Cisco Systems Default Route Question

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Subject Author Date
Default Route Question DerekB 09-04-07
Posted by DerekB on September 4, 2007, 3:32 pm
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I have a question that is probably quite simple, I've just never had
to do it. I have a Cisco device with multiple interfaces, and I want
them all to use the same default gateway except for one.

I have a default gateway set for 192.168.170.3.

I have a subnet that is 192.168.180.0. Any traffic from that interface
I would like to default to 192.168.155.100. The reason is that these
are both internet paths, and I would like the traffic from this subnet
to go through an extra firewall.

I'm used to just having one default gateway. What's the command to
send all this traffic out another path? The ACL's I'm used to all send
traffic that's going TO a certain place through a certain path. I'm
looking to send all traffic FROM a certain subnet through a path that
is not the default gateway.

Thanks!
-Derek


Posted by Trendkill on September 4, 2007, 3:49 pm
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> I have a question that is probably quite simple, I've just never had
> to do it. I have a Cisco device with multiple interfaces, and I want
> them all to use the same default gateway except for one.
>
> I have a default gateway set for 192.168.170.3.
>
> I have a subnet that is 192.168.180.0. Any traffic from that interface
> I would like to default to 192.168.155.100. The reason is that these
> are both internet paths, and I would like the traffic from this subnet
> to go through an extra firewall.
>
> I'm used to just having one default gateway. What's the command to
> send all this traffic out another path? The ACL's I'm used to all send
> traffic that's going TO a certain place through a certain path. I'm
> looking to send all traffic FROM a certain subnet through a path that
> is not the default gateway.
>
> Thanks!
> -Derek

You will be using policy-based routing. Here are some links:

http://www.cisco.com/warp/public/732/Tech/plicy_wp.htm

http://www.brainbuzz.com/articles/get-article.asp?aid=22

http://www.cisco.com/en/US/products/ps6599/products_white_paper09186a00800a4409.shtml


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