We have two different subnets separated by a router. Trouble is company has an old router, 2620 doesn't support VLAN's, so I just implemented two different subnet ranges, and secondary address on our one horse one ethernet port router, lol. Now clients are getting IP's from the wrong DHCP server. Origianlly I thought it might be DHCP relay enabled on the router, turned it off. But if a client doesnt have an IP address, the servers or the router wouldn't know to which subnet it belongs. Is there a way out without upgrading router to support vlans? I know assigning vlans to ports would eliminate this problem.
So I take it you put the secondary address on to support the other network? That would work, but I believe your DHCP requests will always answer on the 172 network. You really, if you can, need to create subinterfaces and use vlans to separate these. You then can create ACL's on the router to restrict traffic between the networks if you don't want them to see each other.
I may be way off regarding what you're trying to do though. :-)
Yes, I put the secondary address on to route internet traffic from the second subnet to the internet. I agree VLans would be the way to go, but the router is old and doesn't support 802.1Q. What determines which dhcp service will answer which request?
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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