On Jan 24, 2013, at 7:01 PM, <vinny_abe...@dell.com> wrote: > Is there something that would prevent ARP from discovering these newly > added devices when the switch would be soliciting the network segment > for the MAC address for a certain IP? I was leaning towards bug... or I have > some unintended consequence due to the CoPP policy or rate-limiters on > these switches which are also the same.
Unfortunately yes. Packets hitting missing ARP adjacency need to go through CoPP to trigger the discovery. Test it yourself: Allow them explicitely in your policy and it's going to work. Configure the "mls rate-limit unicast cef glean" h/w rate-limiter. That way packets hitting missing ARP adjacencies will only be addressed to the rate-limiter and not to CoPP anymore. Don't understand why it's not kind of default. _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/