RE: Disabling LEDs on APs

[Cosgrove, John]

Since we moved from old design (AP's down the hall) to new design (AP's in the 
rooms) I have seen patient rooms with medical tape and bandages covering up the 
LED in patient rooms.  It seems when you are sick and laying in a hospital bed 
and have trouble sleeping the single LED shining in your eyes are an issue.  I 
get it and understand it.

I am testing this in my office for now and plan to review with support staff 
but I will as a policy disable all LED's on AP's.  In the end it may not really 
be that useful considering they are all managed on the backend for up/down 
status.  If an AP is having issues connecting with the controller it flashes so 
when they see an LED they know there is a problem.

Definitely a patient satisfaction improvement.

John Cosgrove
Penn State Health/ Penn State College of Medicine

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Lee H Badman
Sent: Tuesday, September 6, 2016 9:57 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Disabling LEDs on APs

First-world problems... Curious if others have gone down this road in Residence 
Halls. We're not really being asked to, but are considering wholesale disabling 
LEDs on our Cisco APs in the dorms as a quality of life step. Has this caused 
anyone any pain when it comes to not being able to see the colors on the AP as 
status indication? Have you actually had requests to disable the LEDs? Overall 
experience with accommodating or denying the request?

Thanks-

Lee Badman


Lee Badman | Network Architect (CWDP, CWNA, CWSP, Mobility+)
Information Technology Services
206 Machinery Hall
120 Smith Drive
Syracuse, New York 13244
t 315.443.3003   f 315.443.4325   e lhbad...@syr.edu w 
its.syr.edu
SYRACUSE UNIVERSITY
syr.edu



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RE: Internal bandwidth testing applications

[Cosgrove, John]

There is an android Ap for speedtest.net.

https://play.google.com/store/apps/details?id=org.zwanoo.android.speedtest

May help you with some mobile divices.  Not sure if they have one for Apple.

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Voelker, Andy
Sent: Friday, August 26, 2016 11:38 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Internal bandwidth testing applications

We’ve been using the speedtest.net mini app to test on-campus bandwidth.  This 
helps troubleshoot wifi issues when people claim they aren’t getting the speed 
they want.  It eliminates the variable of internet congestions and bandwidth 
management that we would get from just going to speedtest.net.  It is also user 
friendly, so the help desk can send them a link and ask them to run it.

However, it is flash based which means it doesn’t work on mobile.  Also, ours 
just expired again (it does that every few months) and there doesn’t seem to be 
an update.  Good time to look for another tool.

Does anyone know of one we could host in our datacenter, that is user friendly, 
and that doesn’t require flash or java?

​
Andy Voelker
Network Technician/Wireless LAN Manager
Davidson College

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RE: Who wifi vendors does everyone use?

[Cosgrove, John]

Penn State College of Medicine,  Penn State Health
2000 Cisco AP
Prime Infrastructure
40k users per day…ish..


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Schuette, David
Sent: Wednesday, March 30, 2016 11:08 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Who wifi vendors does everyone use?

MSU Denver is an Aerohive shop



Sent from my Verizon Wireless 4G LTE smartphone
** Participation and subscription information for this EDUCAUSE 
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RE: [WIRELESS-LAN] Current state of DAS in Higher Ed?

[Cosgrove, John]

We included an expandable DAS in our Children’s Hospital 2 years ago as it was 
a requirement and the goal was to use this head end to expand it into existing 
buildings as well as college an research areas.  Now the migration of this 
traffic to Wi-Fi makes us have to re-think expanding this service.  The issue 
as always is timing.  The hope is that all consumer cell devices will be able 
to support a Wi-Fi connection and are we willing or able to wait for that while 
our users demand services.  It used to be the carriers responsibility to get 
their service to their customers.  Not any more it seems.

Right now we are considering expansion of the DAS as a standard or installing 
some femtocell type technology to put out some “spot fires” until the 
transition to Wi-Fi if that happens.

I have always said to invest in the Wi-Fi because you will end up investing in 
it in the end.

You may as well get the advantage of a well-designed and provisioned Wi-Fi 
network sooner rather then later.

John Cosgrove
Wireless Network Staff Specialist

Penn State Hershey Medical Center and Health System
Penn State College of Medicine
140 Sipe Ave
Hershey, PA 17033
Phone:   717-531-6131
EMail:jcosgr...@hmc.psu.edu
Web: http://pennstatehershey.org


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Pete Hoffswell
Sent: Wednesday, February 17, 2016 1:47 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Current state of DAS in Higher Ed?

Hiya -

What is the current state of DAS in Higher Ed?

Are you using DAS systems on your campus?

For coverage or capacity or both?

Glad you did?

I'm interested to hear stories.  We have a few LEEDS buildings that are quite 
Faraday cage-like.  Wonder if we should explore DAS, wait for wifi-calling, or 
what

-
Pete Hoffswell - Network Manager
pete.hoffsw...@davenport.edu
http://www.davenport.edu
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RE: [WIRELESS-LAN] Wireless LAN Professionals Conference in Phoenix

[Cosgrove, John]

I will be attending.  I have the joys of building Wi-Fi for Higher Education 
and Healthcare so I would not mind getting together during the week.  I will be 
attending a class over the weekend and the conference next week.

John Cosgrove
Wireless Network Staff Specialist

Penn State Hershey Medical Center and Health System
Penn State College of Medicine
140 Sipe Ave
Hershey, PA 17033
Phone:   717-531-6131
EMail:    jcosgr...@hmc.psu.edu
Web: http://pennstatehershey.org 
 

-Original Message-
From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Norman Elton
Sent: Wednesday, February 17, 2016 10:27 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Wireless LAN Professionals Conference in Phoenix

Anyone going to the WLPC in Phoenix this year?

http://wlanpros.com/WLPC2016

I'd be happy to line up a higher ed get-together if anyone else is going.

