[afnog] Cisco 1605-R Router problem !

[Brian Candler]

On Fri, Oct 22, 2004 at 10:47:00AM +0200, Alamicha Chapuma wrote:
> The sites which loose connectivity are the Breezcom ones.  They are on a
> 172.16.1.x   network while the others are on a 172.30.x.x network.

Does that mean you are overlaying two IP ranges on the same physical network
(the Cisco has 'ip address 172.16.1.1' and 'ip address 172.30.1.1
secondary')?

Or are the wireless access points also routers, and the Cisco has static
routes to your clients, with the access points as the next hop?

In the first case, your Cisco ARP cache will contain the IP addresses of
each of the clients. In the second, your Cisco ARP cache will contain only
the IP addresses of the wireless access points.

> Some one has suggested ip route-cache on the problem interface.  We will be
> looking into this.

That's possible (I include that under category "router software bug"). I've
seen strange problems with CEF and the like several years ago, but I thought
it worked more or less these days.

Rgds,

Brian.