Interface Groups have been a blessing. We also have utilized this to increase address space and reduce broadcast domains. Keep in mind that the groups use a round robin DHCP allocation to distribute addresses. The first client to join SSID will get an address from the first subnet in the group, the second client will get an address from the second subnet and so on...
Caution, this holds true if you have fixed DHCP and or/ Static IP clients. As a fixed DHCP client, if I'm cued up to come in on the 3rd subnet and my fixed address is in the first subnet in the group, I will get an address from the 3rd subnet, thus giving me a different address than what I expect. Thanks, Max Lopez Senior Wireless Engineer Office of Information Technology University of Colorado 3645 Marine St. Boulder, CO 80309 Direct: 303.492.2193 Skype: mrmax05 https://www.colorado.edu<https://www.cu.edu/> http://www.linkedin.com/in/maxlopez http://twitter.com/mrmaxlopez From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] On Behalf Of Vikki Cutrone Sent: Friday, February 15, 2013 12:13 PM To: [email protected] Subject: [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/.
