RE: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing any issues in the fall with large classrooms and delayed connection times (Aruba 8.5.0.13)

[Barrantes, Rita]

We are on 8.7.1.4 with 6,300 WAPs and 6 controllers. We had to upgrade to 8.7 
because of the newer model of WAPs


___
Rita Barrantes, PhD, PMP
Director, Technology Services and Support
Networks and Telecomm | IT Assessments
832-842-4702 | rbarran...@uh.edu
[cid:image001.png@01D79FE7.35A3D4B0]

From: The EDUCAUSE Wireless Issues Community Group Listserv 
 On Behalf Of Joe Walker
Sent: Thursday, September 2, 2021 10:16 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing 
any issues in the fall with large classrooms and delayed connection times 
(Aruba 8.5.0.13)

We currently aren't experiencing this issue but these symptoms (stm crashes, 
controller crashes) were identical to the issues we saw in early 2019 (8.5.0.1) 
An aggressive rebalance of users/ap's (and eventually an upgrade to 8.5.0.3) 
fixed this for us.  I mention this because we are currently sitting on 8.5.0.13 
and don't seem to be having the issues reported by others in the same code so I 
wonder if there is credence to the load balance thresholds playing a part.

Campus cluster 2x7240's 1X7240XM
22K connected devices

Thanks,
Joe

Joe Walker
Network and Telecommunication Services
Kansas State University
(785)532-4997
f...@ksu.edu

From: The EDUCAUSE Wireless Issues Community Group Listserv 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> 
on behalf of Smith, Nayef 
mailto:nayef.z.sm...@emory.edu>>
Sent: Thursday, September 2, 2021 9:19 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing 
any issues in the fall with large classrooms and delayed connection times 
(Aruba 8.5.0.13)


This email originated from outside of K-State.

"I’m also noticing that there are much fewer clients on this controller, and 
that ratio doesn’t seem to be improving."


To this point, the action we took that seemed to help the most was adjusting 
our active client load balancing threshold.  We dropped it significantly to 
force clients to balance across controllers.  Once we got below ~5000 active 
clients per controller, we stopped seeing the mass client connection issues.


We still have a controller that hasn't taken significant load, but now that 
we've been running without major issues for the past few days, we're reluctant 
to touch the setting again.


Nayef Z. Smith | Network Services | Voice: 404-727-6019


[cid:image002.png@01D79FE7.35A3D4B0]


From: The EDUCAUSE Wireless Issues Community Group Listserv 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> 
on behalf of Davis, Jonathan Alan mailto:jonath...@unc.edu>>
Sent: Thursday, September 2, 2021 9:27 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing 
any issues in the fall with large classrooms and delayed connection times 
(Aruba 8.5.0.13)

Lee, don’t you bring your bad Cisco-juju to this conversation! :-)

Now that Lee has been properly handled, this is probably a great opportunity to 
say ‘hello’ to the greater list.


Hello!

Last night, we (UNC) restarted the controller used to test the firewall policy. 
Despite Aruba’s advisory, we’ve been led to believe that restarting STM may not 
be enough, and restarting the whole controller may be required to resolve high 
STM CPU utilization.

This morning we are keeping a close eye on that controller. While STM is 
surging well past 100%, it seems to be averaging much closer to 95%.

However…
We also only have about 7,000 users connected across the cluster. It will be 
interesting to see what happens as the day progresses and students wake up and 
migrate from the ResNET cluster to the Campus cluster.
I’m also noticing that there are much fewer clients on this controller, and 
that ratio doesn’t seem to be improving.

I’ll update as we progress through this.


JD

--

Jonathan Davis

Wireless Architect

The University of North Carolina at Chapel Hill

jonath...@unc.edu

+1 336 279 3355 (Mobile)


From: The EDUCAUSE Wireless Issues Community Group Listserv 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> 
on behalf of Lee H Badman mailto:lhbad...@syr.edu>>
Sent: Thursday, September 2, 2021 9:06:33 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing 
any issues in the fall with large classrooms and delayed connection times 
(Aruba 8.5.0.13)

But you tested in your lab, right? I love that one… put new code on a couple of 
APs, or even a few dozen. 

