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Message from donald_wright@brown.edu

All,
     It seems an alarmingly high number of wireless devices have returned to our campus this week.  After at least of year of steadily increasing numbers, we are now seeing a roughly 40% increase since last December.  At first I didn't believe what I was seeing and opened a case with the vendor to confirm reporting was accurate.  Tied into this, we upgraded by a major version earlier this month and I thought this could be related.  Apparently not the case, everything we've looked at tells us that the numbers are accurate.  I'm still looking a stats, but haven't been able to come up with anything yet.
    Is anyone else seeing this magnitude of increase in devices over winter break ?

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

Comments

Message from jethro.binks@strath.ac.uk

On Thu, 26 Jan 2012, Wright, Don wrote: > It seems an alarmingly high number of wireless devices have > returned to our campus this week. After at least of year of steadily > increasing numbers, we are now seeing a roughly 40% increase since last > December. At first I didn't believe what I was seeing and opened a case > with the vendor to confirm reporting was accurate. Tied into this, we > upgraded by a major version earlier this month and I thought this could > be related. Apparently not the case, everything we've looked at tells > us that the numbers are accurate. I'm still looking a stats, but > haven't been able to come up with anything yet. > Is anyone else seeing this magnitude of increase in devices over winter > break ? Be interesting for you to identify a breakdown of proportions of device type if you can; especially if you have similar for previous months. My guess is Santa's tablet/i* factory was working overtime to meet a large Christmas delivery timetable. Jethro. . . . . . . . . . . . . . . . . . . . . . . . . . Jethro R Binks, Network Manager, Information Services Directorate, University Of Strathclyde, Glasgow, UK The University of Strathclyde is a charitable body, registered in Scotland, number SC015263. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Message from rich.fulton@gmail.com

If you saw Apple's earning's they sold a ton over the holidays. It wouldn't be surprising to see a significant increase in wifi devices on higher ed campuses. 



   /rf


Message from marcelo.lew@du.edu

Yes, same here.  We just added a few more subnets to our pool, have been running out of addresses since classes started January 3rd.

 

Marcelo Lew

Wireless Enterprise Administrator

University Technology Services

University of Denver

Desk: (303) 871-6523

Cell: (303) 669-4217

Fax:  (303) 871-5900

Email: mlew@du.edu

 

 

Message from j2robert@odu.edu

Same here, I’ve had to expand subnets for 15 buildings since the semester started (we give each building a subnet), and looking at the logs I’ve got another 5 or so that will need it in the near future.  More buildings that used to be good on a /24 are requiring a /23, and buildings that had /23s are starting to need /22s.

 

Josh Robertson

Network Systems Senior Engineer

Old Dominion University

Office of Computing & Communications Services

(757)683-5046

j2robert@odu.edu

http://occs.odu.edu/

 

Message from kconnell@ryerson.ca

We had room for 6k concurrent users before xmas. That's was bumped up to 10k over the holidays and we're seeing 11k trying to associate at times....so we still don't have enough...


Ken Connell
Intermediate Network Engineer
Computer & Communication Services
Ryerson University
350 Victoria St
RM AB50
Toronto, Ont
M5B 2K3
416-979-5000 x6709
From: "Wright, Don" <donald_wright@BROWN.EDU>
Sender: The EDUCAUSE Wireless Issues Constituent Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
Date: Thu, 26 Jan 2012 11:09:48 -0500
To: <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
ReplyTo: The EDUCAUSE Wireless Issues Constituent Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
Subject: [WIRELESS-LAN] Very high number of wireless devices returning from break

All,
     It seems an alarmingly high number of wireless devices have returned to our campus this week.  After at least of year of steadily increasing numbers, we are now seeing a roughly 40% increase since last December.  At first I didn't believe what I was seeing and opened a case with the vendor to confirm reporting was accurate.  Tied into this, we upgraded by a major version earlier this month and I thought this could be related.  Apparently not the case, everything we've looked at tells us that the numbers are accurate.  I'm still looking a stats, but haven't been able to come up with anything yet.
    Is anyone else seeing this magnitude of increase in devices over winter break ?

