topic Re: default gateway usage in Operating System - Tru64 Unix

default gateway usage

Neil Hoare — Mon, 09 Jun 2003 09:24:21 GMT

I have a default gateway defined in my routing tables, however it appears not to be used. If I try to contact a remote address not elsewhere defined in the routing table, then this is unsuccessful - howver if i "force" a route to the remote address, via the default gateway, then this works OK. So is it possible to "turn off" the route to default, even though it is still in the routing table?
Any ideas?
v4.0F pk7

Cheers

Neil

Re: default gateway usage

rachel_11 — Mon, 09 Jun 2003 10:56:19 GMT

Hello Neil,

It might be a result of icmp redirect.

How is your
netstat -rn

If you have dynamic routes and you want to prevent them, you can change the value of
icmp_rejectcodemask

Regards,
Rachel

Re: default gateway usage

Caesar_3 — Fri, 13 Jun 2003 15:47:05 GMT

Hello!

Try "route delete "
The parameter is from the netstat -rn

Caesar

Re: default gateway usage

Ralf Puchner — Mon, 16 Jun 2003 05:08:11 GMT

First check your /etc/routes file. Is the gateway accessable? If there is no default entry in the file the route was pronounced by an icmp redirect. If you start a routing daemon like routed or gated it will purge invalid routes after a short period of time.

Re: default gateway usage

Ralf Puchner — Mon, 16 Jun 2003 05:10:46 GMT

PS: use traceroute to check the path to destination. Please give us the output of netstat -rn, the destination and the source adress of the machine for investigation.

Re: default gateway usage

Neil Hoare — Fri, 20 Jun 2003 06:57:46 GMT

Thanks for the replies, I wish I'd got the netstat output earlier, as the machine has been re-booted and the problem cleared - which is no good for me if it re-occurs.

It's best to close this thread due to lack of evidence.

Cheers

Neil