Norman Elton
College of William & Mary

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RE: [WIRELESS-LAN] Cisco WLC 8.0.120.0 (MR2) on 8510- good, bad?

[Cosgrove, John]

I am about to cut over to 8.0.120.0 on WiSM2 modules.  Abt 1500 AP’s so if 
anyone has any concerns or issues.  Not date planned and just doing pre-testing 
at this point but want to do this in the next 2 months.

Thx

John Cosgrove
Wireless Network Staff Specialist

Penn State Hershey Medical Center and Health System
Penn State College of Medicine
140 Sipe Ave
Hershey, PA 17033
Phone:   717-531-6131
EMail:jcosgr...@hmc.psu.edu
Web: http://pennstatehershey.org


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Paul Sedy
Sent: Monday, August 31, 2015 11:13 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco WLC 8.0.120.0 (MR2) on 8510- good, bad?

Is the bug only showing up on 8.0.120?  We are running 8.0.110.0.

Paul Sedy
The Master’s College
Director of IT Operations
21726 Placerita Canyon Rd, Santa Clarita, CA 91321
661.362.2340 | rps...@masters.edu

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Dan Brisson
Sent: Monday, August 31, 2015 5:46 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco WLC 8.0.120.0 (MR2) on 8510- good, bad?

Any update on the bug fix for the flapping 5ghz radios in 8.0.120?  I'm seeing 
a fair amount of them on my 3702i's.

Thanks!
-dan



Dan Brisson

Network Engineer

University of Vermont






On 7/28/15 4:45 AM, Scharloo, Gertjan wrote:
Hi Lee,

The 5 GHz radio message is a DFS problem and part of bug (CSCut98006)-and 
(CSCuq86269)


CSCut98006 DFS detections due to high energy profile signature – AP2600/3600 
specific fix

Fixed in Image  8.0.110.22 for 3600/2600 platforms

For 1700/2700/3700 will be coming soon, as there were some minor issues found 
during fix porting for this HW that are being resolved.

This week Cisco should be able to confirm ETA for this second part of the fix

(this is my TAC case SR 634977857 Flapping AP radio causing Alarms in Prime)


Gertjan Scharloo
ICT Consultant
_

Universiteit van Amsterdam | Hogeschool van Amsterdam

ICT Services
Leeuwenburg | kamer A9.36
Weesperzijde 190 | 1097 DZ Amsterdam
+31 (0)20 525 4885
Mobiel : +31(0) 61013-5880
www.uva.nl
uva.nl/profile/g.scharloo
Beschikbaar : Ma | - | Wo | Do | Vr |

Van: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] Namens Jess Walczak
Verzonden: dinsdag 28 juli 2015 01:25
Aan: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Onderwerp: Re: [WIRELESS-LAN] Cisco WLC 8.0.120.0 (MR2) on 8510- good, bad?

Lee,

I am also seeing what Scott is seeing with the nearly instantaneous radio 
resets on the 5Ghz side.  It doesn't seem to affect any client experience, 
either, but it does generate a LOT of noise from a monitoring point of view.  
We have had a TAC open about this since February, but honestly haven't really 
done any hardcore troubleshooting of the issue once we ascertained that it was 
not affecting service in any real way.  In Prime, I have it emailing a 
distribution group, and I get tons and tons of emails from the same exact time, 
one reading that the AP went down, and the other one reading that it came up, 
like so:
__
PI has detected a change in one or more alarms of category AP and severity 
Critical in Virtual Domain ROOT-DOMAIN.
The new severity of the following items is Clear:

1. Message: '802.11a/n' interface of AP 'OWS458-01-1142' associated to 
controller 'UST-WLC8510 (140.209.13.70)' is up.
Failure Source: AP OWS458-01-1142, Interface 802.11a/n
__
PI has detected one or more alarms of category AP and severity Critical in 
Virtual Domain ROOT-DOMAIN for the following items:

1. Message: '802.11a/n' interface of AP 'OWS458-01-1142' associated to 
controller 'UST-WLC8510 (140.209.13.70)' is down. Reason: Unknown Failure 
Source: AP OWS458-01-1142, Interface 802.11a/n
__
In fact, here, the "all clear" message arrived before the one telling about the 
down event, and both are timestamped for 4:21PM.  :-)

Our environment is an 8510 HA pair running 8.0.120.0 for the larger campus with 
900 or so APs, and an 5508 HA pair running 8.0.120.0 for the smaller campus 
with under 200 APs, and Prime 2.2.  The AP models we have are 1242's, 1142's, 
2702's (both i's and e's), and 702W's.  Also, we are just now going live with 
ISE 1.4 as well.
Jess Walczak
Sr. Network Analyst
University of St. Thomas
Saint Paul, MN

On Mon, Jul 27, 2015 at 5:18 PM, Scott McDermott 
> wrote:
My environment is not on that scale, but I’m still seeing a lot of 5GHz radios 
cycling between up and down states followed by a reset, then it will come 

RE: [WIRELESS-LAN] AW: [WIRELESS-LAN] To provide (wireless) service, or not to provide (wireless) service...

[Cosgrove, John]

Lee,

I agree with you on this.  The students don’t ask if there is air to breath on 
campus.  There is an unspoken expectation that air will be provided.  Wi-Fi is 
evolving as a basic expectation that does not need to be specified.

