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Help with a 2504WLC

Rory Hamaker
Level 1
Level 1

Guys and Girls, I am stumped here and don't know where to look.  I have a 2504 that has port 1 plugged into a network (network A) using a 192 class C address scheme.  Port 1 plugs into a 3560 that is then distributed to the rest of the network.  I have a WLAN configured for this network and all is jiving like it should.  However, port 2 is plugged into the same 3560 on a different vlan that is a 172 class b network.  I have a dynamic interface defined for this port and assigned to a different WLAN.  The wlan that is assigned to port 2 will not get ip addresses.  i have deleted it and recreated it a thousand times, and followed the article here to the letter, but no avail.  

The infrastructure is as follows:

Cisco ASA 5506x, port 1 is the outside link, port 2 corresponds to the 192 network, and port 3 corresponds to the 172 network.  the 192 network has an internal windows DHCP server and the 172 network has dhcp hosted by the ASA.  All other non wireless clients are getting IP's on the 172 just fine, so i am fairly sure that it is a setting in the 2504.  I have included a running config from the WLC.  

1 Accepted Solution

Accepted Solutions

Scott Fella
Hall of Fame
Hall of Fame

You need to disable DHCP on the dynamic interface that uses the ASA.  If you have ip helpers or if the WLC interfaces are on the same subnet as the DHCP servers, then you can disable DHCP proxy globally. The ASA and other DHCP servers don't like DHCP being proxy.  Disabling that should fix your issue as that is known with ASA and DHCP proxy on the WLC.

-Scott

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-Scott
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View solution in original post

2 Replies 2

Scott Fella
Hall of Fame
Hall of Fame

You need to disable DHCP on the dynamic interface that uses the ASA.  If you have ip helpers or if the WLC interfaces are on the same subnet as the DHCP servers, then you can disable DHCP proxy globally. The ASA and other DHCP servers don't like DHCP being proxy.  Disabling that should fix your issue as that is known with ASA and DHCP proxy on the WLC.

-Scott

*** Please rate helpful posts ***

-Scott
*** Please rate helpful posts ***

You nailed it, that was it.  As soon as i turned the DHCP proxy to disabled, I immediately started to get IP's.  Thanks for the help and sorry for such a rookie mistake.

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