Another one which looks promising for high-density locations is Xirrus (www.xirrus.com)
Haven't ever used them though. -mike Sent from my iPhone On Jan 15, 2012, at 15:36, Greg Ihnen <os10ru...@gmail.com> wrote: > Since we're already top-posting… > > I've heard a lot of talk on the WISPA (wireless ISP) forum that 802.11g/n > starts to fall apart with more than 30 clients associated if they're all > reasonably active. I believe this is a limitation of 802.11g/n's media access > control (MAC) mechanism, regardless of who's brand is on the box. This is > most important if you're doing VoIP or anything else where latency and jitter > is an issue. > > To get around that limitation, folks are using proprietary protocols with > "polling" media access control. Ubiquiti calls theirs AirMax. Cisco uses > something different in the "Canopy" line. But of course then you've gone to > something proprietary and only their gear can connect. So it's meant more for > back-hauls and distribution networks, not for end users unless they use a > proprietary CPE. > > Since you need consumer gear to be able to connect, you need to stick with > 802.11g/n. You should limit to 30 clients per AP. You should stagger your > 2.4GHZ APs on channels 1, 6 and 11, and turn the TX power down and have them > spaced close enough that no more than 30 will end up connecting to a single > AP. 5.8GHz APs would be better, and you'll want to stagger their channels too > and turn the TX power down so each one has a small footprint to only serve > those clients that are nearby. > > Stay away from "mesh" solutions and WDS where one AP repeats another, that > kills throughput because it hogs airtime. You'll want to feed all the APs > with Ethernet. > > Greg > > On Jan 15, 2012, at 4:22 PM, Nathan Eisenberg wrote: > >> Ubiquiti's Unifi products are decent, and have *MUCH* improved since their >> original release (amazing what you can do with better code!). In the >> original release, you had to have a management server running on the same L2 >> network as the Aps - they've moved the management to a L3 model so you can >> put the controller elsewhere. The big PITA with their system is that any >> change requires 'reprovisioning' the APs, which means rebooting all of them >> in sequence. They've added VLANs, multiple SSID's/AP, wireless >> backhaul/chaining, guest portalling, and limiters to balance the # of >> clients / AP. >> >> In a noisy environment, I've found that they top out at around 30 devices / >> AP for good performance, and 50 devices / AP for 'working/not working'. In >> a clean environment, I've seen decent performance with 70 - 100 devices / >> AP. Of course, if one bad client comes along (with a card that doesn't >> backoff its TX power, etc), it can wreak havoc with higher densities. You >> really can't argue with Unifi's price. >> >> If you move up the price scale, Meraki seems to be a good midrange solution, >> and they have some really sweet reporting functionality. They're more >> expensive, though. >> >> And then, yes, Cisco is the gold standard, but it will cost you some gold to >> get it. >> >> Nathan >> >>> -----Original Message----- >>> From: Mike Lyon [mailto:mike.l...@gmail.com] >>> Sent: Sunday, January 15, 2012 11:54 AM >>> To: Meftah Tayeb >>> Cc: nanog@nanog.org >>> Subject: Re: enterprise 802.11 >>> >>> Ubiquity (www.ubnt.com) has their Unifi line of products. It's still pretty >>> new >>> in the marketspace and this, working out the bugs. I use their other >>> products >>> exclusively for outdoor wireless. >>> >>> However, in the offices ive done, ive used Cisco's WLC 4402 controller which >>> supports 12 access points. They have controllers which support more APs as >>> well. >>> >>> Hit me up offlist if you have any quesrions. >>> >>> -mike >>> >>> Sent from my iPhone >>> >>> On Jan 15, 2012, at 11:39, Meftah Tayeb <tayeb.mef...@gmail.com> wrote: >>> >>>> Ubiquity >>>> or ubikity, maybe is miss spelled >>>> Someone correct the spelling for him please thank you >>>> ----- Original Message ----- From: "Ken King" <kk...@yammer-inc.com> >>>> To: <nanog@nanog.org> >>>> Sent: Sunday, January 15, 2012 9:30 PM >>>> Subject: enterprise 802.11 >>>> >>>> >>>> I need to choose a wireless solution for a new office. >>>> >>>> up to 600 devices will connect. most devices are mac books and mobile >>> phones. >>>> >>>> we can see hundreds of access points in close proximity to our new office >>> space. >>>> >>>> what are the thoughts these days on the best enterprise solution/vendor? >>>> >>>> Thanks for your replies. >>>> >>>> >>>> Ken King >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> __________ Information from ESET NOD32 Antivirus, version of virus >>> signature database 6793 (20120113) __________ >>>> >>>> The message was checked by ESET NOD32 Antivirus. >>>> >>>> http://www.eset.com >>>> >>>> >>>> >>>> >>>> __________ Information from ESET NOD32 Antivirus, version of virus >>> signature database 6793 (20120113) __________ >>>> >>>> The message was checked by ESET NOD32 Antivirus. >>>> >>>> http://www.eset.com >>>> >>>> >>>> >>>> >>> >> >> >