John Cosgrove
Wireless Staff Specialist
PSU/College of Medicine
MS Hershey Medical Center

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Lee H Badman
Sent: Thursday, May 14, 2015 8:50 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] AW: [WIRELESS-LAN] To provide (wireless) service, 
or not to provide (wireless) service...

Chuck- you might want to add the question “Do you assume that we have excellent 
Wi-Fi connectivity?” at the top of the list. For students that grew up 
wireless, my own experience shows that this very much is the assumption.  They 
are so used to it at home they don’t give it much thought- until it sucks.

-Lee

Lee Badman
Wireless/Network Architect
ITS, Syracuse University
315.443.3003
(Blog: http://wirednot.wordpress.com)

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Chuck Enfield
Sent: Wednesday, May 13, 2015 10:48 PM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] AW: [WIRELESS-LAN] To provide (wireless) service, 
or not to provide (wireless) service...

Thanks John.  FWIW, your characterization matches my experience in re the 
opinions of people in a position to know.  But every time I've been able to ask 
the basis for that opinion the evidence is either anecdotal or it's based on a 
survey of their peers.  This reeks of groupthink.

I have my own anecdotal evidence, no more reliable than others of course, that 
suggest connectivity isn't high on the priority list of prospective students.  
When presented with the opportunity, I've asked some of our Lion Ambassadors, 
who give campus tours to prospective students, what kind of questions they get 
about wireless and networking.  All four that I've asked said they don't get 
general questions about availability or performance.   They reported being 
asked about how to access the network during the tour, but that question was 
more likely to come from a parent than an applicant.

I think this is a very important question, but I don't have the resources to 
pursue the answer myself.  I eagerly await credible evidence one way or the 
other.

Chuck
On May 13, 2015 9:06 PM, Jon Young 
j...@network-plumbers.commailto:j...@network-plumbers.com wrote:

Chuck,
That's a very fair question and I don't believe there is solid data to support 
(or oppose) my contention.  I can only support my claim by consistent anecdotal 
opinions of those in the institutional position to know - our stakeholder 
interviews with personnel in Admissions, Res Life, Student Affairs strongly 
favor this opinion at most residential institutions.  Interestingly, in my 
experience this is less so for those institutions that have a larger 
demographic from economically disadvantaged backgrounds.  I'll leave the 
guessing as to why that is so to another forum.

As you are likely aware, the ACUTA survey supports my contention but I am 
unaware of any solid data surveying student recruitment in this area so it is 
accurate to say that my opinion is based strictly on anecdotal (but consistent) 
evidence from key stakeholders at a broad swath of institutions. Even the ACUTA 
survey is based on the opinions of the those institutional personnel, not 
direct student surveys.

That said, for internal political purposes, those internal stakeholder opinions 
tend to be crucial in gaining the backing needed for effective wireless 
initiatives.  As we all also know, higher-ed has a strong tendency to base 
decisions on what peers and aspirational peers are doing and the ACUTA survey 
can be an excellent tool for this.

Thanks,
Jon
Vantage Technology Consulting Group

On Wed, May 13, 2015 at 5:03 PM, Chuck Enfield 
chu...@psu.edumailto:chu...@psu.edu wrote:
John, I’ve often heard it said that wireless is important to recruiting and 
retention, but I’ve yet to find any solid foundation for the claim.  This may 
be because those search terms in Google return so much unrelated information 
that the good data is hard to find, or it could be that the claim is tenuous.  
Can you point us to any sources to substantiate it?  I’m skeptical, but open to 
evidence.  It would definitely change the way I think about our wireless 
services in relation to business needs.

Thanks,

Chuck Enfield
Manager, Wireless Systems  Engineering
Telecommunications  Networking Services
The Pennsylvania State University
110H, USB2, UP, PA 16802
ph: 814.863.8715tel:814.863.8715
fx: 814.865.3988tel:814.865.3988

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU]
 

RE: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - Hospital Environment

[Cosgrove, John]

Awarepoint is a “BLE” or Bluetooth low energy system.  These “night light” 
devices emit low power Bluetooth broadcasts that the location tags detect.  I 
believe they then talk back via wifi so the AP’s just need to have coverage to 
rx the tags.  Since the BLE location is known then the tags location is known.

There may be more to this system but those are the basics.

JC

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Jeffrey D. Sessler
Sent: Wednesday, April 29, 2015 4:14 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - 
Hospital Environment

Near my home, Kaiser just completed a new state-of-the-art hospital and for the 
patients, it’s has a very luxury feel to it. They’ve deployed Cisco for 
wireless (for public and private), and the AP’s are all below the ceiling, 
along with what appear to be cellular repeaters. Having the AP’s exposed 
doesn’t appear to diminish the look at all - after all, there are lots of other 
distractions on the ceilings such as fire sensors, call lights, etc.

What was really interesting is that they didn’t use the system for location 
tracking of patients/equipment. They had a separate system that used these 
tiny/flat/thin/flush “night light” looking devices that were plugged into power 
outlets everywhere, and they formed a huge mesh location network. Amazing.

Jeff

From: Cosgrove, John
Reply-To: 
wireless-lan@listserv.educause.edumailto:wireless-lan@listserv.educause.edu
Date: Wednesday, April 29, 2015 at 9:09 AM
To: 
wireless-lan@listserv.educause.edumailto:wireless-lan@listserv.educause.edu
Subject: Re: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - 
Hospital Environment

Thank you Chuck.  This is how I see it as well.  As the deployment gets more 
dense with AP’s walls become less of a factor.  My other big resistance to this 
is serviceability.  In a Hospital we have Infection Control issues.  You can’t 
just get a step ladder and start poking around trying to find where and/or what 
happened to your “hidden” AP.  Also over time other installers come thru the 
ceiling and do work so you never know what they may have done to your AP to get 
it out of their way.  Wi-Fi already has too many variables in involved and this 
would add yet another layer.

