-5-IF_BANDWIDTH_CHANGE: Interface port-channel100,bandwidth changed to 100000 Kbit
%ETHPORT-5-IF_DOWN_LINK_FAILURE: Interface Ethernet1/5 is down (Link failure)
%ETHPORT-5-IF_DOWN_PORT_CHANNEL_MEMBERS_DOWN: Interface port-channel100 is down (No operational members)

I have a PC connected directly connected to the switch. The switch cannot ping the PC. The PC can ping gateway on the switch and other IPs. 

Link lights come on the PC and Switch.
I have tried to set the interface 1/47 on the switch with the same speed and duplex matching. 
Speed 1000 duplex full and also AUTO for both with no luck. 
Cables have also been changed.

Any information would help!

[liviu.gheorghe]

Hello @kevirami ,

from the logs you provided it seems that port-channel100 has only one member, Ethernet1/5, and the member port changed state to down for some reason. For this reason, the port-channel interface also changed state to down.

Can you share the config of the port-channel100 interface and also the member(s) interfaces?

[MHM Cisco World]

Show port channel summary 

Show interface status 

Show lacp internal info interface x/x

Show lacp neighbor 

Share all of above 

MHM