Loved the comment on ATK, IPX, Neteui. Like Yogi Berra said this is
like deja vu all over again!
At 08:54 AM 2/22/2012, you wrote:
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
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:
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
On 2/22/2012 10:07 AM, Fred Mowchan wrote:
Loved the comment on ATK, IPX, Neteui. Like Yogi Berra said this is
like deja vu all over again!
Yes, routing breaks traditional AT, IPX, NetBEUI, etc.
So what clown woke up and said Hey! Let's just multicast it, that's
routable...
Jeff
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
To me, it's less about bandwidth than it is expectations that you'll change the
network design to accommodate these things because some of the require all
devices to be on the same class C subnet, don't do 1x for security, etc.
-Lee
-Original Message-
From: The EDUCAUSE Wireless
I assumed with mDNS it didn't just hit it's local subnet.
I've been on the nightmare side of getting Audio/Video stuff to talk
over IP with hundreds of classrooms and that isn't a whole lot of fun
either.
Mike Goebel
Network Programmer
Office of Information Technology
Western Michigan
My concern isn't so much the bandwidth associated with active connections
between these devices as it is the discovery process. All the bonjour
enabled devices are constantly attempting to discover other such devices,
most of which there's no value to the user in connecting to. If, like we
do,
It wasn't that many years ago that Apple defined Bonjour/mDNS as an
experimental protocol for small networks without a DNS server.
Our network isn't small. It has DNS servers. With some of our current
equipment, multicast just turns into a broadcast flood. (Multicast imaging
with Ghost
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
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 assume this also correlates with the size of client subnets and your
supported data rates. We're using /22s, so are a bit concerned.
-Original Message-
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Mike Goebel
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Hash: SHA1
On 2/22/2012 3:38 PM, Julian Y Koh wrote:
On Wed Feb 22 2012 09:24:46 Central Time, Jeff Kell wrote:
Yes, routing breaks traditional AT, IPX, NetBEUI, etc.
AppleTalk and IPX at least are totally routable protocols. :)
Well, you and I know
It's my understanding, at least in the 7.x train of Cisco wireless, that
multicast data is transmitted at the highest basic (required) rate. Management
frames can also be set to use the highest basic rate and/or kept at the lowest
basic rate. Of course, transmitting at the highest basic rate
I just heard an interesting solution for this. Since AppleTV is already
consumer tech and does not need Internet (their classroom use is pretty much
just AirPlay), the person went out and bought a cheap $30 wireless router off
the shelf at Walmart for each AppleTV. Each device is now on its own
And a 35-50 mW noise maker sits among several low-power cells, where there is
no such this as a spare channel. Most WLAN policies cover RF and forbid this
sort of thing... the wired network is part of the issue, competing wireless is
another.
-Lee
-Original Message-
From: The
On 2/22/2012 9:21 PM, Joel Coehoorn wrote:
I just heard an interesting solution for this. Since AppleTV is
already consumer tech and does not need Internet (their classroom use is
pretty much just AirPlay), the person went out and bought a cheap $30
wireless router off the shelf at Walmart for
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