Thanks.

JC


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Chuck Enfield
Sent: Wednesday, April 29, 2015 9:36 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - 
Hospital Environment

The question for me isn’t really whether to or not above the ceiling work or 
not, it’s how predictable is it.  Coverage from AP’s, be they above or below 
the ceiling, is highly influenced by obstacle near the AP.  For the most part, 
there are more potential obstacle above the ceiling than below.  If you survey 
with the AP above the ceiling, and install the AP exactly where it was during 
the survey it should work fine.  If, on the other hand, the AP gets installed 1 
foot away from where it was during the survey, you could get weak or no signal 
somewhere you didn’t expect.  AP’s installed below the ceiling are less likely 
to have this problem.  In most cases, as long as they’re installed within a few 
feet of the surveyed location they’ll have the same coverage.  Exception occur 
if the AP get installed next to a large column, or bookcase, but these obstacle 
tend to be much more obvious to the installed, than light fixtures, air 
handlers, and ductwork.

That said, the more we design for density and the smaller our cells the less 
important this becomes.  If we assume the extreme case of one or more APs 
located in every room (and also assume we’re not doing something as dumb as 
setting the AP on top of florescent light fixtures or an HVAC duct), small 
differences in position above the ceiling are unlikely to have any appreciable 
effect on network performance.

FWIW, except for a tiny number of special cases we keep our APs (or at least 
the antennas) below the ceiling.  It provides more consistent results and 
reduces the coordination required between the designer and installers.

Chuck Enfield
Manager, Wireless Systems  Engineering
Telecommunications  Networking Services
The Pennsylvania State University
110H, USB2, UP, PA 16802
ph: 814.863.8715
fx: 814.865.3988

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Ian McDonald
Sent: Wednesday, April 29, 2015 8:34 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - 
Hospital Environment

As long as you don't put the AP right over a ceiling frame joint, we seem to do 
OK

Above Ceiling AP installations vs. Prediction - Hospital Environment

[Cosgrove, John]

Looking to hear about anyone doing above ceiling AP installations and see how 
the coverage compares to below the ceiling.  I also don't have much time or 
resources to play around with the design since it will be in a hospital 
environment.

I am pushing to keep the AP's below the ceiling but the renovation area is 
looking to have a Luxury feel.  Facilities tells me to think Luxury Hotel.  
Hotel wireless is not the same goal as Hospital wireless.

I suggested the paintable covers or the 2x2 drop ceiling enclosures.  I think 
they want a No See AP look.

Thank you for any comments on this issue.

John Cosgrove
Wireless Staff Specialist
Penn State Hershey Medical Center
Penn State College of Medicine
jcosgr...@hmc.psu.edu

**
Participation and subscription information for this EDUCAUSE Constituent Group 
discussion list can be found at http://www.educause.edu/groups/.

RE: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - Hospital Environment

[Cosgrove, John]

Thank you Chuck.  This is how I see it as well.  As the deployment gets more 
dense with AP’s walls become less of a factor.  My other big resistance to this 
is serviceability.  In a Hospital we have Infection Control issues.  You can’t 
just get a step ladder and start poking around trying to find where and/or what 
happened to your “hidden” AP.  Also over time other installers come thru the 
ceiling and do work so you never know what they may have done to your AP to get 
it out of their way.  Wi-Fi already has too many variables in involved and this 
would add yet another layer.

Thanks.

JC


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Chuck Enfield
Sent: Wednesday, April 29, 2015 9:36 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - 
Hospital Environment

The question for me isn’t really whether to or not above the ceiling work or 
not, it’s how predictable is it.  Coverage from AP’s, be they above or below 
the ceiling, is highly influenced by obstacle near the AP.  For the most part, 
there are more potential obstacle above the ceiling than below.  If you survey 
with the AP above the ceiling, and install the AP exactly where it was during 
the survey it should work fine.  If, on the other hand, the AP gets installed 1 
foot away from where it was during the survey, you could get weak or no signal 
somewhere you didn’t expect.  AP’s installed below the ceiling are less likely 
to have this problem.  In most cases, as long as they’re installed within a few 
feet of the surveyed location they’ll have the same coverage.  Exception occur 
if the AP get installed next to a large column, or bookcase, but these obstacle 
tend to be much more obvious to the installed, than light fixtures, air 
handlers, and ductwork.

That said, the more we design for density and the smaller our cells the less 
important this becomes.  If we assume the extreme case of one or more APs 
located in every room (and also assume we’re not doing something as dumb as 
setting the AP on top of florescent light fixtures or an HVAC duct), small 
differences in position above the ceiling are unlikely to have any appreciable 
effect on network performance.

FWIW, except for a tiny number of special cases we keep our APs (or at least 
the antennas) below the ceiling.  It provides more consistent results and 
reduces the coordination required between the designer and installers.

Chuck Enfield
Manager, Wireless Systems  Engineering
Telecommunications  Networking Services
The Pennsylvania State University
110H, USB2, UP, PA 16802
ph: 814.863.8715
fx: 814.865.3988

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Ian McDonald
Sent: Wednesday, April 29, 2015 8:34 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - 
Hospital Environment

As long as you don't put the AP right over a ceiling frame joint, we seem to do 
OK, again dependent on what else is up there.

Best regards

Sent from my phone, please excuse brevity and/or misspelling.

