Cisco 2960 and WLC Accounting Interim-Update

[Matthew Newton]

On Mon, Apr 07, 2014 at 04:19:10PM -0700, Matthew Ceroni wrote:
> On Mon, Apr 7, 2014 at 4:11 PM, Alan DeKok <aland at deployingradius.com>wrote:
> >   This is a common theme with RADIUS.  FreeRADIUS isn't perfect, but
> > when things go wrong, blaming the NAS and/or the SQL server is a pretty
> > good decision.
>
> I was able to force the 2960 to sent at regular intervals by setting the
> Acct-Interim-Interval option in the Accept-Request packet. But that didn't
> work for the WLC.

The WLC will send interim-update packets when something changes.
So for example you'll see an acct-start without an IP when the
session begins, then an interim-update with the IP address after
DHCP has completed. You also get an update when the client roams
to a different AP.

If you want regular updates, look under

  WLANs -> your wlan -> Security
    -> AAA Servers -> Tick "Interim Update"
    -> Set Interim Interval

or use 

  config wlan radius_server acct interim-update ...

at the command line.

But on a busy system, you'll get a lot of (probably unnecessary)
updates that you may not want putting load on your server.

Cheers,

Matthew


-- 
Matthew Newton, Ph.D. <mcn4 at le.ac.uk>

Systems Specialist, Infrastructure Services,
I.T. Services, University of Leicester, Leicester LE1 7RH, United Kingdom

For IT help contact helpdesk extn. 2253, <ithelp at le.ac.uk>