ip route delete default via xxx.xxx.xxx.xxx dev eth0
then
ip route add default via yyy.yyy.yyy.yyy dev eth0

replace xxx.xxx.xxx.xxx with your current router and yyy.yyy.yyy.yyy
with the new one

there is also an "ip route replace " syntax as well if you need it
see "man ip" for more details ;-)


On Wed, Dec 4, 2013 at 2:41 PM, ToddAndMargo <[log in to unmask]> wrote:
> Hi All,
>
> SL 6.5, 64 bit.
>
> I had to manually configure a Tread Net TEW-638PAP as a wireless
> bridge yesterday.  In the process, I had to change my default
> router (a.k.a. gateway) three times.  (Networking too, but
> that worked.) The TEW-638PAP was hooked to my second
> Ethernet port (eth1).
>
> Problem, I had to reboot to get the new default route to
> stick.
>
> Now I know of two places I can put my default router:
>
>    /etc/sysconfig/network     <--- where I put it
>    GATEWAY=192.168.10.100   and
>
>    /etc/sysconfig/network-scripts/ifcfg-eth1
>    GATEWAY=192.168.10.100
>
> I am using /etc/sysconfig/network and the "vi" method.
>
> To check my default router setting, I used "netstat -rn"
> and looked for the tags "UG".  (It is at the bottom of
> the list.)
>
> To try to get the new default router setting to take,
> I used:
>
>     service network restart; netstat -rn
> and
>     ifdown eth1; ifup eth1; netstat -rn
>
> No joy with either method.  Whatever gateway I had when
> I booted, was the one I was stuck with.  Reboot
> was the only way to make the change.  I even tried
> manually configuring it with "route".  No joy there
> either.  :'(
>
> What did I do wrong?
>
> Many thanks,
> -T
>
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Computers are like air conditioners.
> They malfunction when you open windows
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~