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

We are experiencing the same issues at here at Valencia College. On our larger campuses or average went from 1000-1500 to 6000-8000. We changed our authentication from BlueSocket to SafeConnect and we had the same concerns and had the vendor validate the counts. Our only thing we can think of is that the Bluesocket was limiting in some way and the additional devices students/faculty/staff are carrying has increased dramatically.

 

Bruce Marshall

Valencia College

Message from dannyeaton@rice.edu

We're seeing some of it, as well. Here at Rice University, we've seen an increase of approximately 800 network devices on wireless from 4 Dec 2011 to today. Our total on wireless 4 Dec was 6917, and on the 22 Jan 2012 it was 7794. Our wireless is primarily split between authenticated and visitor. We use Cisco WiSM's, and have our staff divided out on 8 /25's per WLC, and our students divided out on 8 /25's per WLC based on a hash done on radius server from their network ID. The hash is load-balanced to return "staff01" or "student03". This gives them a sort of "stickiness", so they'll be in the same VLAN every time. However, obviously "student03" is a different /25 on every WLC. With this load-balancing (of a sort), we haven't really seen any issues with the staff or student wireless. However, with the visitors, we use web-auth to force them to acknowledge the acceptable use policy, there is no radius return to load-balance. So, on the legacy APs (1000 series, we're in the process of upgrading) we use AP-Groups to assign a building, floor, or section to a specific visitor /25. We're moving towards using the VLAN-GROUP function in the 7.0.116.0 code for visitors, which will give us the ability to combine all 8 /25's for visitor on each controller. In the past, when large visiting groups come on campus, we have had issues with running out of DHCP leases (it's a /25, after all), but instead of increasing the broadcast domains (to a /24, or larger), we've opted to split the AP-Groups out even tighter than building - to a floor, or even a specific area (dining commons with 5 APs = one /25). All, It seems an alarmingly high number of wireless devices have returned to our campus this week. After at least of year of steadily increasing numbers, we are now seeing a roughly 40% increase since last December. At first I didn't believe what I was seeing and opened a case with the vendor to confirm reporting was accurate. Tied into this, we upgraded by a major version earlier this month and I thought this could be related. Apparently not the case, everything we've looked at tells us that the numbers are accurate. I'm still looking a stats, but haven't been able to come up with anything yet. Is anyone else seeing this magnitude of increase in devices over winter break ? Don Wright Brown University ********** 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/.
Message from holland.112@osu.edu

We have not seen a massive increase after break, but when compared to last year at this time, we have increased to about 50% more concurrent clients.

Clients over the last year


------------------------------------------------------------
Ryan Holland | Network Engineer
Office of the CIO | The Ohio State University
614-292-9906    | holland.112@osu.edu
------------------------------------------------------------
See an OCIO employee doing something great?  Give Kudos!

For us, the swell in mobile devices started after Black Friday this season. I have tracking that covers four years. There was a slight adoption of mobile devices following Christmas 2 years ago, last years significant growth began just before the holiday but peaked afterward. Mobile has roughly doubled again this year - but almost entirely before the holiday. An interesting trend that we need to track is concurrent use. So far this semester we are seeing general computing devices less frequently so our pool utilization after the break thus far is equal to before the break totals... but, the peak is expected to hit around mid term when students have both devices active at the same time. 

 

Randall Grimshaw rgrimsha@syr.edu
 
We are seeing a high number as well but it is in the anticipated increase. We have everything from clocks using ip to IPtv and all things wireless. We generally try and stay ahead of it or at least not fall behind on our wireless. We anticipate a reduction on wired devices by 90% next year and an increase of 150% on the wireless.

Harry Rauch Sr. Network Analyst Eckerd College 4200 - 54th Ave S St. Petersburg, FL 33711

Hi Don,

 

Can you give actual numbers? I only ask because 40% can sound huge, but depends on where you started from and you have me curious.

 

Lee H. Badman

Wireless/Network Engineer

Information Technology and Services

Adjunct Instructor, iSchool

Syracuse University

315 443-3003

 

 

Message from lists.educause.wireless@change.nightwind.net

We've seen an increase in number of devices associating as well. Nothing nearly as impressive as everyone else's numbers in terms of total quantity, but the jump for us from peaks of 300 associated to over 400 associated clients is definitely noticeable. -- Nick Kartsioukas Cuesta College Computer Services 805-546-3248 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Message from brian.david@bc.edu

Don,

Yes same for us…Lots of mobile device…Everybody got a smart phone or a tablet for Christmas. It makes up to at least half of our average 7K users per day.