RE: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing any issues in the fall with large classrooms and delayed connection times (Aruba 8.5.0.13)

[Barrantes, Rita]

Nayef – that’s what we did. Down to 15%


___
Rita Barrantes, PhD, PMP
Director, Technology Services and Support
Networks and Telecomm | IT Assessments
832-842-4702 | rbarran...@uh.edu
[cid:image002.png@01D79FE6.EC8BFA50]

From: The EDUCAUSE Wireless Issues Community Group Listserv 
 On Behalf Of Smith, Nayef
Sent: Thursday, September 2, 2021 10:13 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing 
any issues in the fall with large classrooms and delayed connection times 
(Aruba 8.5.0.13)

We were seeing one of our cluster members taking on ~7000+ active clients while 
two others were in the low double digits.  Our previous threshold was at 50%, 
which seems to have previously been the default.  Once we adjusted our 
thresholds down to 20%, we saw improvements.  We then went down to 15%.




Nayef Z. Smith | Network Services | Voice: 404-727-6019


[cid:image003.png@01D79FE6.EC8BFA50]


From: The EDUCAUSE Wireless Issues Community Group Listserv 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> 
on behalf of Rob Harris 
mailto:robert.har...@culinary.edu>>
Sent: Thursday, September 2, 2021 10:59 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing 
any issues in the fall with large classrooms and delayed connection times 
(Aruba 8.5.0.13)


For those of you who have experienced this, what was your user load and how 
were your clusters operating (balancing, active/standby) ?



I wonder if there’s a threshold..



Thx!



From: The EDUCAUSE Wireless Issues Community Group Listserv 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> 
On Behalf Of Smith, Nayef
Sent: Thursday, September 2, 2021 10:20 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing 
any issues in the fall with large classrooms and delayed connection times 
(Aruba 8.5.0.13)







"I’m also noticing that there are much fewer clients on this controller, and 
that ratio doesn’t seem to be improving."



To this point, the action we took that seemed to help the most was adjusting 
our active client load balancing threshold.  We dropped it significantly to 
force clients to balance across controllers.  Once we got below ~5000 active 
clients per controller, we stopped seeing the mass client connection issues.



We still have a controller that hasn't taken significant load, but now that 
we've been running without major issues for the past few days, we're reluctant 
to touch the setting again.





Nayef Z. Smith | Network Services | Voice: 404-727-6019



[cid:image003.png@01D79FE6.EC8BFA50]



From: The EDUCAUSE Wireless Issues Community Group Listserv 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> 
on behalf of Davis, Jonathan Alan mailto:jonath...@unc.edu>>
Sent: Thursday, September 2, 2021 9:27 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing 
any issues in the fall with large classrooms and delayed connection times 
(Aruba 8.5.0.13)



Lee, don’t you bring your bad Cisco-juju to this conversation! :-)



Now that Lee has been properly handled, this is probably a great opportunity to 
say ‘hello’ to the greater list.



Hello!



Last night, we (UNC) restarted the controller used to test the firewall policy. 
Despite Aruba’s advisory, we’ve been led to believe that restarting STM may not 
be enough, and restarting the whole controller may be required to resolve high 
STM CPU utilization.



This morning we are keeping a close eye on that controller. While STM is 
surging well past 100%, it seems to be averaging much closer to 95%.



However…

We also only have about 7,000 users connected across the cluster. It will be 
interesting to see what happens as the day progresses and students wake up and 
migrate from the ResNET cluster to the Campus cluster.

I’m also noticing that there are much fewer clients on this controller, and 
that ratio doesn’t seem to be improving.



I’ll update as we progress through this.



JD

--

Jonathan Davis

Wireless Architect

The University of North Carolina at Chapel Hill

jonath...@unc.edu

+1 336 279 3355 (Mobile)



From: The EDUCAUSE Wireless Issues Community Group Listserv 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> 
on behalf of Lee H Badman mailto:lhbad...@syr.edu>>
Sent: Thursday, September 2, 2021 9:06:33 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
Subject: Re: 

RE: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing any issues in the fall with large classrooms and delayed connection times (Aruba 8.5.0.13)

[Barrantes, Rita]

We are experiencing the same issues. We rebooted this morning.


