Frank, We are testing a dense Aruba deployment in our Info-Commons (a huge aisle of our main library is now an IT congregation area. Students love it) Seven access points are hosting about 140 users (peak usage from 11 AM till 5 PM). Those APs (Aruba 125) have b/g on one radio and a/n on the other radio (100 Mbps uplink..planning on moving those to Gig) Those Aruba APs are also surrounded by older Proxim AP-2000 and AP-4000. All APs (Proxim and Aruba) are part of the same layer two subnet (not yet using Aruba Mobility option). Lots of Broadcast and Multicast, since up to 5000 users concurrently use that subnet.
Originally we had performance issues on the Aruba APs. Their engineers came on campus to analyze the problem, and after a code upgrade (fixed a bug) and cancelling the 1 Mbps rate and 2 Mbps rate (Broadcast is using the lowest rate. Since we have a lot of broadcast, is helped a lot), issues dissapeared. I was peaking at 80 Mbps over n, surrounded by tons of b/g and a clients. Some of the limitation on n is related to the uplink port being 100 Mbps. Philippe ---------------------------------- Philippe Hanset University of Tennessee, Knoxville Office of Information Technology Network Services 108 James D Hoskins Library 1400 Cumberland Ave Knoxville, TN 37996 Tel: 1-865-9746555 ---------------------------------- On Tue, 22 Apr 2008, Frank Bulk - iNAME wrote: > Can anyone on this list comment on their "dense" experiences with vendors > other than Meru (and Xirrus)? > > I know I may appear to be buoying Meru in this thread, but it's only because > I haven't heard a higher-ed using another vendor talk about their own good > experiences. > > Regards, > > Frank > > -----Original Message----- > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:[EMAIL PROTECTED] On Behalf Of Frank Bulk > Sent: Monday, April 14, 2008 2:52 PM > To: [email protected] > Subject: Re: [WIRELESS-LAN] many clients, one room > > John's comments reflect almost exactly what I heard two years ago. > > Would love to hear on this list from other shops (Aruba, Cisco, Colubris, > Symbol, Trapeze, Symbol) what their experiences and configurations are in > similar circumstances. > > Frank > > -----Original Message----- > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:[EMAIL PROTECTED] On Behalf Of John Center > Sent: Monday, April 14, 2008 10:48 AM > To: [email protected] > Subject: Re: [WIRELESS-LAN] many clients, one room > > Hi Clint, > > The AP208 have 2 radios, 11a & 11b/g. We have the laptops set up to > prefer 11a, so the bulk of the connections are 11a. MathCAD is > installed locally on the laptops, but the size of the student files vary > - probably comparable to a Powerpoint presentation. We used to do this > with Cisco AP1200s & had constant complaints. No more. We had the same > problem at exam times at our Law School. No more. Like I said, we are > very happy with the Meru products. > > HTH > > -John > > > Ringgold, Clint wrote: > > Can you please give us more information in terms of how the APs and > > Laptops were setup. > > > > I'm no math major and on a bad day I have trouble adding (don't laugh). > > Anyway, I'm just wondering if it was setup so you have > > 54+54+11+11=130/250(users)=.52 or 54+54+11=119/250(users)=.476. I am > > not implying a thing. I'm asking this just for my clarification. > > > > It sounds like the software may have been on the laptop and/or only the > > answer or very small packets were saved to/from a server. If it is > > "designed" to work with little bandwidth (like Citrix) then that is > > great. I'm just saying it is a difference. > > > > > > -----Original Message----- > > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > > [mailto:[EMAIL PROTECTED] On Behalf Of John Center > > Sent: Monday, April 14, 2008 8:28 AM > > To: [email protected] > > Subject: Re: [WIRELESS-LAN] many clients, one room > > > > Hi Don, > > > > We are a Meru customer & we've had great success with their system in > > our large lecture rooms. On Friday, we had 250 Engineering students > > taking an exam, which required MathCAD, on 2 Meru AP208s. The exam ran > > flawlessly. > > > > HTH > > > > -John > > > > > > Don Wright wrote: > >> I know this has been talked about and debated on this list > > before, > >> but what are people doing today when faced with a request like the > > need > >> "for 100 students simultaneously downloading a powerpoint > > presentation". > >> Recently there was discussion on MCA vs. SCA vendors and how each > >> handles this worst case scenario. Since we are an MCA (Aruba), I'd > > be > >> interested in hearing what others have done or are planning for large > >> classrooms and auditoriums. > >> > >> -- > >> Don Wright > >> Network Technologies Group > >> Brown University > >> > >> wire --- less, wi-fi ))) more > >> ********** 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/. > > ********** > 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/. > ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
