On 02/01/2012 02:03 PM, Nick wrote:
> Hi,
>
> I'm wanting to configure a CentOS 6 server to have a fall-back default route via
> a second network interface.
>
> Given:
>
> - eth0 with 192.168.0.10 on subnet 192.168.0.0/24 gateway 192.168.0.1
> - eth1 with 192.168.1.10 on subnet 192.168.1.0/24 gateway 192.168.1.1
>
> Where eth0's network is a "back door" to the internet, and eth1's is the "front
> door", I believe I can configure the routing table manually like this:
>
> ip route default scope global \
> nexthop via 192.168.1.1 dev eth1 weight 1 \
> nexthop via 192.168.0.1 dev eth0 weight 2
>
> However, I've re-read the RHEL6 documents for configuring static routes here:
>
>
> http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/s1-networkscripts-static-routes.html
>
> This kind of thing doesn't seem to fit into the scheme of
> /etc/sysconfig/network-scripts/route-eth? described there, since the route isn't
> "for" any single interface. Is there a "RHEL/CentOS" way to do this, or do I
> need to resort to some sort of script containing the above ip route command
> inserted somewhere?
>
> And how do I stop CentOS from trying to pick its own default gateway settings
> (since /etc/sysconfig/network likely won't have a GATEWAY parameter)?
>
>
Hmm...
I just tried this and besides needing ip route "add" default
It does not seem to work when I unplug the cable on my primary link.
--
Stephen Clark
*NetWolves*
Director of Technology
Phone: 813-579-3200
Fax: 813-882-0209
Email: steve.clark@xxxxxxxxxxxxx
http://www.netwolves.com
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