[c-nsp] 7507 and 5500 arp oddities

[James Saker]

Solution found to the 7507/5500 losing connected routes, though it's rather
embarrassing! As the saying goes: "When in doubt, check your assumptions." I
noticed the router almost wasn't behaving like a router:

- MPLS was functioning
- OSPF was functioning and exchanging routes
- Static routes were functioning
- Connected routes were getting lost. Would take 5 minutes or more to locate
a locally connected device, then proceed in losing it. Behavior was very
random. Subsequently, OSPF and static routes available past the connected
route remote device would be useless.

The solution: "ip routing" (apparently it got missed in this 7507's config -
talk about missing a basic). Indeed, the router didn't want to be one.

Thanks to all who provided some thoughts. The key clue was connected routes
failing while all else appeared to be normal.

Jamie Saker
Omaha NE