Is this requirement for wireless guest access?? If so there is a option on WLC to restrict multiple user login policies on the WLC. You can option to set the value of 0 through 8 users, with 0 meaning unlimited.
To configure this from the GUI on the WLC:
Security > AAA > User Login Policies
To configure this from the CLI on the WLC:
config netuser maxUserLogin x
This is a known issue with ISE and there is a feature enhancement being tracked for this issue. Support for this should come in ISE 1.2 or even in the next maintenace release. You can try to reach out to your account team to have your company/business case piled on to the list, there are alot of people requesting this feature.
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Looks like this issue has not been resolved yet because I am currently running ISE 1.4 patch 3 and I created a guest account using the sponsor portal and I could connect using the same guest account credentials on 2 different devices (IPAD + Newest Samsung Tab). I will check if changing the WLC parameter from current 0 (unlimited concurrent logins for a username) to 1 makes any difference even though George pointed out something different.
Do you have any recent information on this? I have configured on the ISE 1.4 patch 3
Guest Access --- > Configure --- > Guest Type --- > Login Options --- > Maximum simultaneous logins = 1, but looks like it does not work as it is allowing 2 concurrent sessions on the same guest account credentials.
Otherwise, I would open a tac case.
This command is for local users created on the wlc who are using aaa. I don't think this applies to guest ..
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More than three concurrent users can log into Cisco ISE and view monitoring and troubleshooting statistics and reports, more than three concurrent users accessing Cisco ISE can result in unexpected behavior like (but not limited to) monitoring and troubleshooting reports and other pages taking excessive amounts of time to launch, and the application sever restarting on its own.
Although such restriction is available in ISE 1.2.