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Steering subnet traffic in OSPF

steering_subnets.gif

Internal network uses OSPF to include inside interface of ASA 5585X firewall.

The ASA has a static route 0.0.0.0 /0 pointing to the edge router which is also redistributed into OSPF.

The edge router has a static route 192.168.0.0 /22 pointing to the ASA.

A new firewall has been installed in the network with it's inside interface participating in OSPF.

On the edge router a more specific route, 192.168.X.0 /24, can be added that points to the new firewall.

On the new firewall a static route 0.0.0.0 /0 can be added that points to the edge router and NOT redistributed into OSPF.

Question: How best to steer particular 192.168.X.0 /24 subnet traffic out through the new firewall to the Internet?

1 REPLY 1
Geevarghese Cheria
Cisco Employee

Hi Thomas,

   Posting this url - https://supportforums.cisco.com/discussion/12916086/how-best-steer-particular-subnet-traffic-out-new-firewall for people who may visit this page.

Thanks and Regards,

Geevarghese

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