On Thu, 2006-03-30 at 22:10 -0800, jay shi wrote:
>
> here i want to use user my first internet
> connetion ( gateway 192.168.0.1) as a primary net .
> The simple script for this which i written is as
> follows
>
> wget -t 1 --timeout=4 --bind-address 192.168.0.80
^^^^^^^^^^^^^^^^^^^^^^^^^^^
Do you have mutiple NICs on your Linux box?
> http://< some ip >
>
> if
> [ -s /root/index.html ]
> then
> echo " Net is working"
> route del default
> route add default gw 192.168.0.1
> else
> echo " Net is down but it is up with anothe gw "
> route del default
> route add default gw 192.168.0.50
>
> fi
> rm -f /root/index.html
>
> here 192.168.0.80 is my server ip.My problem is
> by this script, when net started through primary
> gatway then i am not able to switch to my primary
> gateway ( 192.168.0.1).
When asking for such kind of help it is worthwhile to give a topology of
your network. An ASCII line art depiction would suffice.
Appears you have the router/modems to isp_pri and isp_sec on the same
subnet 192.168.0.x.
isp_pri_wan_peer is the ip on the ISP side of the link of isp_pri or
find out the ip of the "default" gw used by your router/modem on the WAN
port.
Define a route to isp_pri_wan_peer reachable through "host" 192.168.0.1
(your pri router/modem) - see man page for route). Now when you ping
isp_pri_wan_peer it will route thru your pri router 192.168.0.1. If the
ping response is success then you do nothing o/w switch to sec ISP. You
can poll this at whatever interval you decide.
HTH
--
Arun Khan
Linux is like a wigwam - no gates, no windows, apache inside
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