 

 

Brian J David

Network Systems Engineer

Boston College

 

Message from jcoehoorn@york.edu

It's possible that since you are on a new version of the software, and the current numbers have been verified, that the old version of the software was under-reporting.

But more likely it's a real increase. I could be new toys for Christmas, and it could be the old software didn't work as well for certain classes of device (possibly related to authentication), such that you're just now seeing a lot of them.

Either way, I wouldn't worry so much about the number of devices, as it's still the same number of students using them. If the same student has a laptop, wifi smartphone, iPad, and wifi gaming console, they're only likely to be using one of those at a time. So instead, focus on how these devices translate into air time use.

On Thursday, January 26, 2012, Nick Kartsioukas <lists.educause.wireless@change.nightwind.net> wrote:
> We've seen an increase in number of devices associating as well.
> Nothing nearly as impressive as everyone else's numbers in terms of
> total quantity, but the jump for us from peaks of 300 associated to over
> 400 associated clients is definitely noticeable.
> --
> Nick Kartsioukas
> Cuesta College Computer Services
> 805-546-3248
>
> **********
> Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
>

--



Joel Coehoorn
IT Director
York College, Nebraska
402.363.5603
jcoehoorn@york.edu


     

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

You sure you're not looking at our campus?   ;-)      dang, those numbers are eerily similar …..

 

 

-- Jim Gogan   / Director,  ITS Networking

    University of North Carolina at Chapel Hill

 

From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Ryan Holland
Sent: Thursday, January 26, 2012 12:03 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Very high number of wireless devices returning from break

 

We have not seen a massive increase after break, but when compared to last year at this time, we have increased to about 50% more concurrent clients.

 

Clients over the last year

 


------------------------------------------------------------

Ryan Holland       |         Network Engineer

Office of the CIO   |         The Ohio State University
614-292-9906        |         holland.112@osu.edu

------------------------------------------------------------

See an OCIO employee doing something great?  Give Kudos!

 

On 1/26/2012 1:02 PM, Gogan, James P wrote:

You sure you're not looking at our campus?   ;-)      dang, those numbers are eerily similar …..

 

 



Ditto...


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

Message from toivo@usf.edu

We’ve seen a constant increase, but not yet a huge jump since the winter break. I wonder what we’re doing wrong… :-)

 

Toivo Voll

Network Administrator

Information Technology Communications

University of South Florida

 

.

I disagree slightly with the conclusion below. I suggest we need to focus on how these devices translate into DHCP leases... which unfortunately does translate into concurrent use. A student may not be gazing into their smartphone while writing that big paper on their notebook... but they did just obtain leases for both. They may also have a third device watching hulu in the background.

 

Randy


>> Either way, I wouldn't worry so much about the number of devices,

>> as it's still the same number of students using them.
>> If the same student has a laptop, wifi smartphone, iPad, and wifi gaming console,
>> they're only likely to be using one of those at a time. So instead,
>> focus on how these devices translate into air time use.

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

While I have not looked at any hard numbers yet, we have had complaints about poor wireless in areas that have never been a problem in the past. We have checked all the hardware and everything is running, I think we may be over saturating. What do you find to be your peak hours for wireless? I checked from 10 to 1 today we had approx. 1500 wireless connections. Last night from 8 to 10pm we had 6500. Is this what everyone else is finding? Sara M. Laird Network Administrator Mount Saint Mary's University 301.447.5014 Faith Discovery Leadership Community ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
We don't see the increase here. --- Dennis Xu Network Analyst, Computing and Communication Services University of Guelph 5198244120 x 56217
Remember too that many consumer devices have lesser radios in them than laptops from the transmit (and maybe receive) perspectives. If they are on cell edges, they may not perform like older devices with better WAN interfaces do. Your management software should be able to tell how many clients are or were on each AP in question, and live client views will tell signal quality values to help quantify all of this. Assuming you have capable management program, of course. :) Lee H. Badman Wireless/Network Engineer Information Technology and Services Adjunct Instructor, iSchool Syracuse University 315 443-3003
a.) our peak is in the late lunch until dinner b.) a trick that I use to measure pool utilization is to watch the 'lts' numbers in local3.log as my peered DHCP servers balance the pools. (I also monitor leases and calculate pool fluxuations - but that takes longer to explain). Randall Grimshaw rgrimsha@syr.edu ________________________________________
please let me clarify... I think of these as the 'lts' messages... but the free and backup numbers are what you would actualy reference. My apologies. Randall Grimshaw rgrimsha@syr.edu ________________________________________
I don't see a dramatic increase after December, but compared to last year at this same time, the number of concurrent associations is up nearly 60%. That's with no net increase in student FTE population.
 
