Hi James Just thought I'd checked our WISM1's running 7.0.230.0 and we too are seeing the same thing. Hope this helps. regards Martyn Martyn Griffiths Network Services Group University of Glamorgan -----Original Message----- From: Wireless Issues in the JANET community [mailto:[log in to unmask]] On Behalf Of James J J Hooper Sent: 24 April 2012 11:17 To: [log in to unmask] Subject: A query for those with Cisco controllers... Hi All, We have Cisco WISM2 running 7.0.220 or 7.2.103, we are seeing the controller re-broadcast gratuitous ARP across VLANs (i.e. any gARP from wireless clients on any VLAN is re-broadcast by the WLC to other wireless clients) - "bad" for obvious reasons. If you have a spare moment and cisco kit running these versions, would you mind firing up wireshark on a wireless client and checking if you also are getting tons of gARP? ...I'm trying to determine if the behaviour is a 'feature' of our topology/config or if it's a code bug. Cisco originally reckoned it was CSCtj91693, which is also gARP related, but this is fixed in 7.2.103. We appear to still have the issue with 7.2.103. Kind regards, James -- James J J Hooper Network Specialist, University of Bristol http://www.wireless.bristol.ac.uk --