From: Harry Rauchmailto:rauc...@eckerd.edu
Sent: ‎29/‎04/‎2015 13:31
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - 
Hospital Environment
We have done both above ceiling and below ceiling and found that it depends 
what's above the ceiling. Ductwork, pipes, etc. affect about 10% of our 
coverage. We have also tested the newer in-the wall devices that could be 
applicable to your design. We chose Ruckus since a number of their devices, 
including in-the-wall are immediately meshable if necessary without any work on 
the controller's part.

Meshing has proven handy for us when we have had network feed issues at our 
dorms. As long as the antenna gets power it will automatically link to an 
active downlink antenna.
Harry Rauch Sr. Network Analyst Eckerd College 4200 - 54th Ave S St. 
Petersburg, FL 33711
On 4/29/15 8:15 AM, Cosgrove, John wrote:
Looking to hear about anyone doing above ceiling AP installations and see how 
the coverage compares to below the ceiling.  I also don’t have much time or 
resources to “play” around with the design since it will be in a hospital 
environment.

I am pushing to keep the AP’s below the ceiling but the renovation area is 
looking to have a “Luxury” feel.  Facilities tells me to think “Luxury Hotel”.  
Hotel wireless is not the same goal as Hospital wireless.

I suggested the paintable covers or the 2x2 drop ceiling enclosures.  I think 
they want a “No See AP” look.

Thank you for any comments on this issue.

John Cosgrove
Wireless Staff Specialist
Penn State Hershey Medical Center
Penn State College of Medicine

RE: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - Hospital Environment

[Cosgrove, John]

Agreed.  I was thinking along these lines as well.  If your walls are not 
“floor to floor” above the ceiling Auto RF will have a clear shot to all the 
other AP’s.

JC


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of McClintic, Thomas
Sent: Wednesday, April 29, 2015 10:46 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - 
Hospital Environment

Above ceiling installation with auto RF mechanisms like TPC can cause lower 
power settings when the walls do not go above the ceiling. We have many 
additions throughout our campus where the walls do not extend above the grid. 
An AP placed above that will behave much differently than expected.

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Chuck Enfield
Sent: Wednesday, April 29, 2015 8:36 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - 
Hospital Environment

The question for me isn’t really whether to or not above the ceiling work or 
not, it’s how predictable is it.  Coverage from AP’s, be they above or below 
the ceiling, is highly influenced by obstacle near the AP.  For the most part, 
there are more potential obstacle above the ceiling than below.  If you survey 
with the AP above the ceiling, and install the AP exactly where it was during 
the survey it should work fine.  If, on the other hand, the AP gets installed 1 
foot away from where it was during the survey, you could get weak or no signal 
somewhere you didn’t expect.  AP’s installed below the ceiling are less likely 
to have this problem.  In most cases, as long as they’re installed within a few 
feet of the surveyed location they’ll have the same coverage.  Exception occur 
if the AP get installed next to a large column, or bookcase, but these obstacle 
tend to be much more obvious to the installed, than light fixtures, air 
handlers, and ductwork.

That said, the more we design for density and the smaller our cells the less 
important this becomes.  If we assume the extreme case of one or more APs 
located in every room (and also assume we’re not doing something as dumb as 
setting the AP on top of florescent light fixtures or an HVAC duct), small 
differences in position above the ceiling are unlikely to have any appreciable 
effect on network performance.

FWIW, except for a tiny number of special cases we keep our APs (or at least 
the antennas) below the ceiling.  It provides more consistent results and 
reduces the coordination required between the designer and installers.

Chuck Enfield
Manager, Wireless Systems  Engineering
Telecommunications  Networking Services
The Pennsylvania State University
110H, USB2, UP, PA 16802
ph: 814.863.8715
fx: 814.865.3988

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Ian McDonald
Sent: Wednesday, April 29, 2015 8:34 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - 
Hospital Environment

As long as you don't put the AP right over a ceiling frame joint, we seem to do 
OK, again dependent on what else is up there.

Best regards

Sent from my phone, please excuse brevity and/or misspelling.

From: Harry Rauchmailto:rauc...@eckerd.edu
Sent: ‎29/‎04/‎2015 13:31
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Above Ceiling AP installations vs. Prediction - 
Hospital Environment
We have done both above ceiling and below ceiling and found that it depends 
what's above the ceiling. Ductwork, pipes, etc. affect about 10% of our 
coverage. We have also tested the newer in-the wall devices that could be 
applicable to your design. We chose Ruckus since a number of their devices, 
including in-the-wall are immediately meshable if necessary without any work on 
the controller's part.

Meshing has proven handy for us when we have had network feed issues at our 
dorms. As long as the antenna gets power it will automatically link to an 
active downlink antenna.
Harry Rauch Sr. Network Analyst Eckerd College 4200 - 54th Ave S St. 
Petersburg, FL 33711
On 4/29/15 8:15 AM, Cosgrove, John wrote:
Looking to hear about anyone doing above ceiling AP installations and see how 
the coverage compares to below the ceiling.  I also don’t have much time or 
resources to “play” around with the design since it will be in a hospital 
environment.

I am pushing to keep the AP’s below the ceiling but the renovation area is 
looking to have a “Luxury” feel.  Facilities tells me to think “Luxury Hotel”.  
Hotel wireless is not the same goal as Hospital wireless.

I suggested the paintable covers

RE: [WIRELESS-LAN] Wi-Fi Location tracking Success or Failure

[Cosgrove, John]

I am still at the starting edge and that is one of my questions as well.  There 
are a lot of cases where I can see that getting a device in “spitting distance” 
 pardon the expression would be very useful in many cases.  There are cases 
where they need more specific location resolution and that may require some 
other technology other than Wi-Fi.

I can see at this point use cases for Tags, People, and patients.  And I now 
each of these can also break down further.  I am starting to have these 
specific conversations with users.

