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wireless printers in dorms
I was wondering how other schools handle wireless printers in the dorms. This seems to be the year everyone showed up with one, and they're causing connectivity problems in our 2.4GHz space. Are you able to keep them under control, or do you seek them out and make students to turn them off? They seem to push our AP's to other channels (usually to 1 and 11, since it looks like the printers often use ch 6) to prevent co-channel interference. But sometimes several adjacent AP's end up on the same channel, so either there's still co-channel interference or they're powered down so much that either way it can cause problems through a whole building. Our infrastructure is all Cisco: a WiSM running 18.104.22.168 managing a mix of AP1252's and AP1231's. The AP's have been better at assigning 2.4GHZ channels since we unchecked "Avoid Foreign AP interference" in DCA settings. Our DCA Channel Sensitivity is Medium, and our TPC settings are max. 30dMb, min. -10dBm, threshold -70dBm. We have Client Band Select on, but most of our clients stick with 2.4Ghz, even where 5GHz is available. We've seen noticeable improvement when we're able to locate an interfering printer, disable its wireless, and change channels, but it's a lot of work and not always successful. Lots of knocking on doors, some printers don't seem to let you disable wireless, and sometimes DCA doesn't seem to spread them back among all 3 channels, so we end up setting some channels manually. Are there other useful settings in the WiSM? Any other ideas? Thanks, ---------------------------------------------------------- Tom O'Donnell Senior Manager of Network and Server Systems Information Technology Services University of Maine at Farmington (207) 778-7336 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.