We have a 4500-x in VSS pair setup as the core router. We have ToR switches connected to it using the trunk uplink interface.
The router is dropping the packets from 2x of connected vlans, but working for one of the vlan subnet.
And the flow command below shows router dropping them to null-0.
I see in the wireshark capture the echo-request and echo-reply in reverse direction is being received by the router, but router is dropping the packets. This is happening to all the packets associated with those subnets. (10.70.2.x and 10.70.3.x.) While the subnet 10.70.0.x is working all fine which is also going from the same port-channel on a different vlan.
Does it look like we are hitting a bug here??
hostname#sh flow monitor M-Flow-Test cache fo tab | i 3.10
10.70.3.10 10.250.6.171 0 0 0x00 Po11 Null 82 1 12:12:27.534 12:12:27.534 1 cisco unclassified
hostname#sh flow monitor M-Flow-Test cache fo tab | i 2.10
10.70.2.10 10.250.6.171 0 0 0x00 Po11 Null 82 1 12:12:44.534 12:12:44.534 1 cisco unclassified
hostname#sh flow monitor M-Flow-Test cache fo tab | i 0.10
10.70.0.10 10.250.6.171 0 0 0x00 Po11 Te1/1/1 410 5 12:14:47.530 12:14:51.526 1 cisco unclassified
