We restrict on a per user basis as well. This is done in our pilot project 11n roll-out in one of our grad residences. We restrict them to 4meg bi-directional throughput. The decision was made to give res. users a similar service as to the 'best' they may experience with a broad-band Internet service at home. As it is our first kick at the 11n cat, we erred on the side of caution. IE.....we'd rather be the good guys and increase throughput speeds if users weren't happy (no complaints yet) rather than be the bad guys and claw back the speeds after the fact for some unforeseen reason (your basic expectation management). Why go with n at all?......as others have suggested earlier....this was a green-field deployment so it made sense to do it now...........cheaper than a possible retrofit later.
.................thx.........................J James Savage York University Senior Communications Tech. 108 Steacie Building [email protected] 4700 Keele Street ph: 416-736-2100 ext. 22605 Toronto, Ontario fax: 416-736-5830 M3J 1P3, CANADA Philippe Hanset <[email protected]> Sent by: The EDUCAUSE Wireless Issues Constituent Group Listserv <[email protected]> 04/27/2009 12:20 PM Please respond to The EDUCAUSE Wireless Issues Constituent Group Listserv <[email protected]> To [email protected] cc Subject Re: [WIRELESS-LAN] Wireless-only in residence halls we do, but for visitors only. for all users: Our wish list to Aruba includes a "fair bandwidth" request. Instead of a permanent rule per user, it would be an automatic rule that would kick in when too much load is on the AP. QoS for 802.11n ! There is not point to restrict a user if the AP is not overloaded. Philippe On Apr 27, 2009, at 10:59 AM, Michael Dickson wrote: > So, for anyone who is offering 802.1n is anyone putting bandwidth > restrictions for per-role or per-user? > > Mike > > > Peter P Morrissey wrote: >> Thanks Matt, >> I ordered a Dell that has one of those. Looking forward to testing >> it. All of this confirms though that there is no compelling reason >> for us to move to 802.11n. I was worried that I wasn't using the best >> equipment for the testing that I've done thus far with a couple of >> vendors. The testing shows a little over 100mbps down and maybe 90 >> up, and that is peak in the best case scenario lab conditions with an >> expensive, good quality adapter and all 11n parameters tuned. With >> cheaper, consumer grade adapters it was much lower than that. And, I >> would imagine it is even lower yet in real world scenarios. We're >> also finding that the range is usually no better, and in some cases >> worse than a/b/g. We tend to deploy with a lot of density anyway, so >> that isn't a big problem for us, but it contradicts what we had heard >> about the technology. It just doesn't look like users are going to >> notice any difference between current generation 11n and a solid >> a/b/g environment. And, when considering the cost difference and >> increased support complications that are inevitable when deploying a >> new technology, it is hard to make a case for moving to 11n with any >> urgency. If anyone has done any testing shows better results, please >> share it. >> Pete Morrissey >> -----Original Message----- From: The EDUCAUSE Wireless Issues >> Constituent Group Listserv >> [mailto:[email protected]] On Behalf Of Barber, Matt >> Sent: Monday, April 27, 2009 9:49 AM To: >> [email protected] Subject: Re: [WIRELESS-LAN] >> Wireless-only in residence halls >> Hi Pete, >> They do not do 3x3. I don't know of any adapters that do besides the >> Intel 5300. >> I haven't done any extensive throughput testing with those adapters. >> In terms of actual, real-world use though, they are performing fine. >> We have a few dozen people using them without issues. >> Matt Barber Network Analyst Morrisville State College 315-684-6053 >> -----Original Message----- From: The EDUCAUSE Wireless Issues >> Constituent Group Listserv [mailto:WIRELESS- >> [email protected]] On Behalf Of Peter P Morrissey Sent: >> Monday, April 27, 2009 9:29 AM To: >> [email protected] Subject: Re: [WIRELESS-LAN] >> Wireless-only in residence halls >> Do they do 3x3 MIMO? What is the best up/down throughput that has >> been achieved on them with channel bonding? Pete Morrissey >> -----Original Message----- From: The EDUCAUSE Wireless Issues >> Constituent Group Listserv [mailto:WIRELESS- >> [email protected]] On Behalf Of Barber, Matt >> Sent: Monday, April 27, 2009 8:42 AM To: >> [email protected] Subject: Re: [WIRELESS-LAN] >> Wireless-only in residence halls >> Hi Bruce, >> We went with two different Linksys dual-band adapters, one PCMCIA and >> one USB. The USB is really only for the few desktops that some >> students bring in. We sell it (the WUSB600n) at our bookstore. The >> PCMCIA one is the Linksys WPC600n, and we use it for some older >> laptops that don't have any wireless or only have 11b. >> Matt Barber Network Analyst Morrisville State College 315-684-6053 >> -----Original Message----- From: The EDUCAUSE Wireless Issues >> Constituent Group Listserv [mailto:WIRELESS- >> [email protected]] On Behalf Of Osborne, >> Bruce W. (NS) Sent: Sunday, April 26, 2009 6:43 AM To: >> [email protected] Subject: Re: [WIRELESS-LAN] >> Wireless-only in residence halls >> Matt, >> We are looking into selling dual band 11n adapters. Whish ones did >> you choose? >> What about desktop computers? Do you provide any solution for >> wireless? There do not seem to be any dual band 11n desktop cards. >> You can buy adapters and use some of the laptop cards, though. >> Thanks, Bruce Osborne Liberty University >> -----Original Message----- From: Barber, Matt >> [mailto:[email protected]] Sent: Saturday, April 25, 2009 1:21 >> PM Subject: Re: Wireless-only in residence halls >> This is similar to our approach. We push the 5 GHz as much as >> possible. Between the microwaves, Xbox 360 controllers, Bluetooth, >> and everything else, the 2.4 GHz in the dorms is a tad unpredictable. >> We sell dual-band 11n adapters in our bookstore, educate helpdesk >> visitors, and I am always testing how things look in the field. >> The great majority of the time, things work perfectly fine. When >> it doesn't, I will typically work directly with students to figure >> out >> why. Flipping some adapters to prefer 5 GHz (or only use 5 GHz even), >> or even suggesting that the microwave not be sitting 6 inches from a >> laptop typically takes care of things :) >> Matt Barber Network Analyst Morrisville State College 315-684-6053 >> -----Original Message----- From: The EDUCAUSE Wireless Issues >> Constituent Group Listserv [mailto:WIRELESS- >> [email protected]] On Behalf Of Hector J >> Rios Sent: Friday, April 24, 2009 7:19 PM To: >> [email protected] Subject: Re: [WIRELESS-LAN] >> Wireless-only in residence halls >> I forgot to mention that as well. In almost all of the rooms that >> we went into when we were doing our surveys we saw a microwave oven >> and >> an occasional 2.4GHz cordless phone. We spoke to Res Life and >> explained to them the impact that such devices could have on the >> wireless network. Having a dual solution is great because the 5GHz >> band is less crowded. But unfortunately many wireless adapters tend >> to prefer the 2.4GHz band. Disabling the 2.4GHz would be wonderful, >> but the reality is that there are still a lot of legacy devices out >> there, so you have to support them. We even considered offering >> 2.4GHz at 2Mbps only, hoping that this would discourage users from >> using 2.4GHz altogether and opt for 5GHz. The issue here is how to >> get users to adjust settings on their end so that they only use 5GHz. >> Currently we have opted to attempt to "educate" our users on how >> wireless works, how certain devices can have detrimental effects on >> the network, and how small modifications to their adapter settings >> can make a huge difference. Utopian, I know. I'll let you guys how >> that idea goes. >> Hector >> ********** 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/. > > ********** > 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/.
