Mike, Depending on your AP density and client base you might want to further restrict your data rates. The 1140s vary their transmit power by data rate for 802.3af compatibility and beam-forming (ClientLink). ClientLink and MRC will mitigate these transmit power reductions for legacy clients. I had heard some say the beacon timing was a bit off, but I think this was for the 1250 APs, and had since been resolved. Most of the other timers have the same implications as before, regardless of 802.11 PHY specs. Does anyone know how to verify the MAC layer aggregation being used (A-MPDU/A-MSDU)? How's your experience been so far compared to earlier AP hardware? Did you do a 1:1 in-place AP replacement? Thanks, Bruce T. Johnson | Network Engineer | Partners Healthcare Network Engineering | 617.726.9662 | Pager: 31633 | bjohns...@partners.org | 149 13th Street, 10th Floor, Mailstop 10055B, Charlestown, Ma 02129 ________________________________
From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:wireless-...@listserv.educause.edu] On Behalf Of Mike King Sent: Tuesday, March 02, 2010 9:17 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] New 5508 Wireless Controller Since I didn't get a response, I figured I'd post what I've done. I've shut off 1, 2, and 5.5 Mbps data rates on the 2.4Ghz band, enabled ClientLink on both bands, and switched the A band to 40Mhz channels. So far, so good. On Mon, Feb 22, 2010 at 5:01 PM, Mike King <m...@mpking.com> wrote: I'm bringing up my first controller that's on the 6.x code. Previously, we've only run the 4.2 code for stability reasons, but we now have a fresh batch of 1142N AP's and a couple of 5508 Controllers. I'd say that 90% of my clients have N wireless cards, and we're planning on being pretty dense with the AP coverage. That being said, what changes (tuning) have you guys that have been running 6.x code and N access points done? Over the years there have been many "tweaks" that people have suggested (Timer changes and whatnot). I just wonder if any of this stuff is still valid? The only tweak I'm planning on doing is disabling the lower data rates. (I am soliciting suggestions on what rates to disable) But I'm open to any suggestions. Mike ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
