Robert, On your 7Mbit/s throughput... this is actually pretty reasonable. At 10Mhz, you have a max interface rate of 27mbit. With a coding rate of 1/2, you're down to 13.5. Assuming that client association rate are all over the map, 7mbit/s is not unexpected. BTW, this is not a limit on the RB... this is a limit of the wireless technology.
I'm looking at something very similar with a system built as 12 APs total in 5.8Ghz, all horizontal, with lots of duplicate channels being used. It's a mess. The ISP who bought the system deployed 3 2.4Ghz sectors and has moved some clients over, but this hasn't really helped much, as they left all 3 units in 802.11b, and have some really weak association rates. They're lucky to get 2Mbit/s aggregate. My thoughts on this, would be to deploy up to 5 5.8Ghz sectors and 3 2.4Ghz sectors. All radios 802.11n running 2x2 MIMO. CPE would stay as-is, except that crews would be deployed to address problem installations, such as adjusting the alignment, rotating polarity, or even replacing the CPE to change the band, installing stronger radios, or higher gain antennas. There are a LOT of variables to take into account. Hopefully, in the end, we'll have nobody connected at less than -70db. For the AP, I'm leaning strongly towards the RocketM, which would seem to offer the best price/performance out there. The only thing I'm not clear on, is what use GPS is if UBNT still recommends not using the same channel. I'd love to be able to use a full 2x2/40mhz in the middle of the 2.4Ghz band on 3 (or more) sectors. -Troy > -----Original Message----- > From: [email protected] [mailto:mikrotik- > [email protected]] On Behalf Of Robert Haas > Sent: Tuesday, February 05, 2013 9:22 AM > To: 'Mikrotik discussions' > Subject: Re: [Mikrotik] 2.4Ghz AP upgrade recomendations > > Total through the AP. > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Scott Reed > Sent: Tuesday, February 05, 2013 5:39 AM > To: Mikrotik discussions > Subject: Re: [Mikrotik] 2.4Ghz AP upgrade recomendations > > Is that 7Mbps per customer or total through the AP? > > On 2/4/2013 4:30 PM, Robert Haas wrote: > > We've been using Routerboards (433AH's as of late) with UBNT XR2's > > for our AP's for years. It's time to start migrating these AP's to > > something with more capacity. > > > > With 10Mhz channels we find we are hitting a bottleneck of about 7Mb/s > > before customers start complaining about slow speeds & high pings > > times > etc. > > > > > > > > What is the next logical step? > > > > > > > > I think the 433AH's have enough oomp as I just bridge them down to the > > core switch. Should I change to a MIMO setup with an R52Hn? > > > > If we do change, will our existing CPE still function (Mostly RB411's > > and a few UBNT clients)? > > > > > > > > One particular tower has 140 2.4Ghz customers spread across 6 AP's (3 > horiz. > > & 3 vertical). I expect this tower to be a thorn in my side.. > > > > > > > > > > > > -------------- next part -------------- An HTML attachment was > > scrubbed... > > URL: > > <http://mail.butchevans.com/pipermail/mikrotik/attachments/20130204/df > > 05925e/attachment.html> > > _______________________________________________ > > Mikrotik mailing list > > [email protected] > > http://mail.butchevans.com/mailman/listinfo/mikrotik > > > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > > RouterOS > > > > > > ----- > > No virus found in this message. > > Checked by AVG - www.avg.com > > Version: 2013.0.2890 / Virus Database: 2639/6065 - Release Date: > > 01/29/13 > > > > > > -- > Scott Reed > Owner > NewWays Networking, LLC > Wireless Networking > Network Design, Installation and Administration > > > > Mikrotik Advanced Certified > > www.nwwnet.net > (765) 855-1060 > (765) 439-4253 > (855) 231-6239 > > > _______________________________________________ > Mikrotik mailing list > [email protected] > http://mail.butchevans.com/mailman/listinfo/mikrotik > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > RouterOS > > _______________________________________________ > Mikrotik mailing list > [email protected] > http://mail.butchevans.com/mailman/listinfo/mikrotik > > Visit http://blog.butchevans.com/ for tutorials related to Mikrotik > RouterOS _______________________________________________ Mikrotik mailing list [email protected] http://mail.butchevans.com/mailman/listinfo/mikrotik Visit http://blog.butchevans.com/ for tutorials related to Mikrotik RouterOS
