Different default routes for Vlans

Unanswered Question
Oct 6th, 2009

We have a couple of Vlans on this 4507 switch.

The default route(internet traffic) is pointed towards a cisco 1841 for all Vlan's, which is the internet router.

We have an ASA connected to 4507 switch, now we want a particular VLAN's Internet traffic to go through the ASA and the reset to go through the 1841.

How to go about this can you please suggest.

I have this problem too.
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johnbroadway Tue, 10/06/2009 - 04:22

I would investigate implementing some sort of policy based routing based upon source IP addresses.

Not sure of your exact hardware but thats a good place to start!

Hope that helps


Richard Burts Tue, 10/06/2009 - 04:30

The obvious solution for your requirement to send traffic from a particular VLAN to the ASA while the rest of the traffic goes through the 1841 is to use Policy Based Routing. PBR allows you to specify different routing for particular traffic which you identify in a route map. Unfortunately when I look in the command reference for the 4500 switches I do not find either ip policy or route-map as supported commands. So it does not look like you can do this on the 4507. Perhaps it is possible to configure PBR on the 1841 and to redirect the traffic to the ASA from the 1841.




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