___
Rita Barrantes, PhD, PMP
Director, Technology Services and Support
Networks and Telecomm | IT Assessments
832-842-4702 | rbarran...@uh.edu
[cid:image001.png@01D79FE2.62D01BB0]

From: The EDUCAUSE Wireless Issues Community Group Listserv 
 On Behalf Of Smith, Nayef
Sent: Thursday, September 2, 2021 9:20 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing 
any issues in the fall with large classrooms and delayed connection times 
(Aruba 8.5.0.13)

"I’m also noticing that there are much fewer clients on this controller, and 
that ratio doesn’t seem to be improving."

To this point, the action we took that seemed to help the most was adjusting 
our active client load balancing threshold.  We dropped it significantly to 
force clients to balance across controllers.  Once we got below ~5000 active 
clients per controller, we stopped seeing the mass client connection issues.

We still have a controller that hasn't taken significant load, but now that 
we've been running without major issues for the past few days, we're reluctant 
to touch the setting again.


Nayef Z. Smith | Network Services | Voice: 404-727-6019


[cid:image002.png@01D79FE2.62D01BB0]


From: The EDUCAUSE Wireless Issues Community Group Listserv 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> 
on behalf of Davis, Jonathan Alan mailto:jonath...@unc.edu>>
Sent: Thursday, September 2, 2021 9:27 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing 
any issues in the fall with large classrooms and delayed connection times 
(Aruba 8.5.0.13)

Lee, don’t you bring your bad Cisco-juju to this conversation! :-)

Now that Lee has been properly handled, this is probably a great opportunity to 
say ‘hello’ to the greater list.


Hello!

Last night, we (UNC) restarted the controller used to test the firewall policy. 
Despite Aruba’s advisory, we’ve been led to believe that restarting STM may not 
be enough, and restarting the whole controller may be required to resolve high 
STM CPU utilization.

This morning we are keeping a close eye on that controller. While STM is 
surging well past 100%, it seems to be averaging much closer to 95%.

However…
We also only have about 7,000 users connected across the cluster. It will be 
interesting to see what happens as the day progresses and students wake up and 
migrate from the ResNET cluster to the Campus cluster.
I’m also noticing that there are much fewer clients on this controller, and 
that ratio doesn’t seem to be improving.

I’ll update as we progress through this.


JD

--

Jonathan Davis

Wireless Architect

The University of North Carolina at Chapel Hill

jonath...@unc.edu

+1 336 279 3355 (Mobile)


From: The EDUCAUSE Wireless Issues Community Group Listserv 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> 
on behalf of Lee H Badman mailto:lhbad...@syr.edu>>
Sent: Thursday, September 2, 2021 9:06:33 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU 
mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing 
any issues in the fall with large classrooms and delayed connection times 
(Aruba 8.5.0.13)

But you tested in your lab, right? I love that one… put new code on a couple of 
APs, or even a few dozen. That’s supposed to somehow indicate what will happen 
at bigger load… and also maybe implies the vendor didn’t do their own “similar 
lab testing”…

“You should have tested before upgrading the whole environment…” how do you 
REALLY do that? And should you really have to? Just pondering the general state 
of things.

> On Sep 2, 2021, at 08:59, Enfield, Chuck 
> mailto:cae...@psu.edu>> wrote:
>
> That's been my experience for years.  The network works great when there are 
> no students around.  My working theory is that students emit RF interference, 
> but research ethics won’t let me run the tests, so we'll never know for sure.
>
> -Original Message-
> From: The EDUCAUSE Wireless Issues Community Group Listserv 
> mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
>  On Behalf Of Patrick McEvilly
> Sent: Thursday, September 2, 2021 8:56 AM
> To: 
> WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
> Subject: Re: [WIRELESS-LAN] [External] Re: [WIRELESS-LAN] Anyone else seeing 
> any issues in the fall with large classrooms and delayed connection times 
> (Aruba 8.5.0.13)
>
> Speaking from experience, I would be very concerned.  We had no issues until 
> students returned and we went downhill from there.
>
>
> On 9/2/21, 8:50 AM, "The EDUCAUSE Wireless Issues 

RE: [WIRELESS-LAN] Nyansa

[Barrantes, Rita]

We would like to join as well if possible.



Rita Barrantes, PhD, PMP
Director, IT Services | UIT
Faculty | College of Technology
University of Houston
rbarran...@uh.edu
832-842-4702



From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of McClintic, Thomas 
[thomas.mcclin...@uth.tmc.edu]
Sent: Friday, February 10, 2017 2:06 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Nyansa


I too am running a trial here. Would also like to hear the experience Lee is 
requesting if possible.