Jeff

>>> On Thursday, January 26, 2012 at 8:09 AM, in message <CAEuPhV9-0fUOFURvtk_50sOA6BDmsoLZ5LRk9KLpZgQaAFrPmA@mail.gmail.com>, "Wright, Don" <donald_wright@BROWN.EDU> wrote:
All,
It seems an alarmingly high number of wireless devices have returned to our campus this week. After at least of year of steadily increasing numbers, we are now seeing a roughly 40% increase since last December. At first I didn't believe what I was seeing and opened a case with the vendor to confirm reporting was accurate. Tied into this, we upgraded by a major version earlier this month and I thought this could be related. Apparently not the case, everything we've looked at tells us that the numbers are accurate. I'm still looking a stats, but haven't been able to come up with anything yet.
Is anyone else seeing this magnitude of increase in devices over winter break ?

Don Wright
Brown University
********** 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/.

Message from j2robert@odu.edu

Our peak usage tends to be between 1pm and 7pm Monday-Thursday. We have about 8k concurrent users during those times. Josh Robertson Network Systems Senior Engineer Old Dominion University Office of Computing & Communications Services (757)683-5046 j2robert@odu.edu http://occs.odu.edu/
Message from donald_wright@brown.edu

   Here's my Airwave graph for comparison and now represents 11,000+ users.  The really surprising increase in the middle group (green) which is my captive portal.  This has been a steady ~1800 average over the last year, now pushing 4000.



Don Wright
Brown University



Message from kohster@northwestern.edu

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 We have not seen a huge increase in our wireless usage since the winter break (right around 10K devices max). Maybe all of our users already loaded up on their devices over the summer? - -- Julian Y. Koh Manager, Network Transport Telecommunications and Network Services Northwestern University PGP Public Key: -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org iEYEARECAAYFAk8hzg8ACgkQDlQHnMkeAWOUZwCfQ15gEW2HrnCNPEF5Em241wWQ FIYAn2F3UvbB5UyLy7uF7ODlt9FxvCig =Iqg5 -----END PGP SIGNATURE----- ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Clients and usage at UT Knoxville.

I don't know how well Aruba and Airwave do the bandwidth calculations,
but it seems that the increase of clients doesn't increase usage!
(Three devices but only two hands and one brain ;-)

Yes, definitely electromagnetism and DHCP lease management challenges,
but strangely in our case, even though everyone goes to the cloud according to Wall-Street,
not much of a "pipe" issue.

Don't you love Summer and Christmas break...

Philippe
Univ. of TN




On Jan 26, 2012, at 4:54 PM, Wright, Don wrote:

   Here's my Airwave graph for comparison and now represents 11,000+ users.  The really surprising increase in the middle group (green) which is my captive portal.  This has been a steady ~1800 average over the last year, now pushing 4000.

<Screen shot 2012-01-26 at 4.50.15 PM.png>

Don Wright
Brown University



I would be interested in any research into mobile device IP address consumption folks could point us towards.  We see curious address consumption behavior by mobile devices, but have not done the testing to determine if it is the device's OS consuming all the addresses (iOS is our campus' dominant mobile OS) or an artifact of our DHCP/802.1x/Controller configurations.

We've seen a 12% device increase since the break (from 25K to 28K simultaneous connections), not as large an increase as reported by others.

