Yep Add to this the fact that if you enable mcast/bcast the vast majority of the traffic taking up that air time isn't of any use/worth; Bonjour ... SSDP.
I'm thankful Aruba is addressing the issue, very, but unfortunately not surprised that Apple's solution thus far is to just deal with it. I honestly like Apple products and software, but they are not enterprise ready/worthy IMHO. Who am I to try and dissuade the emotional sea of consumer demand insisting enterprise adoption (interoperability anyone?). I asked the same Apple rep about running their server OS on VMware. I was not surprised by the answer; "sure, but only on our hardware". Lol, They kill me. -Brian Kellogg -----Original Message----- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Brooks, Stan Sent: Wednesday, February 22, 2012 12:49 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: You knew it was coming...Airplay/Apple TV support for instructors. So it's not just about the bandwidth. B'cast & M'cast use the lowest configured data rate of the AP - just like wireless management frames. This means that even for 300Mbps 802.11n network is reduced to 24Mbps or less. That also ties up airtime that could be given to faster clients as well, since transmitting data at a lower data rate consumes more time that transmitting data at a higher data rate. So even if it is a low bit-rate stream, it takes away more available bandwidth from other clients. Aruba has a method that takes b'cast & m'cast and converts it to higher speed unicast traffic to each client. This gives better results for about up to 12 clients on an AP/radio. >>-> Stan Brooks - CWNA/CWSP Emory University University Technology Services 404.727.0226 AIM/Y!/Twitter: WLANstan MSN: wlans...@hotmail.com GoogleTalk: wlans...@gmail.com -----Original Message----- From: Mike Goebel <michael.goe...@wmich.edu> Reply-To: The EDUCAUSE Wireless Issues Constituent Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Date: Wed, 22 Feb 2012 11:09:16 -0500 To: <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: Re: [WIRELESS-LAN] You knew it was coming...Airplay/Apple TV support for instructors. >Has anyone actually tracked how much bandwidth/usage Bonjour coughs up >across their wlan infrastructure? I haven't analyzed it, and while it >could be bandwidth hungry, it appears to me that will be more with >device to device. > >I'm playing devils advocate here, but is a 6 meg stream on an N access >point both ways really going to be crunching anyone? I'd be worried >about G yes, but N with a gig uplink? > >I do find it unnerving that all the bonjour devices are able to find >each other and potentially create a lot of traffic, but 99.9% of the >time I don't see anyone working any access point very hard. > >Mike Goebel >Network Programmer >Office of Information Technology >Western Michigan University >Phone: 269-387-0453 >Email: michael.goe...@wmich.edu > >On 2/22/2012 10:18 AM, Kellogg, Brian D. wrote: >> We will need Bonjour in order to allow faculty members to mirror their >>iPads/WhateverAppleProductElse to an AppleTV in a classroom for >>presentations wirelessly. Presently we block all mcast and bcast on our >>WLAN due to the channel use overhead this incurs (anywhere from 10% to >>20%). We'll be moving to Aruba this summer where enabling bcast and >>mcast is not an all or nothing endeavor I believe. I think Aruba is >>integrating some stuff into their controller code to help with this >>problem or already has it. Someone who knows more about Aruba can >>correct me if I'm wrong. >> >> -Brian >> >> -----Original Message----- >> From: The EDUCAUSE Wireless Issues Constituent Group Listserv >>[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Brian David >> Sent: Wednesday, February 22, 2012 10:11 AM >> To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU >> Subject: Re: You knew it was coming...Airplay/Apple TV support for >>instructors. >> >> We are faced with the same issues here at BC... We are starting to >>block it for all students but have not for the Faculty. >> Could you give more details on what apps the faculty needed bonjour for? >> -Brian >> >> Brian J David >> Network Systems Engineer >> Boston College >> >> >> -----Original Message----- >> From: The EDUCAUSE Wireless Issues Constituent Group Listserv >>[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Brian Helman >> Sent: Wednesday, February 22, 2012 9:54 AM >> To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU >> Subject: Re: [WIRELESS-LAN] You knew it was coming...Airplay/Apple TV >>support for instructors. >> >> Agreed. We are blocking bonjour between buildings, but not within. I >>wanted to block within, but there are apps out there that the faculty >>want to use that require it. That was the compromise I settled on... >>looking forward to 802.11ac now. >> >> I thought my days of dealing with AppleTalk, IPX and Netbeui were done. >> >> -Brian >> >> -----Original Message----- >> From: The EDUCAUSE Wireless Issues Constituent Group Listserv >>[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Kellogg, Brian >>D. >> Sent: Tuesday, February 21, 2012 5:21 PM >> To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU >> Subject: Re: [WIRELESS-LAN] You knew it was coming...Airplay/Apple TV >>support for instructors. >> >> Had an Apple rep in recently and he stated Apple (Bonjour) has come a >>long way since Appletalk on their network protocols. I wanted to >>believe him and then I tried to use it on our campus. LAN only protocol >>that relies on mDNS registration to bridge networks assuming all your >>end devices support it of course. Reminds me of LAN/SOHO only protocols >>I worked with a decade ago. Why not allow the device being mirrored to >>specify the device you want to mirror to by IP address or