[c-nsp] Quad Sup6t 6807, ARP issue.

[Nathan Lannine]

>
> We are seeing ARP packets being dropped within the VSS for some ARP
> packets. (We still have single connected sites to the VSS, hence the need
> for Quad Sup6T's)
> Some ARP requests are arriving on one chassis within the VSS, and are not
> being broadcast on the other chassis, resulting in the obvious
> communication loss.
> Manually adding the ARP entry statically to the problem system, and
> communication is restored.
>
> Anybody else on this list see this or have had experience of it?
>

We had a similar issue when we replaced some 6506E/Sup720s with
6807/Sup6Ts.  There was a behavior change made in the 2Ts and going forward
that required us to implement "platform mac address-table synchronize learn
layer3".

HTH

- N