Nope, that’s expected. However, some clients handle it better than others. Modern Intel nics, the user will likely not notice. Apple Macs are notoriously slower on rolling with it. Mac users will likely drop 2-4 pings on any DCA event they are connected to.
I’m gearing up to test 10.3 Beta to See if this still holds true. Sent from my iPhone > On Jul 28, 2017, at 12:28 PM, Legge, Jeffry <[email protected]> wrote: > > I used to use BEST but found that many users were getting kicked when it > changed width. Am I doing something wrong? > > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:[email protected]] On Behalf Of Jeffrey D. Sessler > Sent: Thursday, July 27, 2017 8:24 PM > To: [email protected] > Subject: Re: [WIRELESS-LAN] Cisco FRA APs > > If you’re not using best you are leaving bandwidth in the air (so to speak). > The code will auto determine best width based on the clients it sees in the > surrounding areas (the white paper covers this), so if they are all AC (and > depending on other factors), the WAPs will run at 80. Not AC or a mix, there > is a decision algorithm used to decide width all the way down to 20. > > My new residential hall is about 120 beds and 110 WAPs – very dense. Nearly > all of them are 80-wide when running in best. The propagation of 5GHz is > poor, so it doesn’t take a lot of distance to allow reuse of channels. > > Jeff > > From: "[email protected]" > <[email protected]> on behalf of Jake Snyder > <[email protected]> > Reply-To: "[email protected]" > <[email protected]> > Date: Thursday, July 27, 2017 at 2:26 PM > To: "[email protected]" <[email protected]> > Subject: Re: [WIRELESS-LAN] Cisco FRA APs > > I’m not a DCA BEST guy. You should be using the channel width that the > building can support. With FRA, it’s easy to quickly overshoot the amount of > channels available. > > That said, if you want to take the advice to use BEST, you should set the max > width to 40MHz. > > Also, > > > On Jul 21, 2017, at 11:28 AM, Jeffrey D. Sessler <[email protected]> > wrote: > > Less, there is a Cisco white paper on the subject (applies to 8.2 and above). > It has a lot of fantastic information on RRM in general including FRA, > including how it makes decisions. It should all be there, and what’s not I > got directly from the RRM/FRA engineers in the BU. > > http://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/8-3/b_RRM_White_Paper.html > > Jeff > > > > From: "[email protected]" > <[email protected]> on behalf of "[email protected]" > <[email protected]> > Reply-To: "[email protected]" > <[email protected]> > Date: Friday, July 21, 2017 at 8:23 AM > To: "[email protected]" <[email protected]> > Subject: Re: [WIRELESS-LAN] Cisco FRA APs > > Jeff- > > Any reference links on the timers/sensitivity/channel width recommendations? > > -Lee > > Lee Badman | Network Architect > > Certified Wireless Network Expert (#200) > Information Technology Services > 206 Machinery Hall > 120 Smith Drive > Syracuse, New York 13244 > > t 315.443.3003 f 315.443.4325 e [email protected] w its.syr.edu > SYRACUSE UNIVERSITY > syr.edu > > > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:[email protected]] On Behalf Of Jeffrey D. Sessler > Sent: Thursday, July 20, 2017 4:30 PM > To: [email protected] > Subject: Re: [WIRELESS-LAN] Cisco FRA APs > > In general, here are the important items. > Make sure your 802.11a/n/ac and b/g/n DCA timers are at the default 10 mins. > This is critical since FRA uses the data from DCA runs to decide changes for > the radio. If this runs only once every six hours, FRA will not be able to > make an informed (correct) decision about the radio role. > 802.11a/n/ac and b/g/n must have the same RF group leaders, and those leaders > must be controllers running the latest code. > 802.11a/n/ac DCA Channel Width should be set to “Best” – it’s helps maximize > spectrum use. Even in our dense deployments, most WAPs run in 80 MHz. > FRA – sent sensitivity to LOW, this sets the bar very high for determining a > role switch for the radio. > FRA – Interval of 1 Hour. This allows the fastest reaction to need. > > Last but not least, proper deployment is key. If WAPs are in hallways, FRA is > not going to work well at all since you’ll wind up with coverage holes for > clients in rooms. If you are deploying in-room, FRA works wonderfully. > > In my residential hall with 3800’s, very few WAPs pick 2.4 and many run dual > 5Ghz. The residential hall is 10-30x the bandwidth use of another similar res > hall with 3700-series. It’s wireless only and I’ve had no complaints from the > residents. > > Jeff > > From: "[email protected]" > <[email protected]> on behalf of > "[email protected]" <[email protected]> > Reply-To: "[email protected]" > <[email protected]> > Date: Thursday, July 20, 2017 at 11:47 AM > To: "[email protected]" <[email protected]> > Subject: Re: [WIRELESS-LAN] Cisco FRA APs > > We are currently running version 8.2.151.0 which looks to be the most recent > 8.2 release. > > Thanks > Bruce > > > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > [mailto:[email protected]] On Behalf Of Luke Jenkins > Sent: Wednesday, July 19, 2017 4:57 PM > To: [email protected] > Subject: Re: [WIRELESS-LAN] Cisco FRA APs > > What code version are you using? I'd recommend the latest 8.2 maintenance > release for anyone using FRA. > > -Luke > > On Tue, Jul 18, 2017 at 11:38 AM, Entwistle, Bruce > <[email protected]> wrote: > This summer we remodels a residence hall and installed our first Cisco FRA > APs, model 2802i. The Radio Role Assignment on the APs is currently set to > auto, and a few of the APs have changed to run both radios at 5GHz. I was > looking to see what others have observed and have found successful with this > type of installation. > > Thank you > Bruce Entwistle > Network Manager > University of Redlands > > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found > athttp://www.educause.edu/discuss. > > > > -- > =-=-=-=-=-=-=-=-=-=-=-= > Luke Jenkins > Senior Network Engineer > Weber State University > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found > athttp://www.educause.edu/discuss. > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found > athttp://www.educause.edu/discuss. > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found > athttp://www.educause.edu/discuss. > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found > athttp://www.educause.edu/discuss. > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found at > http://www.educause.edu/discuss. > > > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found at > http://www.educause.edu/discuss. > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found at > http://www.educause.edu/discuss. > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found at > http://www.educause.edu/discuss. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/discuss.
