We have the typical corridor deployment and also experienced low power levels due to default RRM/TPC thresholds. We didn't like the idea of micromanaging power levels or the huge cost increase and security concerns of placing WAPs in the rooms. In Cisco land, a workaround for now, was increasing the power threshold from the default –70 to –50 whenever there are three or more neighbors. I've only seen the way to do this globally per each controller, and changes are only invoked by the Power Assignment Leader. I was hoping to be able to create groups and manage RRM per building but I'm either overlooking that feature or imagined it. We're using wism2's on 7.2 code.
So for now this is a campus-wide adjustment. Given the majority of our coverage model is corridor based in academic and res hall buildings, it appears to be a benefit in most locations. We have fairly good overlap so it is rare that any given WAP is at full power, even with the increased threshold. If we end up with too much channel noise we might reduce the threshold a bit. NCS heat maps show improved coverage into corner and obstructed areas and our Fluke AirCheck and some laptop testing confirm. Michael Dorshimer Network Administrator Shippensburg University From: Tristan Gulyas <tristan.gul...@monash.edu<mailto:tristan.gul...@monash.edu>> Reply-To: The EDUCAUSE Wireless Issues Constituent Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> Date: Monday, January 21, 2013 11:34 PM To: "WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>" <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> Subject: Re: [WIRELESS-LAN] students per AP in residence halls Hi Tom. The issue we've had is not one of density but one of coverage; in some site surveys we'e conducted recently in our residential spaces, we are finding that one AP might cover only a small amount of students, say, 6-12 reliably. The challenges have been that our residential halls are old, double-brick with all sorts of reinforcement. We are site surveying for 2.4GHz - we can't justify the cost of a high density deployment to support 5GHz everywhere. I have also noticed that HP produce a small active wall-outlet switch+AP which is PoE powered. It is b/g/n 2.4GHz-only (sigh) and is aimed at the hospitality industry. Where are people placing their APs? We currently place them in the corridor, however our challenge has been that the APs see each other and RRM wants to drop the power levels. We also run into issues if we have more than three APs in direct line of sight. I'm curious - how do hotels deal with this problem? They have similar construction and requirements. Cheers, Tristan On Fri, Jan 11, 2013 at 9:50 AM, Tom O'Donnell <to...@maine.edu<mailto:to...@maine.edu>> wrote: I was wondering what other schools have for a ratio of students to AP's in the residence halls, either definitely or approximately? If you have such a number, how do you count dual-band AP's? They're doing more than a 2.4GHz AP, but not quite as much as two AP's. Then one last related question... Would anyone know their relative mix of 2.4GHz vs. 5GHz connections in residence halls? Thanks. ---------------------------------------------------------- Tom O'Donnell Senior Manager of Network and Server Systems Information Technology Services University of Maine at Farmington (207) 778-7336<tel:%28207%29%20778-7336> ********** 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/.
