Will proxy-arp fix this incorrectly subnetted network?

I inherited a network where the subnets are setup incorrectly; in so far as I have subnets inside a 172.16/24 network that are netmasked to be physically local but are, in fact, served by remote routers.

E.g.:

172.16.1.0/24 is local 172.16.26.0/24 is remote

The two networks are connected by a 2610 at my local end and a 3725 at the remote end. I would like machines at both ends of the network to be able to talk to each other; and I would like to do this without adding static routes, changing IP addresses or changing netmasks.

Can I do this by enabling 'proxy-arp' on the LAN ports of each router in question? I only wish to pass regular traffic over this link, I'm not interested in doing DHCP or anything (so no need for 'ip helper-address'). This thread kind of spills over from here:

Suggestions? TIA and HAND!

Chris

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Posted 5 years ago by Chris in Cisco Systems

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