Aruba networks advises to keep the subnets /23 (for big campuses) because of wasted airtime due to increased management (beacons and mgt frames).
I agree Cisco has excellent technical content, but imho for WLAN specifically, Aruba is better. http://www.arubanetworks.com/wp-content/uploads/DG_HighDensity_VRD.pdf Regards, Kees Pronk Netwerk admin & engineer Avans University of Applied Sciences Diensteenheid ICT en Facilitaire Dienst (DIF) - ICT-Beheer Bezoekadres: Hogeschoollaan 1, Kamer HG204 4818 CR Breda, The Netherlands Postadres: Postbus 90116 4800 RA Breda E: cl.pr...@avans.nl T: @rovinguser >>> Tristan Rhodes <tristanrho...@weber.edu> 8/1/2012 11:12 >>> Like it was mentioned by Anders, this excellent material is freely available after a registration. Funny though, it seems that you can access the file directly: Design and Deployment of Enterprise WLANs (BRKEWN-2010) http://d2zmdbbm9feqrf.cloudfront.net/2012/usa/pdf/BRKEWN-2010.pdf Cisco has the most technical content available, compared to any other network vendor that I am aware of. Cheers! Tristan -- Tristan Rhodes Network Engineer Weber State University (801) 626-8549 >>> On 7/31/2012 at 5:01 PM, in message >>> <CAP8VL9hbfk669TT=XGMu5WdMt25_eopDZ=xvcvceohabjrr...@mail.gmail.com>, Mark >>> Duling <mark.dul...@biola.edu> wrote: Luke, it looks like that presentation isn't public. Can you say more about Cisco's recommendations on that? Or are they simply saying /21 is the maximum recommended size? I'd also be interested in anything they said about mcast as it relates to size. I've setup vlan select on a test WLAN with the intent of breaking up my /21 into smaller pieces for the fall, but I've had no problems with it (though mcast is off). But I thought I would use smaller subnets since our wireless use has gone up quite a bit in recent years and doing it is so simple to do now. I've heard conflicting info, and to my surprise one time a TAC engineer suggested they should be no larger than /24, which I think is erroneous. Mark On Tue, Jul 31, 2012 at 2:43 PM, Luke Jenkins <ljenk...@weber.edu> wrote: What type of gear are you using? Cisco is now recommending using /21s for their unified wireless gear (Sujit Ghosh, Cisco Live US 2012 BRKEWN-2010, Slide 75). -Luke =-=-=-=-=-=-=-=-=-=-=-= Luke Jenkins Network Engineer Weber State University On Jul 31, 2012, at 11:59 AM, Craig Simons <craigsim...@sfu.ca> wrote: > All, > > We are looking at re-engineering our wireless networking IP space and I'm > wondering what type of boundaries other have pushed their networks to. We are > currently using /22 networks (14 of them) most of which during a busy period > of the day will run around 75-80% utilization (at least as far as DHCP > assignments go). When I look at most APs during the day, I see that most APs > have users belonging to several networks (roaming), and as we have multicast > disabled, it would seem that the advantages of segregating wireless networks > on the basis of limiting broadcast domain are moot. Is anyone running /21 > networks or larger? > > We've investigated NAT, but accurately logging internal-external IP address > assignments for our users has proven difficult. Our vendor also doesn't > currently support any type of "VLAN pooling" feature. > > Interested in your opinions, > Craig > > > > -------------------------------------- > Craig Simons > Network Operations > Simon Fraser University > Burnaby BC, Canada > em. craigsim...@sfu.ca > ph. 778-782-8036 ( tel:778-782-8036 ) > ce. 604-649-7977 ( tel:604-649-7977 ) > tw. twitter.com/simonscraig > -------------------------------------- > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found > athttp://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/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. --------------------------------------------------------------------------- Op deze e-mail zijn de volgende voorwaarden van toepassing: The following conditions apply to this e-mail: http://emaildisclaimer.avans.nl --------------------------------------------------------------------------- ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
