Solved: DHCP for LAN and WLAN

Carsten Radke · ‎02-01-2009

My problem is to get an IP with the WLAN-Clients. They could connect but didn't become a dhcp-lease.

I've looked in all the other posts for dhcp, but couldnt locate my problem.

Any help is welcome. Config is attached.

Leo Laohoo · ‎02-02-2009

So if the wireless clients get associated to the AP and they do not get a valid IP Address (range of 192.168.10.200 to 192.168.10.210), what IP Address(es) are they getting?

If they are not getting the default 169.x.x.x IP Address then there could be a DHCP server nearby? If the answer is yes (that they are getting a valid IP Address from a nearby DHCP Server), IP Helper Address?

View solution in original post

Leo Laohoo · ‎02-01-2009

So the clients get associated to the wireless AP but can't get ip addresses from 192.168.10.200 to 192.168.10.210?

Carsten Radke · ‎02-01-2009

thats right

Leo Laohoo · ‎02-02-2009

So if the wireless clients get associated to the AP and they do not get a valid IP Address (range of 192.168.10.200 to 192.168.10.210), what IP Address(es) are they getting?

If they are not getting the default 169.x.x.x IP Address then there could be a DHCP server nearby? If the answer is yes (that they are getting a valid IP Address from a nearby DHCP Server), IP Helper Address?

Carsten Radke · ‎02-03-2009

The Client doesn't get an IP and the only dhcp server is on the router.

Could it be that i've to diable the ip inspect ?

Carsten

Carsten Radke · ‎02-02-2009

Could it be that my problem is thatt I use the 12.4.(20)T1 ?

I found : http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=Security&topic=Firewalling&topicID=.ee6e1fa&fromOutline=&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.2cc19d50

but I don't understand where to fix my problem.

arthurbutt · ‎02-04-2009

Hi,

I am having the same issue with a new 1231 AP. It gets a windows (local) IP of 169.x.x.x.

jeff.kish · ‎02-05-2009

Try adding the bridge-group 1 command to your Dot11Radio0.1 subinterface. I've seen this problem before and it generally relates to bridge-groups.

Carsten Radke · ‎02-05-2009

Thats was the problem, thanks jeff.

I changed the config in:

interface Dot11Radio0

no ip address

!

encryption vlan 1 mode ciphers tkip

!

broadcast-key vlan 1 change 45

!

ssid Carsten

!

speed basic-1.0 basic-2.0 basic-5.5 6.0 9.0 basic-11.0 12.0 18.0 24.0 36.0 48.0 54.0

channel 2462

station-role root

rts threshold 2312

no cdp enable

!

interface Dot11Radio0.1

encapsulation dot1Q 1 native

no cdp enable

bridge-group 1

bridge-group 1 subscriber-loop-control

bridge-group 1 spanning-disabled

bridge-group 1 block-unknown-source

no bridge-group 1 source-learning

no bridge-group 1 unicast-flooding

and its working fine.