Problem ip route

Unanswered Question
Mar 4th, 2009

I have the next configuration in router R1

Router R1:

----------

inte fas0/1

ip address 172.20.10.202 255.255.255.248

int fas 0/0

ip address 172.17.240.1 255.255.255.0

ip route 0.0.0.0 0.0.0.0 fas0/1

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Router r1 connect with other router r2, i don't have the configuration of router r2.

I can do ping to r2 172.20.10.201 in router r2, since router r1, but pc in net 172.17.240.0/24 can't do ping to r2 172.20.10.201

The connection is:

pc-----fe0/0-r1-fe0/1------r2

I need to do any configuration additional in r1

I have this problem too.
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Edison Ortiz Wed, 03/04/2009 - 06:50

No, you don't need any additional configuration on Router 1.

Router 1 has a default route towards R2. All packets from Router 1 will go to R2.

The problem is R2 does not have any routing information back to R1.

ip route 172.17.240.0 255.255.255.0 172.20.10.202 on R2 will fix the problem.

HTH,

__

Edison.

Jon Marshall Wed, 03/04/2009 - 06:52

"I need to do any configuration additional in r1"

No, you need a route added to R2 for 172.17.240.0/24 pointing back to R1.

Or you could use NAT if you can't access R2 ie. On R1

int fa0/0

ip nat inside

int fa0/1

ip nat outside

access-list 101 permit ip 172.17.240.0 0.0.0.255 host 172.20.10.202

ip nat inside source list 101 interface fa0/1 overload

Jon

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