Finding AP DHCP Server

Unanswered Question
Sep 12th, 2008

Is there a way to find the dhcp server the AP gets dhcp from? lightweight AP with wlc 4402

I'm unable to find where it is on our network

I have this problem too.
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Scott Fella Fri, 09/12/2008 - 12:15

Did someone bring in a router from home that hands out dhcp? What you can try to do is obtain an ip address and then look at the default gateway and find the mac address by looking at the arp table. You can then do a show mac-address-table | in and then keep tracing it to the other switches until you find where it is originating from.

You can also setup dhcp snooping and shut that down.

thompso7540 Fri, 09/12/2008 - 12:17

i plugged into the vlan that is handing those out and i couldn't get an IP, so i'm unable to see where it's coming from

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