I am just trying to get example of real people deploying a location service in 
their institution and see how it turned out.  Vendors want to Sell Sell Sell….

JC


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Luke Jenkins
Sent: Tuesday, April 21, 2015 6:28 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Wi-Fi Location tracking Success or Failure

Two big questions that will shape the discussion: what level of resolution are 
you expecting, and are you interested in location information for client 
devices (people) or tags (equipment)?

-Luke

=-=-=-=-=-=-=-=-=-=-=-=
Luke Jenkins
Network Engineer
Weber State University


On Tue, Apr 21, 2015 at 7:13 AM, Cosgrove, John 
jcosgr...@hmc.psu.edumailto:jcosgr...@hmc.psu.edu wrote:
Has anyone out here been involved in any Wi-Fi location tracking projects?  Not 
only looking for the successes but interested in the failures.

So many vendor videos to watch to see how this is “better than sliced bread”.

I have over the course of time been involved with discussions from staff about 
the need to have a system to do this but nobody have really been successful in 
communication what they really need and how this information will manifest to 
some work improvement.

We are a University Hospital so this is the main driver for location tracking.

Feel free to respond off line if you like.  Especially failures if you don’t 
wish to air that here.

Thanks to all for the great information and experiences found here.

John Cosgrove
Wireless Staff Specialist
Penn State Hershey Medical Center
Penn State College of Medicine
jcosgr...@hmc.psu.edumailto:jcosgr...@hmc.psu.edu


** 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/.

RE: [WIRELESS-LAN] Wi-Fi Location tracking Success or Failure

[Cosgrove, John]

Well the next level of resolution from that is “Swing a dead cat” radius.  My 
pardon to all the cat lovers out there.

Lol.

JC

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Hunter Fuller
Sent: Wednesday, April 22, 2015 1:56 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Wi-Fi Location tracking Success or Failure


John,

Not sure what standard spitting distance is, but that seems like fairly good 
resolution. Maybe the distance I can spit is lower than average, however.

--
Hunter Fuller
OIT

Sent from my phone.
On Apr 22, 2015 8:12 AM, Cosgrove, John 
jcosgr...@hmc.psu.edumailto:jcosgr...@hmc.psu.edu wrote:
I am still at the starting edge and that is one of my questions as well.  There 
are a lot of cases where I can see that getting a device in “spitting distance” 
 pardon the expression would be very useful in many cases.  There are cases 
where they need more specific location resolution and that may require some 
other technology other than Wi-Fi.

I can see at this point use cases for Tags, People, and patients.  And I now 
each of these can also break down further.  I am starting to have these 
specific conversations with users.

I am just trying to get example of real people deploying a location service in 
their institution and see how it turned out.  Vendors want to Sell Sell Sell….

JC


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU]
 On Behalf Of Luke Jenkins
Sent: Tuesday, April 21, 2015 6:28 PM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Wi-Fi Location tracking Success or Failure

Two big questions that will shape the discussion: what level of resolution are 
you expecting, and are you interested in location information for client 
devices (people) or tags (equipment)?

-Luke

=-=-=-=-=-=-=-=-=-=-=-=
Luke Jenkins
Network Engineer
Weber State University


On Tue, Apr 21, 2015 at 7:13 AM, Cosgrove, John 
jcosgr...@hmc.psu.edumailto:jcosgr...@hmc.psu.edu wrote:
Has anyone out here been involved in any Wi-Fi location tracking projects?  Not 
only looking for the successes but interested in the failures.

So many vendor videos to watch to see how this is “better than sliced bread”.

I have over the course of time been involved with discussions from staff about 
the need to have a system to do this but nobody have really been successful in 
communication what they really need and how this information will manifest to 
some work improvement.

We are a University Hospital so this is the main driver for location tracking.

Feel free to respond off line if you like.  Especially failures if you don’t 
wish to air that here.

Thanks to all for the great information and experiences found here.

John Cosgrove
Wireless Staff Specialist
Penn State Hershey Medical Center
Penn State College of Medicine
jcosgr...@hmc.psu.edumailto:jcosgr...@hmc.psu.edu


** 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/.

Wi-Fi Location tracking Success or Failure

[Cosgrove, John]

Has anyone out here been involved in any Wi-Fi location tracking projects?  Not 
only looking for the successes but interested in the failures.

So many vendor videos to watch to see how this is better than sliced bread.

I have over the course of time been involved with discussions from staff about 
the need to have a system to do this but nobody have really been successful in 
communication what they really need and how this information will manifest to 
some work improvement.

We are a University Hospital so this is the main driver for location tracking.

Feel free to respond off line if you like.  Especially failures if you don't 
wish to air that here.

Thanks to all for the great information and experiences found here.

John Cosgrove
Wireless Staff Specialist
Penn State Hershey Medical Center
Penn State College of Medicine
jcosgr...@hmc.psu.edumailto:jcosgr...@hmc.psu.edu



**
Participation and subscription information for this EDUCAUSE Constituent Group 
discussion list can be found at http://www.educause.edu/groups/.

RE: [WIRELESS-LAN] Simple Wireless Tools - Open Signal

[Cosgrove, John]

Awesome Idea Christopher.  I will try this as well.

JC

-Original Message-
From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Johnson, Christopher
Sent: Friday, April 10, 2015 3:34 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Simple Wireless Tools - Open Signal

I've been using a combination of the Aruba Utilities and Wifi Analyzer apps on 
Android. If this is going to be used by support staff, you could do a mass 
export of your BSSIDs/AP Names into a text file, format it, and then import 
that into WifiAnalyzer via the Alias option. Whenever a support staff member 
checks WiFiAnalyzer, they'll see exactly which AP they are associated to. 
Depending on how many BSSIDs you have, it may take WiFiAnalyzer a few minutes 
to import the file (may have to click Wait once when the phone says Not 
Responding), but it does import. However, this is assuming your BSSIDs don't 
reset/randomize during reboots.

