[c-nsp] NXOS BFD sends packets sourced and destined for it's own IP address to the remote host.

[Drew Weaver]

Howdy,

Sorry for the noise but I have run into a little confusion surrounding how NXOS does BFD.

I noticed that BFD wasn't establishing between two switches while there was an iACL attached to an interface and when I checked into the traffic that was getting blocked I noticed this:

Acl: %ACL-6-IPACCESS: list TESTv4 Vlan1061 denied udp 192.168.1.194(49254) -> 192.168.1.194(3785)
Acl: %ACL-6-IPACCESS: list TESTv4 Vlan1061 denied udp 192.168.1.194(49254) -> 192.168.1.194(3785)

Does anyone know why if NXOS is trying to communicate with itself it would try to accomplish this by sending the traffic through the remote device?

I can really easily resolve this by just adding another line to the ACL but I would much rather understand how this traffic is ending up on the wire in the first place.

Thanks,
-Drew