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exceptionroutesrangeipcisco

Cisco : How to route a single server IP which is already in a routed nerwork

Just a simple question, it is possible to route a single IP to the default route when this IP is in a range that is already routed.

I have to route this whole range to a certain IP : 10.0.0.0/8 This range goes from 10.0.0.1 to 10.255.255.254

The fact is that we are connected trough a VPN to a server with the IP 10.173.90.171.

Can I make my switch route every IP on the range 10.0.0.0/8 except the single IP 10.173.90.171 and make it go to the default route ?

Many Thanks,

Solution

  • It is possible. You just need to add this specific prefix and point it to the desired gateway. In basic IP networks, routing decision is always performed on most specific entry (10.173.90.171/32). This way you can have 10.0.0.0/8 routed via 192.168.0.1 and then 10.173.90.171/32 routed via 172.16.0.1.