http://www.cisco.com/en/US/products/ps10315/products_tech_note09186a0080bb4900.shtml
"In WLC release 7.2, the VLAN Select feature (which is supported only on the newer WLCs like 5508, WiSM-2, 7500, and 2500) was modified and now supports VLAN Select with a new modified algorithm. In the previous implementation, using the round robin algorithm was causing clients to obtain new IP addresses on every re-association, thus depleting IP addresses fast from the available DHCP pools." From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] On Behalf Of Anders Nilsson Sent: Friday, February 15, 2013 2:23 PM To: [email protected] Subject: [WIRELESS-LAN] SV: [WIRELESS-LAN] Cisco Wireless Interface Groups What version are you running on jour WLC? I know that there were hashing problems on older versions off 7.0 that resulted in that when a client reassociated it didn't come back to its former subnet. Try newer versions of 7.0 or 7.2 and I'll guess that it will work. It solved my problem. ;) Cheers Anders Nilsson Umeå university SUNET Sweden Från: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] För Vikki Cutrone Skickat: den 15 februari 2013 20:13 Till: [email protected]<mailto:[email protected]> Ämne: [WIRELESS-LAN] Cisco Wireless Interface Groups Hello All, I recently configured multiple /24 subnets into a wireless interface group on my controllers, in an effort to cut down on multicast as well as increase the IP address space. It seems to be working but DHCP addresses are still being consumed at an alarming rate. Is anyone else using the interface group feature? and if so is it working as expected? Thank you in advance! -- Vikki Cutrone Network Administrator Vassar College, Box 13 124 Raymond Ave Poughkeepsie, NY 12604-0013 845-437-7231 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
