network problem

[vti]

Hi all
I got a Tru64Unix test box ,it works normal but sometimes there is no connection between it's default router and the another router .it can ping everywhere else one of router interface and when i restart the Unix box everything back normal again.
When this problem happened i have tried to route flush and rcinet restart but nothing happens.
Any clue?

 

[GeorgeT]

Could you include some information about what's currently in the route table and the destination you're trying to reach? It might even be beneficial to run traceroute and see where the route has gone awry... Please note that "hosts" will respond to ICMP redirects and update their route tables accordingly (and never time them out). You may want to look into turning off ICMP redirects on the host's default gateway if it won't cause any harm to other devices...