Just to add clarification, both the AP-120 series and AP-105s only support two (2) spatial streams, despite the additional antenna on the AP-120 series. FYI.
========== Ryan Holland Network Engineer, Wireless Office of the Chief Information Officer The Ohio State University 614-292-9906 holland....@osu.edu On Aug 11, 2010, at 4:01 PM, Greg Williams wrote: > Ethan, sorry to not be of much help, but we've never had a problem with Band > Steering. We have a pretty dense deployment so maybe that's why. But one > thing you mentioned is you are using AP 105's. I can't remember 100% but I > did see a degradation in signal using the 105's on 5ghz vs 2.4ghz vs. AP 125 > when in a classroom, walled type environment. The AP 105's only have a 2X2 > spatial stream not a 3X3. We are using the AP 105's in more open areas for > that reason and 125's in the classroom type environments. > > Greg Williams > IT Security Principal > University of Colorado at Colorado Springs > > -----Original Message----- > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:wireless-...@listserv.educause.edu] On Behalf Of Ethan Sommer > Sent: Wednesday, August 11, 2010 1:30 PM > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > Subject: [WIRELESS-LAN] Band Steering? > > We are upgrading part of our network using Aruba AP-105s and a pair of > 3600 controllers. > > We've found an annoying problem when we have band steering turned on. > > We've create two SSIDs. Lets call them BandSteering and NoBandSteering. > When users are relatively close to an access point, they can connect to > either. My MacBook will usually connect using 2.4 Ghz on NoBandSteering and > will always connect using 5ghz to BandSteering. When a user is further away > from the access point, however, they can connect fine to NoBandSteering > (obviously it is slower than when they were closer) but can't connect at all > to the BandSteering SSID. It doesn't fail back to 2.4ghz, and the clients > don't recognize that they can't connect and connect to NoBandSteering if > that's lower in their preferred networks list. > > The effect is that, understandably, users will select the NoBandSteering > SSID because it is more reliable. (Even though it is slower in most cases.) > > Aruba suggested that I try setting the 5ghz ARM profile to always max out > the 5ghz radio, which helps some but does not eliminate the areas where > 2.4ghz works and 5ghz doesn't. > > So, my questions are: > 1. Are people using band steering? > 2. Have you found the same problem? > 3. Is there a way to fix it? (Other than turning off bandsteering.) > > > 4. I suppose a related question is, is there a way to make client computers > prefer 5ghz more? > > I guess we'll probably just not use band steering if we can't find a > solution, but it would be a shame not to better utilize the 5ghz spectrum > better. > > Thanks for any suggestions! > > Ethan > > -- > Ethan Sommer > Associate Director of Core Services > Gustavus Technology Services > somm...@gustavus.edu > 507-933-7042 > > ********** > 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/. > > > -- > BEGIN-ANTISPAM-VOTING-LINKS > ------------------------------------------------------ > > Teach CanIt if this mail (ID 1073089699) is spam: > Spam: https://antispam.osu.edu/b.php?i=1073089699&m=6beced56b784&c=s > Not spam: https://antispam.osu.edu/b.php?i=1073089699&m=6beced56b784&c=n > Forget vote: https://antispam.osu.edu/b.php?i=1073089699&m=6beced56b784&c=f > ------------------------------------------------------ > END-ANTISPAM-VOTING-LINKS > ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
