Why would we want to use multiple mobility groups?

[Mitrixsen]

Hello, everyone.

The title pretty much explains my question. Why would we want to assign our WLCs to different mobility groups?

Wouldn't it make more sense to use 1 for all of our WLCs so we can achieve seamless roaming everywhere?

Thank you.
David

[MHM Cisco World · Accepted solution]

Mobility meaning wifi client is roaming.

So each wlc group control clients roaming in same site.

This group exchange all clients info like authc method and it wlan spec

MHM

[M02@rt37 · Accepted solution]

Hello @Mitrixsen 

By using diferent mobility group, you create a roaming boundary. If a client roams to an AP on a different mobility group, it must reassociate and reauthenticate — which can be intentional.

Also, the way to put WLC on a separate mobility group, this lets you test new firmware, configurations, or AP join behavior without impacting production roaming.

[Rich R · Accepted solution]

Just to add to the previous answers ... also consider scaling.  Mobility domains share a lot of client data between WLCs.  Too many WLCs/clients is not going to scale well.