Tim, I am not sure what you mean by “bridging protocols”. Are you referring to things like Apple AirPlay that require the endpoints be on the same layer 2 network? Aruba’s AirGroup software defined networking does a pretty good job of resolving those issues.
Bruce Osborne Wireless Engineer IT Network Services - Wireless (434) 592-4229 LIBERTY UNIVERSITY Training Champions for Christ since 1971 From: Tim Tyler [mailto:ty...@beloit.edu] Sent: Monday, July 25, 2016 1:05 PM Subject: Re: How big are your wireless segments? Brian, We have pools of /22 /23/ and /24. We separate our pools from students vs fac/staff (still on the same ssid). It may be ok to do /16. I know that Aruba does a lot to prevent broadcast storms, but I feared the overhead of one large segment might have on it. We also give students a different ip pool depending whether they are in a residential building vs an academic/admin building. This allows us to shape traffic differently. But this will become less of an issue as we acquire more bandwidth (hopefully). I am curious of those using /16, does that resolve your layer 2 issues? Aruba does a good job of bridging many layer 2 solutions anyways, but having one /16 vlan does seem enticing and perhaps unnecessary for bridging protocols. However, I am curious about other overhead efficiency issues. Tim From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>] On Behalf Of Brian Helman Sent: Monday, July 25, 2016 10:22 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: [WIRELESS-LAN] How big are your wireless segments? We are in the process of moving from a controllerless vendor to Aruba. Our current design is very segmented, to keep wireless device broadcasts from overwhelming the network and AP’s (we had this problem back in 11g days). Presently, we’ve limited segments to /23’s (give or take). In your controller-based environments, how large have you let these segments go? Is a /21, /20 … viable? -Brian ____________________________________ Brian Helman, M.Ed | Director, ITS/Networking Services | •: 978.542.7272 Salem State University, 352 Lafayette St., Salem Massachusetts 01970 GPS: 42.502129, -70.894779 ********** 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/.
