topic DHCP issue in Wireless

DHCP issue

dyunanda — Mon, 12 Feb 2024 08:18:22 GMT

We have setup WLC as showing in drawing below;

DHCP (10.133.139.0/24) on wlc, and this is working fine with DMLZ Area.

and we have issue when we want to add new segment in GBC area with segment 10.133.136.0/24. client in GBC tenant AP still get same ip addres with DMLZ area. 10.133.139.0/24 from DHCP in WLC (even we add new pool in WLC DHCP for 10.133.136.0/24 ). do you have any advise to solve this issue ? where to put DHCP ? may be other solution.

currently we have 3 network segment (10.133.139.0, 10.133.138.0 and 10.133.136.0 ) with same vlan210. we cannot change this VLAN configuration becuase client only give us 1 vlan for 3 segment above.

Regards

Re: DHCP issue

Rasika Nayanajith — Mon, 12 Feb 2024 12:00:51 GMT

Since all APs managed by same WLC and that WLC SVI for vlan 210 is in 10.133.139.0/24 range you always get IP address from same range. Without creating 3 SVI (vlans on WLC) I do no think you can solve it easily.

HTH
Rasika
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Re: DHCP issue

dyunanda — Tue, 13 Feb 2024 01:55:44 GMT

Hi Rasika,

Thank you for reply,

if we move DHCP server from WLC to windows server and put ip helper address in Client switch (10.133.136.252 and 139.252 ) and disable DHCP centeral . is it possible to solve it ? or please advise me if you have any?

it's really appreciated your help .

Regards

Re: DHCP issue

Rasika Nayanajith — Tue, 13 Feb 2024 12:08:46 GMT

I believe traffic is centrally switched. That is those APs are in local mode and traffic is tunnel to that WLC.

In that scenario, you have to have 3 dynamic interfaces on your WLC in order to assign users into 3 different subnets

HTH
Rasika
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