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...
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.