How to extend my network by adding secondary IP to an Interface.

Unanswered Question
Jun 27th, 2008

Hi, Can anybody help me out with my problem explained below??

I have 2 separate networks being separated by a router (10.195.0.0/22 and 10.196.101.0/24).We have used all available IP's on one network ( that is 10.196.101.0/24)and i want to add a secondary IP(that is 10.196.201.0/24) to the same interface to expand the network.Now when i do that i cannot ping a device with an IP on the 10.196.201.0 network but i can only ping the gateway which is 10.196.201.254. I also i have access list on the 10.196.101.0 router, therefore a machine on 10.195.0.0/22 can only get into 10.196.101.0/24 network by granting that IP access using cisco's access lists control.

Kindly help me as after adding the secondary IP which is 10.196.201.254/24 to the same interface which has 10.196.101.254/24 IP address there is no communication between 10.196.101.0/24 and 10.196.201.0/24 networks.

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Kevin Dorrell Fri, 06/27/2008 - 04:29

Normally this should work. Could you post the configurations please? I suspect the problem is something to do with that access list, but I don't know for sure until I have seen the configs.

Try removing the access-group command temporarily to see if you get connectivity.

Kevin Dorrell

Luxembourg

augustineampiah Fri, 06/27/2008 - 08:25

Thanks Kevin, i will try removing the access lists as you suggested to see whether it will work since the link does down the first time i tried it,since it's a live network i can only do this very late in the night in other to reduce the down time for increased productivity. Thanks so much.

Regards,

Augustine Ampiah,Aspiring CCNP and CCIE.

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