As usual, when I have some time off, I tinker with my network and tend to break something.
I decided that I could let my wireless router rest a bit by turning off its gateway functionality, thereby accepting it into my LAN and telling it not to treat the other side like the wilds of the Internet. This means it wasn’t translating addresses for me anymore. No NAT.
This is all well and good, but now the network on the other side of that wireless router needs to be known to my central Linux router. Hmmm!
So, I typed in
sudo /<span>sbin</span>/ip route add 172.30.19.0/30 via 172.30.100.2 dev eth2
where 172.30.19.0 is the wireless network and 172.30.100.0 is the tiny (2 connection) network between the Linux router and the wireless router.
This made things work great, but I wondered how to ensure that this route was added at each reboot.
In CentOS 3, this information is stored in the /etc/sysconfig/static-routes file like so:
any net 172.30.19.0 netmask 255.255.255.252 gw 172.30.100.2 dev eth2
This syntax is used by the
/sbin/route
command.
Well, off to bed.