New subnet cant connect to the Internet

CSCO10881970 · ‎03-20-2006

Attach is my 2611 router startup configuration.

My problem comes when I use /27 to accommodate at least 30 hosts, I tried changing my e0/0 to be with the /27 instead of /28, I cant connect to the internet. What could be the problem with my subnet? How could I correct this in order for me to expand my IP address?

This is the subnet im planning to use:

202.78.103.64 202.78.103.65 - 202.78.103.94 202.78.103.95

pkhatri · ‎03-20-2006

Have you changed the subnet mask on your host devices ? If you have not done that yet, enter in the following command under interface Ethernet0/0:

interface Ethernet0/0

ip proxy-arp

That should fix your problem.

Hope that helps - pls rate the post if it does.

Paresh

CSCO10881970 · ‎03-22-2006

It still did not work, i tried removing the "no ip proxy-arp" from my startup config but still I cant connect to the net if I tried changing my subnet from 2 202.78.103.32=202.78.103.33 - 202.78.103.46= 202.78.103.47 /27 to

202.78.103.64=202.78.103.65 - 202.78.103.94= 202.78.103.95 /28. How could this be done in order for my router to accomodate at least 30 hosts.

pkhatri · ‎03-22-2006

Can you confirm that the ISP has allocated you the /27 block and is routing it back to you ?

Paresh

simonstoll · ‎03-23-2006

I agree with pkhatri, you should verify what your ISP is routing to you. You can not just change the adresse space without talking with your ISP :-)