Symptom

Customer is seen ARP incomplete issue for remove phone. Debugs collected from customer switch point to SISF issue where there is inconsistency between LISP address resolution and SISF.

Conditions

L2 extension with phone clients

Workaround

1. For the SISF policy in effect on the port over which the host with the IP address missing from the LISP AR table, extend the reachable-lifetime. Side effect: detection of lost connection to hosts would be delayed. 2. For the IP address of a host that are connected over a stable port (for example wired), install a device-tracking static entry.

Further Problem Description