DHCP for LAN and WLAN

Answered Question
Feb 1st, 2009
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<p>My problem is to get an IP with the WLAN-Clients. They could connect but didn't become a dhcp-lease.</p>

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

<p>Any help is welcome. Config is attached.</p>



Correct Answer by Leo Laohoo about 8 years 4 months ago

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?

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Leo Laohoo Sun, 02/01/2009 - 22:11
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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?

Correct Answer
Leo Laohoo Mon, 02/02/2009 - 13:05
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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 Tue, 02/03/2009 - 05:02
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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

arthurbutt Wed, 02/04/2009 - 05:33
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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 Thu, 02/05/2009 - 06:38
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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 Thu, 02/05/2009 - 08:37
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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.

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