Change Stellar Express Group Number

[mrosser]

Is it possible to change the Express cluster group number from the default (100) to something else on an existing installation without downtime? When I begin to change it, I get the following message:

“This operation may result in loss of the AP in the group. Continue?”

I want to change the group number so that I can split some of the APs off into their own group, but I do not want to lose connectivity for the ones that are staying in the existing group.

My plan was to change the group number, factory reset the APs to be split into a new group, then change the new group to another unique group number. Does this sound feasible without APs of the initial group losing group membership?

[ymilner]

When changing group number for existing cluster, you should experience short connectivity loss. After a while, your cluster should be available again, with a new group number.
At that point, every new factory AP (or AP from you cluster following factory reset) will form a new cluster with default group id.