--
William C. Green                              e-mail:  green@austin.utexas.edu
Director, Networking and Telecommunications   phone:   +1 512-475-9295
ITS (Information Technology Services)         fax:     +1 512-471-2449
University of Texas
1 University Station Stop C3800
Austin, TX  78712

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

It is interesting to see all these numbers. I've gone back to previous semesters and calculated our growth and we have seen an average of 15% growth from semester to semester. This semester we are also having to deal with DHCP pools (we use /22s) that are nearly exhausted.  Cacti does a great job for us to monitor lease consumption as well as alerting when they reach a critical level. Below are our numbers, and some previous numbers for comparison:

 

Date

802.11a

802.11b/g

n5gz

n2.4ghz

Clients total

Spring 2011

1510

8144

434

373

10000

Summer 2011

522

2733

93

63

4300

Fall 2011

1631

10296

670

796

12400

Spring 2012

2121

11208

1047

1828

15140

 

 

Thanks,

 

Hector Rios

Louisiana State University

 

 

Hector, How are you doing alerting with Cacti? I use it, but don't think I've ever explored alerting before. On another note, I think we saw some growth over black friday, but not really over Christmas. We used to average 1650 simultaneous wireless devices during peak times, now it's more like 1750. Thanks, Nathan Nathan P. Hay Network Engineer | Information Technology Cedarville University | www.cedarville.edu 937-766-7905 twitter: @nathanphay >>> Hector J Rios 1/27/2012 9:41 AM >>> It is interesting to see all these numbers. I've gone back to previous semesters and calculated our growth and we have seen an average of 15% growth from semester to semester. This semester we are also having to deal with DHCP pools (we use /22s) that are nearly exhausted. Cacti does a great job for us to monitor lease consumption as well as alerting when they reach a critical level. Below are our numbers, and some previous numbers for comparison: Date 802.11a 802.11b/g n5gz n2.4ghz Clients total Spring 2011 1510 8144 434 373 10000 Summer 2011 522 2733 93 63 4300 Fall 2011 1631 10296 670 796 12400 Spring 2012 2121 11208 1047 1828 15140 Thanks, Hector Rios Louisiana State University
Look under Management-->Thresholds and there you can set your parameters as well as the email addresses that you want to send emails to. -H
Message from nfoggi@depaul.edu

The thold (Threshold) is a plugin for cacti: http://docs.cacti.net/plugin:thold it's not in the default install or wasn't last i looked... Nicola ________________________________________ From: The EDUCAUSE Wireless Issues Constituent Group Listserv [WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] on behalf of Hector J Rios [hrios@LSU.EDU] Sent: Friday, January 27, 2012 9:12 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Very high number of wireless devices returning from break Look under Management-->Thresholds and there you can set your parameters as well as the email addresses that you want to send emails to. -H
At Westmont we've seen a significant increase, but not as large as reported by others on this list.  I'm eyeballing this off a rough graph, but the median number of devices on a given week per month is as follows.
Oct 2011: 2000
Nov 2011: 2000
Dec 2011: 2200
Jan 2012: 2500
Looks like a 10% Black Friday increase and about 15% Christmas increase.

Most of the devices that are connecting are Mac laptops, iPhones and iPads.
1 Mac OS X960 34.2%2.03 TB 61.0%
2 Apple iPhone784 27.9%142.92 GB 4.2%
3 Windows 7312 11.1%807.57 GB 23.7%
4 Apple iPod149 5.3%14.09 GB 0.4%
5 Apple iPad122 4.3%54.52 GB 1.6%
6 Android116 4.1%10.36 GB 0.3%
7 Windows Vista114 4.1%192.66 GB 5.6%
8 Other66 2.4%467.9 MB <0.1%
9Windows XP 572.0% 16.85 GB0.5%
10Mac OS X 10.6 371.3% 47.07 GB1.4%

Here is a graph of our daily associations.
The Green is Open WiFi and the Blue is Dot1X/WPA.


Kenneth V. Mattson III
Director - Network and Data
DoIT
Creighton University
402-280-2743
402-981-1140
 
A password is like a toothbrush: 
Choose a good one, change it regularly and don't share it.

 






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