Re: [WIRELESS-LAN] 4-channels in 2.4 GHz

2012-05-13 Thread Johnson, Bruce T.
] 4-channels in 2.4 GHz With no intent to open a conversational can 'o worms, I'm curious if anyone is running a 4-channel plan on their production WLANs, that is willing to share their opinions and experiences on the topic. Thanks- Lee Lee H. Badman Wireless/Network Engineer, ITS Adjunct

RE: [WIRELESS-LAN] 4-channels in 2.4 GHz

2012-05-11 Thread Andy Voelker
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Kevin Semrau Sent: Friday, May 11, 2012 8:26 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] 4-channels in 2.4 GHz Dave, I would appreciate a copy of the report. Thanks in advance, Kevin Kevin Semrau Network Specialist

Re: [WIRELESS-LAN] 4-channels in 2.4 GHz

2012-05-10 Thread David J Molta
: [WIRELESS-LAN] 4-channels in 2.4 GHz With no intent to open a conversational can 'o worms, I'm curious if anyone is running a 4-channel plan on their production WLANs, that is willing to share their opinions and experiences on the topic. Thanks- Lee Lee H. Badman Wireless/Network Engineer, ITS

Re: [WIRELESS-LAN] 4-channels in 2.4 GHz

2012-05-10 Thread Ha Nguyen
-LAN@LISTSERV.EDUCAUSE.EDU mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Date: Tue, 8 May 2012 14:34:19 + To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: [WIRELESS-LAN] 4-channels in 2.4 GHz With no intent to open a conversational can 'o worms, I'm

Re: [WIRELESS-LAN] 4-channels in 2.4 GHz

2012-05-08 Thread Hanset, Philippe C
Lee, Univ. of TN Knoxville still runs 4 channels (1-4-8-11) and has been doing so since 2000! This said, we had a long discussion with Aruba Networks engineers about 3 VS 4 and they mentioned that their algorithms are better tuned for 3 channels (I suspect that it is the case for most vendors

RE: [WIRELESS-LAN] 4-channels in 2.4 GHz

2012-05-08 Thread David Gillett
a selection of channels for minimal interference.) David Gillett, CISSP CCNP _ From: Lee H Badman [mailto:lhbad...@syr.edu] Sent: Tuesday, May 08, 2012 07:34 To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: [WIRELESS-LAN] 4-channels in 2.4 GHz With no intent to open a conversational

Re: [WIRELESS-LAN] 4-channels in 2.4 GHz

2012-05-08 Thread Coehoorn, Joel
, and generally let it try to find a selection of channels for minimal interference.) David Gillett, CISSP CCNP -- *From:* Lee H Badman [mailto:lhbad...@syr.edu] *Sent:* Tuesday, May 08, 2012 07:34 *To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU *Subject:* [WIRELESS-LAN] 4

Re: [WIRELESS-LAN] 4-channels in 2.4 GHz

2012-05-08 Thread Hanset, Philippe C
On May 8, 2012, at 3:00 PM, Coehoorn, Joel wrote: The short answer is no. It comes down to the skirts again. Most low-end tools to measure wireless coverage do a poor job of showing this, but my understanding is that wifi RF is such that the skirts flare out quickly, and you have nearly all

Re: [WIRELESS-LAN] 4-channels in 2.4 GHz

2012-05-08 Thread Coehoorn, Joel
Phillippe, this is something I would **love** to be shown to be wrong about. I think all of us could benefit from a 4th channel (I know I would), if it comes with clear guidelines for when and how to use it in a way that will increase rather than decrease throughput. Right now, the best

Re: [WIRELESS-LAN] 4-channels in 2.4 GHz

2012-05-08 Thread Karl Reuss
Cisco has a paper on this with some graphs showing energy overlap on 4 channel deployments for both 802.11b and 802.11g. The 802.11g OFDM signal seemed more prone to interference in a 4 channel setup so we stuck with 1,6,11.

Re: [WIRELESS-LAN] 4-channels in 2.4 GHz

2012-05-08 Thread Ron Walczak
Joel, You last comment hit the nail on the head. We have been advising clients to migrate to 5.8 Ghz ASAP for years. 2.4 Ghz is a garbage band and all the rogues make it impossible to gain any density and throughput. While you may be adhering to 1-6-11, the rogues may not be, and many