Thanks!

 Original Message 

Subject: Re: [WIRELESS-LAN] Nyansa

From: "Sullivan, Don" 

Date: Feb 10, 2017, 2:03 PM

To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Lee,

I would be happy to have a chat with you about it. Probably better off list for 
me.

Don Sullivan
Network Administrator
205-726-2111
dsulli...@samford.edu

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Lee H Badman
Sent: Friday, February 10, 2017 1:58 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Nyansa

Looking to talk with other schools that have objectively evaluated Nyansa with 
an installed appliance. Curious how what criteria you used to decide whether it 
was bringing you value, and if you bit on it, did it continue to bring value 
after the purchase.

I have it in test and am aware of the feature set and what it promises to do, 
but am looking for testimonials on what it has really exposed that you could 
take action on, how it fits with other tools that you have, and whether you 
have found it to be worth the cost.

On or off list is fine.

Thanks!

Lee Badman

Lee Badman | Network Architect

Adjunct Instructor | CWNE #200
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



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

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

UofH - Enterprise Network Admin 3 position (Wi-Fi Services)

[Barrantes, Rita]

Good afternoon Wireless-LAN CG members -

We are looking for a senior Wi-Fi analyst to join our team. The position is 
available at https://jobs.uh.edu/postings/30346 .
The University of Houston is a great place to work with excellent benefits and 
peer environment. Wi-Fi services is a top priority for our students and we are 
constantly looking for ways/ideas to improve our services. We provide network 
services to the UH main campus and several remote locations. We are in the 
middle of a very exciting campus-wide initiative evaluating the latest network 
Wi-Fi/Wired technologies for our campus, so this is indeed a great time to join 
the Wi-Fi team. To know more about us, you can visit http://www.uh.edu/infotech.

You are welcome to apply and/or forward the URL to anyone who may be 
interested. If you have any question about the position, feel free to reach out 
to James Schexneider (Wi-Fi manager) at 
jsche...@central.uh.edu or myself at 
rbarran...@uh.edu. Thanks in advance for your help.

Best,

Rita



___
Rita Barrantes, PhD, PMP
Director, Network Services | UIT TSS
Adjunct Faculty | College of Technology
832-842-4702 | rbarran...@uh.edu
[cid:image001.jpg@01D190F5.E6104BF0]


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

RE: MAcbooks dropping off wireless network

[Barrantes, Rita]

We had a similar issue yesterday. Only the PCs ones would connect. All MACs 
dropped.



From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Legge, Jeffry 
[jgle...@radford.edu]
Sent: Thursday, October 25, 2012 9:04 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] MAcbooks dropping off wireless network

I have seen some discussions about MACs dropping off wireless networks. I 
believe there may be some solutions.

Can someone direct me to articles that discuss possible fixes for this?

-Jeff Legge
Radford University
jgle...@radford.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/.

Wireless Services and Design Standards

[Barrantes, Rita]

Good evening -
 
I would like to know if any of your institutions is implementing a new strategy 
for deploying wireless services on campus. With the explosion of mobile 
devices, the demand for wireless services has skyrocketed.
At University of Houston we are using Meru as the provider for implementation 
of our wireless access network. Both Meru and Aruba are strong competitors in 
the high-density Wi-Fi network arena. 
Does any of your institutions use either Meru or Aruba technologies? Would you 
be willing to share your current Wi-Fi implementation strategies, experiences, 
and your network design standards? Have you used services from vendors to do 
site surveys in your institutions? 
 
Thanks in advance for any info you can provide.
 
Rita
 
___
Rita Barrantes, MBA, PMP
Assoc. to CIO and Mgr, IT Services
Office of the CIO
832-842-4702 | rbarran...@uh.edu
**
Participation and subscription information for this EDUCAUSE Constituent Group 
discussion list can be found at http://www.educause.edu/groups/.

Job posting - University of Houston

[Barrantes, Rita]

Good evening everyone -



At University of Houston, we have the following job position available: 
Enterprise System Network Administrator 2. https://jobs.uh.edu/postings/14779

Feel free to share it with colleagues interested in this job opportunity.



Thank you,



Rita B.

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