RE: [WIRELESS-LAN] Lead time for Wi-Fi gear?

[Voelker, Andy]

We ordered a few hundred Aruba 505/515's about a month ago. We're being told 
September, maybe earlier.  We did get the mounts, a few outdoor AP's, and a 
pair of switches within a month.


Andy Voelker
Network Administrator
Davidson College

From: The EDUCAUSE Wireless Issues Community Group Listserv 
 On Behalf Of Mike Atkins
Sent: Thursday, May 20, 2021 10:24 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Lead time for Wi-Fi gear?

What's the word on lead time for your Wi-Fi gear?  We are primarily Cisco but 
have some Aruba and see ship times six months out.  Is that what everyone else 
is seeing?  I know some Meraki gear can be shipped within a week or so.  I just 
wanted to get a feel from the group as to what they hear on the street.








--




Mike Atkins
Infrastructure Architect
Office of Information Technology
University of Notre Dame
Phone: 574-631-7210



**
Replies to EDUCAUSE Community Group emails are sent to the entire community 
list. If you want to reply only to the person who sent the message, copy and 
paste their email address and forward the email reply. Additional participation 
and subscription information can be found at 
https://www.educause.edu/community

**
Replies to EDUCAUSE Community Group emails are sent to the entire community 
list. If you want to reply only to the person who sent the message, copy and 
paste their email address and forward the email reply. Additional participation 
and subscription information can be found at https://www.educause.edu/community

RE: [WIRELESS-LAN] Android Rogue Hunting App

[Voelker, Andy]

This application is the best application I’ve ever gotten for free on android.  
Ever.  Newer versions of android limit how often it can scan, so we have to 
worry about that a bit, but still… great app.


Andy Voelker
Network Administrator
Davidson College

From: The EDUCAUSE Wireless Issues Community Group Listserv 
 On Behalf Of Hall, Rand
Sent: Thursday, January 9, 2020 7:59 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Android Rogue Hunting App

We've had great success with Wifi 
Analyzer.
 It has a great beeping "geiger counter" feature that scares kids as you're 
roaming the hallways :-)

Rand

Rand P. Hall
Director, Network Services askIT!
Merrimack College
978-837-3532
rand.h...@merrimack.edu

If I had an hour to save the world, I would spend 55 minutes defining the 
problem and five minutes finding solutions. – Einstein


On Wed, Jan 8, 2020 at 1:43 PM Gray, Sean 
mailto:sean.gr...@uleth.ca>> wrote:
Happy New Year to all you happy wi-fi people!

Does anyone have any Android software products they recommend for Rogue 
hunting? Unfortunately Ekahau Mobile Survey (EMS) has been canned, so we are 
looking for alternatives to put to use on an Android tablet. Ideally it should 
be something simple to use, that allows non-technical users to quickly narrow 
down the location of rogues.

Thanks

Sean

Sean Gray | B.Sc (Hons)
Voice, Collaboration & Wireless Network Analyst
ITS, University of Lethbridge


**
Replies to EDUCAUSE Community Group emails are sent to the entire community 
list. If you want to reply only to the person who sent the message, copy and 
paste their email address and forward the email reply. Additional participation 
and subscription information can be found at 
https://www.educause.edu/community

**
Replies to EDUCAUSE Community Group emails are sent to the entire community 
list. If you want to reply only to the person who sent the message, copy and 
paste their email address and forward the email reply. Additional participation 
and subscription information can be found at 
https://www.educause.edu/community

**
Replies to EDUCAUSE Community Group emails are sent to the entire community 
list. If you want to reply only to the person who sent the message, copy and 
paste their email address and forward the email reply. Additional participation 
and subscription information can be found at https://www.educause.edu/community

RE: [WIRELESS-LAN] Performance improvements from hallway to in-room

[Voelker, Andy]

Yeah, last time this came up I referenced the WHO's statement.  However, 
there's a guy with a blog about the evils of wifi radiation... so..


Andy Voelker
Network Administrator
Davidson College

-Original Message-
From: The EDUCAUSE Wireless Issues Community Group Listserv 
 On Behalf Of Curtis K. Larsen
Sent: Friday, September 6, 2019 1:49 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Performance improvements from hallway to in-room

Here are some interesting links on this topic:

World Health Organization:  
https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.who.int%2Fpeh-emf%2Fpublications%2Ffacts%2Ffs304%2Fen%2Fdata=02%7C01%7Canvoelker%40DAVIDSON.EDU%7Ceb35b0706e474787698108d732f27b04%7C35d8763cd2b14213b629f5df0af9e3c3%7C1%7C0%7C637033889348587780sdata=3zg4dqKFz82lhrM44bAwkNzb9hBcbH%2FHhzjT71gqHQw%3Dreserved=0

Wi-Fi Alliance:  
https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.wi-fi.org%2Fwi-fi-and-healthdata=02%7C01%7Canvoelker%40DAVIDSON.EDU%7Ceb35b0706e474787698108d732f27b04%7C35d8763cd2b14213b629f5df0af9e3c3%7C1%7C0%7C637033889348597775sdata=NSFOzKodnzvzsYFbvbOhqJBUHZ%2FVoK5mIzZA0Ltgj7s%3Dreserved=0

