Access Control - No RADIUS interim accounting option
I'm wanting to set up the interim accounting value for clients to line up with other Cisco Aironet sites we have. According to the 'Meraki RADIUS 2.0' page it should be available on the 'new version' of the Access Control page.
It says "If an accounting server is added and saved, the option "Accounting interim interval" will be available to control how often accounting messages are sent to the server." and I have done this multiple times but still no interim accounting value is available.
One thing I'm wondering is if this is a v28.x feature only? Our MR46s are running v27.1.1 and I note from the same page "Some of these features will be available for all our customers by June 11th, if the feature is urgent before that please call support so it can be enabled. For the use of the new features, all APs must support MR28 and be updated".
Can anyone shed light on whether I should be seeing the interim accounting options with 27.1.1?