Format:
#bssid1|alias ofbssid1
bssid|AP-Name-[ssid]-Band

Example
36:01:02:XX:XX:XX|MD-01-125-[resnet]-5GHz

I specify the AP Name, SSID, and Band because every single alias has to be 
unique. 

Christopher Johnson
Wireless Network Engineer
AT Infrastructure Operations  Networking Illinois State University
Direct: (309) 438-8444

-Original Message-
From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Dennis Xu
Sent: Friday, April 10, 2015 8:55 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Simple Wireless Tools - Open Signal

I recommend the Aruba Utilities app on Android. 

---
Dennis Xu, MASc, CCIE #13056
Analyst 3, Network Infrastructure
Computing and Communications Services(CCS) University of Guelph

519-824-4120 Ext 56217
d...@uoguelph.ca
www.uoguelph.ca/ccs

- Original Message -
From: John Watters john.watt...@ua.edu
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Sent: Friday, April 10, 2015 9:49:13 AM
Subject: Re: [WIRELESS-LAN] Simple Wireless Tools - Open Signal


OK, so why doesn't the dashboard ever open (been running 10 minutes so far). 
Speedtest did fine, did not show Verizon cell coverage even though that is my 
provider, stats look good. But, the dashboard looks like it could be 
interesting if I could only see it. From my office, I should see at least 8 
SSIDs, only one of which is open. All I get is Looking for nearby WiFi 
Clues??




-jcw
  [UA Logo]

John Watters   The University of Alabama
Office of Information Technology
205-348-3992

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Lee H Badman
Sent: Friday, April 10, 2015 8:37 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Simple Wireless Tools

John-

Indulge me on a little shameless self-promotion: 
http://it.toolbox.com/blogs/wirelessfront/got-an-android-tablet-build-a-decent-network-analyzer-suite-for-free-64467
 and 
http://www.networkcomputing.com/wireless-infrastructure/10-free-and-low-cost-mobile-wireless-tools/d/d-id/1234101
 also on Windows tablets, 
http://www.nirsoft.net/utils/wifi_information_view.html is free and nice.

Lee Badman
Wireless/Network Architect
ITS, Syracuse University
315.443.3003
(Blog: http://wirednot.wordpress.com)

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Cosgrove, John
Sent: Friday, April 10, 2015 8:51 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Simple Wireless Tools

I am looking for some type of simple wireless tool for support staff to use to 
simply check Wi-Fi signal in a particular area.

Something that could easily limit the view to our corporate SSID.

Read out the Rx signal strength and maybe S/N reading.

Hopefully the AP name. (Cisco environment)

Channel number/ability to limit between 2.4 and 5Ghz.

Hoping form something free and easy to use without having to filter down each 
time as there are many people in the support area but not so skilled in 
interpreting wireless information.

I already use Air Magnet and Planner and have some of the WiSpy Spectrum 
Analyzers and are great for me.  Something  to get a little more information 
from the I have 2 bars people.

Thanks.

John Cosgrove
Wireless Staff Specialist
Penn State Hershey Medical Center / College of Medicine
717-531-6131


** 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

RE: Simple Wireless Tools

[Cosgrove, John]

Thank you all for the great suggestions.  Some I knew about but others new to 
me.  Will investigate and suggest something for my team.

JC


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Cosgrove, John
Sent: Friday, April 10, 2015 8:51 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Simple Wireless Tools

I am looking for some type of simple wireless tool for support staff to use to 
simply check Wi-Fi signal in a particular area.

Something that could easily limit the view to our corporate SSID.

Read out the Rx signal strength and maybe S/N reading.

Hopefully the AP name. (Cisco environment)

Channel number/ability to limit between 2.4 and 5Ghz.

Hoping form something free and easy to use without having to filter down each 
time as there are many people in the support area but not so skilled in 
interpreting wireless information.

I already use Air Magnet and Planner and have some of the WiSpy Spectrum 
Analyzers and are great for me.  Something  to get a little more information 
from the I have 2 bars people.

Thanks.

John Cosgrove
Wireless Staff Specialist
Penn State Hershey Medical Center / College of Medicine
717-531-6131


** 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/.

RE: 1GBE as a bottleneck to APs?

[Cosgrove, John]

Yes the math and real performance does not add up.  I am comfortable relying on 
1 gig uplinks for now.  There may be special case areas the you could 
consider needing more uplink but I agree with many of the other responders to 
this.  Legacy clients,  consumer grade clients,  designing toward capacity 
rather coverage really divide the load and reduce some of the chances of 
hitting the Gig bottleneck.

I have also seen a decrease in client throughput capability now that clients 
are moving from N to ac.  All of our N cards were 3 streams.  All the new 
PC's with ac cards are 2 Streams.  If I am designing my 5Ghz at 40 Meg 
channels the older 3 stream N can run faster than a new ac client minus the 
other ac features of course.

I have recently seen some installs where 2 or 3 cables are pulled per AP and 
have been considering this but I think I will keep it to 1 cable at this point. 
 Tracking and storing those extra cables will really multiply idle cabling in 
our closets.  I am sure that by the time we need that much more uplink per AP 
we may be in the area doing other upgrades as well.

John Cosgrove
Network Staff Specialist
Penn State Hershey College of Medicine



From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Hinson, Matthew P
Sent: Tuesday, March 24, 2015 10:38 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] 1GBE as a bottleneck to APs?