FQDN. I don't >>think I'm asking for too much from the man but, alas, perhaps I am. >> >> >> Disappointed yet again by Apple network protocols, Brian >> >> -----Original Message----- >> From: The EDUCAUSE Wireless Issues Constituent Group Listserv >>[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Lee H Badman >> Sent: Tuesday, February 21, 2012 4:57 PM >> To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU >> Subject: Re: You knew it was coming...Airplay/Apple TV support for >>instructors. >> >> Would be interesting to contemplate a petition or similar from the >>Educause members to Apple requesting that they catch up to the fact that >>their toys are invading the enterprise, that the enterprise doesn't run >>on AirPorts, and therefor they might develop towards the enterprise >>WLAN, Then again, I doubt they'd give a rip. >> >> It's a shame that the sexiest devices on the planet have such shallow >>network development behind them. >> >> -Lee >> >> >> ________________________________________ >> From: The EDUCAUSE Wireless Issues Constituent Group Listserv >>[WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] on behalf of Cappalli, Tim G @ >>LSC-ITS [tim.cappa...@lsc.vsc.edu] >> Sent: Tuesday, February 21, 2012 4:36 PM >> To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU >> Subject: Re: [WIRELESS-LAN] You knew it was coming...Airplay/Apple TV >>support for instructors. >> >> It's time for Apple step up. How many hundreds of hours are we going to >>spend on this? For the first time in a long time, we are saying "no" for >>the time being. >> >> >> Tim Cappalli, CCNA ACMA | IT Services | (802) 626-6456 >>> tim.cappa...@lyndonstate.edu | it.lyndonstate.edu >> >> PRIVACY& CONFIDENTIALITY NOTICE >> This message is for the designated recipient only and may contain >>privileged, confidential, or otherwise private information. If you have >>received it in error, please notify the sender immediately and delete >>the original. Any other use of an email received in error is prohibited. >> >> Sent from my BlackBerry(r) PlayBook(tm) >> >> -----Original Message----- >> From: The EDUCAUSE Wireless Issues Constituent Group Listserv >>[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Peter P >>Morrissey >> Sent: Tuesday, February 21, 2012 4:14 PM >> To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU >> Subject: Re: [WIRELESS-LAN] You knew it was coming...Airplay/Apple TV >>support for instructors. >> >> Isn't it amazing that they actually mention classrooms and conference >>rooms here, yet the geniuses at Apple probably have no clue about what >>is really involved? >> Pete M. >> >> -----Original Message----- >> From: The EDUCAUSE Wireless Issues Constituent Group Listserv >>[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Julian Y Koh >> Sent: Tuesday, February 21, 2012 4:00 PM >> To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU >> Subject: Re: [WIRELESS-LAN] You knew it was coming...Airplay/Apple TV >>support for instructors. >> >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> On Fri Dec 16 2011 11:16:43 Central Time, "Johnson, Neil M" wrote: >>> >>> We have a request to support Airplay/Apple TV's on our enterprise >>> network so that instructors can mirror presentations from their iPad's >>> to classroom and meeting room projectors. >> >> This is only going to get more prevalent now that Mountain Lion will >>support Airplay mirroring from OS X machines. >> >> <http://www.apple.com/macosx/mountain-lion/features.html#airplay> >> >> Gonna be fun.... >> >> - -- >> Julian Y. Koh<mailto:kohs...@northwestern.edu> >> Manager, Network Transport<phone:847-467-5780> >> Telecommunications and Network Services Northwestern University >> PGP Public Key:<http://bt.ittns.northwestern.edu/julian/pgppubkey.html> >> >> -----BEGIN PGP SIGNATURE----- >> Version: GnuPG/MacGPG2 v2.0.17 (Darwin) >> Comment: GPGTools - http://gpgtools.org >> >> iEYEARECAAYFAk9EBcgACgkQDlQHnMkeAWMf8wCfdfVsWgcll4cqUiIQRL/DClf5 >> w1IAnjvdC0e34jam3rguhn2fG/kUmm+p >> =Bd3x >> -----END PGP SIGNATURE----- >> >> ********** >> Participation and subscription information for this EDUCAUSE >>Constituent Group discussion list can be found at >>http://www.educause.edu/groups/. >> >> ********** >> Participation and subscription information for this EDUCAUSE >>Constituent Group discussion list can be found at >>http://www.educause.edu/groups/. >> >> ********** >> Participation and subscription information for this EDUCAUSE >>Constituent Group discussion list can be found at >>http://www.educause.edu/groups/. >> >> ********** >> Participation and subscription information for this EDUCAUSE >>Constituent Group discussion list can be found at >>http://www.educause.edu/groups/. >> >> ********** >> Participation and subscription information for this EDUCAUSE >>Constituent Group discussion list can be found at >>http://www.educause.edu/groups/. >> >> ********** >> Participation and subscription information for this EDUCAUSE >>Constituent Group discussion list can be found at >>http://www.educause.edu/groups/. >> >> ********** >> Participation and subscription information for this EDUCAUSE >>Constituent Group discussion list can be found at >>http://www.educause.edu/groups/. >> >> ********** >> Participation and subscription information for this EDUCAUSE >>Constituent Group discussion list can be found at >>http://www.educause.edu/groups/. > >********** >Participation and subscription information for this EDUCAUSE Constituent >Group discussion list can be found at http://www.educause.edu/groups/. ________________________________ This e-mail message (including any attachments) is for the sole use of the intended recipient(s) and may contain confidential and privileged information. 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