After tcpdumping on the switch I can verify the switch is receiving the ARP replies but is not accepting them for some reason. UPDATE:Turns out that there was a mismatch on one of the port-channels of the VLT. As soon as I fixed the mismatch on S4810-2 the switch was able to receive the traffic successfully! Long story short, in case of any issues, remember to check sh vlt mismatch :)
Hello, my topology is following: A <-> S4810-1 <======VLTi======> S4810-2 <-> B              \==VLT-HeartBeat=/ For some reason I'm seeing flakey connectivity with S4810-2's control plane when traffic traverses the VLTi link. For sake of simplicity A,B are configured as access ports to management VLAN: If I look at tcpdump I can see S4810-2 doing ARP resolves of A but it seems replies aren't reaching S4810-2 at all as shown by Protocol    Address         Age(min)  Hardware Address    Interface  VLAN             CPU-----------------------------------------------------------------------------------------Internet    10.0.50.31            -   00:01:e8:8b:3d:75      -       Vl 50            CPInternet    10.0.0.1              -   00:01:e8:8b:3d:75   Te 0/1      -               CPInternet    10.0.0.2             69   00:01:e8:8b:35:02   Te 0/1      -               CP10.0.0.1,2 are from VLT HB and ...50.31 is the management vlan. Have I hit a bug or am I doing something wrong? :)  Update: The issue was VLT port-channel mismatch between S4810-1 and A, port-channel was configured to S4810-2 as well and as soon as the mismatch was fixed. The issue got resolved.
Pair of S4810, cannot ping other switch through VLT link