Permenant Static Route and Static Route

[satvik.raval]

Lets assume we have a network 192.168.1.0/24 connected to R2. On R1 2 static routes are created as below. Also, link between R1 and R2 has failed.

ip route 192.168.1.2 255.255.255.255 f0/0 permanent

ip route 192.168.1.0 255.255.255.0 f0/1

If packets are destined to Server 1(S1) then, will the packets be discarded at R1 or will it be forwarded through R3?

[Harold Ritter · Accepted solution]

Hi @satvik.raval ,

The packets would be discarded at R1, as the static route will never get removed from the routing table, regardless if the interface is up or down. 

Regards,

[Giuseppe Larosa]

Hello @satvik.raval ,

you are relying on Proxy ARP to be enabled on R2 and R3 interfaces .

It would be better to specify IP next-hops the permanent keyword is an option that should not be used for reasons explained by Harold

Hope to help

Giuseppe

[paul driver]

Hello

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ip route 192.168.1.2 255.255.255.255 f0/0 permanent

ip route 192.168.1.0 255.255.255.0 f0/1

If packets are destined to Server 1(S1) then, will the packets be discarded at R1 or will it be forwarded through R3?

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As stated packets will be discarded due to the permanent statement applied to the r1-r2  longer host static route, Otherwise traffic would fail over via R3 if that wasnt applied as then that longer static host route would then be removed as/when its physcal interface goes down