I've seen a few articles here and there regarding possible solutions for the 
gigabit bottleneck as it pertains to .11ac access points. Said solutions 
include Cisco's forthcoming protocols for 2.5G and 5G over CAT5 cabling as well 
as LACP'ing two gigabit ports per switch and AP as some vendors suggest...

My question for the group is: Has anyone actually seen a throughput issue using 
gigabit to the edge? Certainly your distribution layer gear could be a 
limitation if it's not specced correctly, but I've just never seen a situation 
where I've wished for more than 1000BASE-T to an AP. Our fastest 802.11ac 
access points can only hit 600-700mbit/s real TCP throughput, and that's in 
ideal, almost laboratory conditions.

Thoughts?

Thank you!
Matthew Hinson
Network Operations
** Participation and subscription information for this EDUCAUSE 
Constituent Group discussion list can be found at 
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**
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Mixing ac AP types

[Cosgrove, John]

I am designing a new wireless placement for a 5 story building and I have been 
considering mixing 802.11ac AP types.

Meaning.  Some Cisco 1702's,2702's and 3702's.  Placement depending on 
estimated client densities.

Example.  Conference rooms may have 3702's yet open areas with less people 
population may have a 1702 or 2702.

I usually hear from people to Keep it all consistent and the same and I 
remember in the old days if you mixed G in with b-only ap's often clients 
would grab the G and never let go no matter how bad the signal got.  I am 
thinking if I at least keep things in the same family of technology it should 
work out.

AP's are a huge multiplier in a project cost and I was wondering if anyone else 
looked at approaching it this way.

Looking forward to your thoughts and suggestions.

Thank you.

John Cosgrove
Network Specialist
Penn State Hershey Medical Center
Penn State College of Medicine
Hershey, PA


**
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discussion list can be found at http://www.educause.edu/groups/.

RE: [WIRELESS-LAN] WiSM-2 and 7.6.120.0....

[Cosgrove, John]

I am testing 7.6.120.0 on a 5508 test controller with only 8 AP's.  Have 
noticed AP's crashing periodically.  I did notice my FUS was not up to level on 
this unit so I will be upgrading that before loading up 7.6.130.0.  Looking and 
comparing release notes has convinced me to focus my attention on the 130 
version as there seems to be a lot more fixes rolled up in that one.

John Cosgrove
Wireless Staff Specialist
Penn State Hershey Medical Center

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Danny Eaton
Sent: Wednesday, September 03, 2014 7:34 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] WiSM-2 and 7.6.120.0

Is anyone seeing controller crashes on 7.6.120.0 with a high load?  We upgrade 
to 7.6.120.0 in May, but haven't had a real load (over 5,000 clients, say) 
until this past two weeks.

We had something happen on Friday.  We did do a therapeutic reboot on 
Saturday morning (at oh my God it's 3:30 in the morning!).  However, today it 
repeated.  While investigating, we discovered the primary in one of the 
clusters apparently failed and went into maintenance mode.  However, the active 
secondary still showed standby hot, so we did a failover - which caused an 
outage (uh oh).  While consoled in, we got the maintenance moded primary back 
up, and was bringing the secondary back up, when we found this:

pmallocProcessMemoryCorruption called by file(rrmSocket_wlc.c), line(128), for 
size(2048), failureType = (4)
this entry's  previous access was by:  file(capwap_ac_sm.c), line(7393)
(pmallocProcessMemoryCorruption): 
pmallocGenericCrashInfo=(++PMALLOC_POISONED_AREA_CORRUPTION)
(pmallocProcessMemoryCorruption): thread ID(349256224)
(pmallocProcessMemoryCorruption): thread name(Unknown task name, task id = 
(349256224))
(pmallocProcessMemoryCorruption): current access file name(rrmSocket_wlc.c)
(pmallocProcessMemoryCorruption): previous-access file name(capwap_ac_sm.c)
pmallocProcessMemoryCorruption called by file(rrmSocket_wlc.c), line(128), for 
size(2048), failureType = (4)
this entry's  previous access was by:  file(capwap_ac_sm.c), line(7393)
(pmallocProcessMemoryCorruption): 
pmallocGenericCrashInfo=(++PMALLOC_POISONED_AREA_CORRUPTION)
(pmallocProcessMemoryCorruption): thread ID(349256224)
(pmallocProcessMemoryCorruption): thread name(Unknown task name, task id = 
(349256224))
(pmallocProcessMemoryCorruption): current access file name(rrmSocket_wlc.c)
(pmallocProcessMemoryCorruption): previous-access file name(capwap_ac_sm.c)
Dumping a core. This can take a few minutes...
Controller crashed Queue Woken up jiffies = 4295262648

Obviously, that is bad (and yes, we're opening a TAC case).

tl;dr

Has anyone else seen oddities with crashes on 7.6.120.0, and if 
so, did you upgrade?  To 7.6.130.0, or 8.0.100.0?  I'm running 8.0.100.0 in the 
lab, but light load.  (which is what we did on 7.6.120.0 since May)...

Thoughts?  Opinions?



   Respectfully,

   Danny Eaton

   Snr. Network Architect
   Networking, Telecommunications,  Operations
   Rice University, IT
   Mudd Bldg, RM #205
   Jones College Associate
   Office - 713-348-5233
   Cellular - 832-247-7496
   dannyea...@rice.edumailto:dannyea...@rice.edu

   Soli Deo Gloria
   Matt 18:4-6

G.K. Chesterton, Christianity has not been tried and found wanting.  It's been 
found hard and left untried.




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