C9800 - default Mobility domain Vs mobility Group

[Charlie Grey]

what is the different btw these 2?

the controller, where/when should configure default domain or group?

confused.

[Flavio Miranda]

Hi

 You must configure both although they have almost the same function. Mobility group however, also play a role in redundancy.

"A mobility group is a set of controllers, identified by the same
mobility group name, that defines the realm of seamless roaming for
wireless clients. By creating a mobility group, you can enable multiple
controllers in a network to dynamically share information and forward
data traffic when inter-controller or inter-subnet roaming occurs.
Controllers in the same mobility group can share the context and state
of client devices as well as their list of access points so that they
do not consider each other’s access points as rogue devices. With this
information, the network can support inter-controller wireless LAN
roaming and controller redundancy."



"A mobility domain is a collection of controllers that have all been
configured with each other’s IP addresses, allowing clients to roam
between the controllers in the mobility domain."

[Rasika Nayanajith]

By default 9800 belongs to a mobility group called "default". You can verify it under "Configuration -> Wireless -> Mobility -> Global configuration". You can change it to any name you like.

When you got multiple controllers and you configure peering between each other, that creates a mobility domain. The mobility domain itself a not an individual setting on 9800

HTH

Rasika

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[Charlie Grey]

i come from AireOS.

my understand is i configured same mobility domain on all the controllers that i want seamless roaming.

then for controllers in different mobility domains, i will configure mobility group (list) to enable the above.

but the explanation for C9800 in C9800 doc doesn't seem to align to my understanding on mobility any more.