topic If you are using FlexConnect in Wireless

WLC L3 Roaming Using FlexConnect

cnegrete — Mon, 05 Jul 2021 07:45:35 GMT

Hi everyone.

A customer has a network with several buildings (each with a different VLAN/subnet), and a single WLC.

The Access Points are grouped by AP groups, and on each building the clients are assigned to different VLANs.

There is one single SSID with the users connect to on the entire campus, and it assigns (as expected) different ip address segments depending on which building the users are connecting into.

The problem comes whenever a user is in a building and walks to another, since the buildings are not that far from each other, and the client machine is still connected to the network, it tries to roam but it doesn't know that it has to refresh its IP address.

I know there's something that is not working here, but I can't find documentation about this. Is this a supported configuration? Is this an expected behaviour? How can I fix this?

Thanks in advance for your help

If you are using FlexConnect

Rasika Nayanajith — Wed, 30 Apr 2014 20:38:16 GMT

If you are using FlexConnect Local switching, then L3 roaming is unsupported feature.

Here is some reference in the 7.6 configuration guide (see configuring FlexConnect section or page 926)

http://www.cisco.com/c/dam/en/us/td/docs/wireless/controller/7-6/configuration/guide/b_cg76.pdf

Here is another good reference about FlexConnect Design from a CiscoLive presentation.

BRKEWN-2016 - Architecting Network for Branch Offices with CUWN

As you can see on page 9, these are the advantages you get if you have a local WLC at your branch. L3 roaming is one

* Cookie cutter configuration for every branch site
* Layer-3 roaming within the branch
* WGB support
* Reliable Multicast (filtering)
* IPv6 L3 Mobility

HTH

Rasika

**** Pls rate all useful responses. Each time you rate a response Cisco will donate $1 to Kiva ****

Thanks, I kinda knew that, I

cnegrete — Wed, 28 May 2014 14:10:42 GMT

Thanks, I kinda knew that, I just wanted to reconfirm and ask if there was a way to force the client machines to ask for their ip address automatically.

Hello Rasika

Gunter — Wed, 31 May 2017 14:05:42 GMT

Hello Rasika

Do you know if the FlexConnect L3 roaming is possible now day? If it's possible then in which software version this feature was presented?

Regards