[CentOS] Multiple Internet facing Nics - Gateway issue

Thu Jul 2 04:55:59 UTC 2009
Christopher Chan <christopher.chan at bradbury.edu.hk>

Doug Coats wrote:
> I am not understanding somethings very fundamental to me 
> troubleshooting this issue. 
>  
> How do I clear the iproute2's that I have created?

They are cleared by being deleted or a reboot takes place.

Try 'ip route help' and 'ip rule help'

>  
> How do I tell if they are in affect?

Now that is a good one...ping/telnet tests from another host...

>  
> What should they look like when listed if they are configured properly?
Here is my output from ip rule list

0:    from all lookup local
32764:    from 203.174.45.30 lookup wharf
32765:    from 220.232.217.78 lookup pacific
32766:    from all lookup main
32767:    from all lookup default

Lower numbers mean higher priority.

Routing tables:

ip route list table wharf:
203.174.45.24/29 dev eth2  proto kernel  scope link  src 203.174.45.30
10.9.0.0/17 dev eth1  proto kernel  scope link  src 10.9.1.101
default via 203.174.45.25 dev eth2

ip route list table pacific
220.232.217.72/29 dev eth0  proto kernel  scope link  src 220.232.217.78
10.9.0.0/17 dev eth1  proto kernel  scope link  src 10.9.1.101
default via 220.232.217.73 dev eth0

ip route list will give you your main routing table which is the same 
one that route -n will report