New subnet cant connect to the Internet

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Mar 20th, 2006
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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: -

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pkhatri Mon, 03/20/2006 - 18:08
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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.


CSCO10881970 Wed, 03/22/2006 - 18:08
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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 - /27 to - /28. How could this be done in order for my router to accomodate at least 30 hosts.

pkhatri Wed, 03/22/2006 - 18:12
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Can you confirm that the ISP has allocated you the /27 block and is routing it back to you ?


simonstoll Thu, 03/23/2006 - 02:09
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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 :-)


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