Cant ping IPs on one of the enclosure

[toolshed1]

Hi All,

I have 2 4506-E running in VSS config. They been up for multiple years without any issues. Out of nowhere one of the enclosures stopped processing IPs for devices that are plugged in into line card. I can list MAC addresses and i see number of packets increasing. Interfaces are up/up. If i move cable from the port to another enclosure in vss its working just fine. I did reload affected enclosure but that didnt solve the issue. Any ideas? Trunks are configured to allow vlans. Interfaces on both enclosure configured exactly the same.

Modules are not showing faulty status and redundancy is ok

[Mark Elsen]

 - Check if you can find anything in the logs , 

 M.

[toolshed1]

not seeing anything on the logs outside of just regular entries.

[toolshed1]

Can it be possible that Active SUP is not passing L3 traffic to standby enclosure for some reason?