Cisco 1815W Install Guide:   "7.87 inches of separation"   
https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.cisco.com%2Fc%2Fen%2Fus%2Ftd%2Fdocs%2Fwireless%2Faccess_point%2F1815%2Fquick%2Fguide%2Fap1815wgetstart.htmldata=02%7C01%7Canvoelker%40DAVIDSON.EDU%7Ceb35b0706e474787698108d732f27b04%7C35d8763cd2b14213b629f5df0af9e3c3%7C1%7C0%7C637033889348597775sdata=R%2F2ADP6lTQU8PUqrvKEaiJDJrrRxOG4dnzBpreefGoQ%3Dreserved=0

https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.forbes.com%2Fsites%2Fquora%2F2016%2F05%2F19%2Fa-radiation-oncologist-says-everything-you-need-to-hear-about-wifi-and-cancer-risk%2F%2353d25dde7267data=02%7C01%7Canvoelker%40DAVIDSON.EDU%7Ceb35b0706e474787698108d732f27b04%7C35d8763cd2b14213b629f5df0af9e3c3%7C1%7C0%7C637033889348597775sdata=4qS%2Fa2Qf8OinZDjPqqhC0U85h6ndCqxXOMmmdwI7RYY%3Dreserved=0

https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.cdc.gov%2Fnceh%2Fradiation%2Fnonionizing_radiation.htmldata=02%7C01%7Canvoelker%40DAVIDSON.EDU%7Ceb35b0706e474787698108d732f27b04%7C35d8763cd2b14213b629f5df0af9e3c3%7C1%7C0%7C637033889348597775sdata=jBPTcxPDufsfi73hfDjg0D54UrScvV1SzUEukSsKviQ%3Dreserved=0


...On the other side of the argument ...you can find stuff like this:


https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.theepochtimes.com%2Ftuning-in-to-microwave-sickness_2925499.htmldata=02%7C01%7Canvoelker%40DAVIDSON.EDU%7Ceb35b0706e474787698108d732f27b04%7C35d8763cd2b14213b629f5df0af9e3c3%7C1%7C0%7C637033889348597775sdata=61AVmgrpmN5M1a4rGzj%2FBt5QY7xCked85xmJOiikbOo%3Dreserved=0


Thanks,

Curtis


From: The EDUCAUSE Wireless Issues Community Group Listserv 
 on behalf of Turner, Ryan H 

Sent: Friday, September 6, 2019 11:39 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Performance improvements from hallway to in-room

Maybe this is the reason he is a 'former' colleague :)

It reality I'm not a doctor or RF researcher.  There have been plenty of 
instances in history where we thought something was safe to be proven wrong 
later.  I try to take a softer approach.

Ryan Turner
Head of Networking, ITS
The University of North Carolina at Chapel Hill
+1 919 274 7926 Mobile
+1 919 445 0113 Office

On Sep 6, 2019, at 1:32 PM, Jonathan Miller 
mailto:jmill...@fandm.edu>> wrote:

One of my former colleagues told a story that he referred a scared/angry parent 
to one of these:



It was enough to make them happy :)

Jonathan Miller
Network Analyst
Franklin and Marshall College


On Fri, Sep 6, 2019 at 12:26 PM Hall, Rand 
mailto:ha...@merrimack.edu>> wrote:
Random data point: we replaced 375 dorm APs this summer and 3 had tape over the 
LED

Rand

Rand P. Hall
Director, Network Services askIT!
Merrimack College
978-837-3532
rand.h...@merrimack.edu

If I had an hour to save the world, I would spend 55 minutes defining the 
problem and five minutes finding solutions. - Einstein


On Thu, Sep 5, 2019 at 5:53 PM Hunter Fuller 
mailto:hf0...@uah.edu>> wrote:
Sometimes I wonder if we're the only campus that doesn't get that type of 
thing. We used to have a few "can you turn off this LED" before we just turned 
all of them off by default.

--
Hunter Fuller
Router Jockey
VBH Annex B-5
+1 256 824 5331

Office of Information Technology
The University of Alabama in Huntsville
Network Engineering

On Thu, Sep 5, 2019 at 3:26 PM Christopher Brizzell 
<0113a07d9d59-dmarc-requ...@listserv.educause.edu>
 wrote:
>
> Just be ready for some amount of backlash from an angry/ignorant parent. 
> Every year (including yesterday) we have parents contact us saying 

Sudden driver problems with Intel cards and 802.11k

[Voelker, Andy]

Two weeks ago we inexplicably had several models of laptop completely cut off 
from our wireless network.  On many when they went to look for available SSID's 
the driver would either crash or all networks would disappear.  On others they 
just wouldn't connect to any of our networks, even the open guest network.  All 
work ok off campus.  We finally tracked it down to two intel chips:

Intel AC 7260
Intel Centrino R Ultimate-N 6300

I discovered that the problem disappeared when I disabled 802.11k.  We're an 
Aruba shop.  We haven't done any updates or major changes to our network since 
October.  Those models couldn't have all received a bad driver at the same 
time.  I think we were able to find a driver that fixed the Intel AC 7260, but 
they stopped making updates to the Centrino.

Has anyone else seen this suddenly?  Next I'm going to try to tweak some 
settings in 802.11k to see if I can re-enable it without the offending setting.

-Andy Voelker
Network Administrator
Davidson College


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

RE: [WIRELESS-LAN] EDUROAM Service Fees Thoughts

[Voelker, Andy]

Since Kevin echoed his previous institutions more than his current  I’ll 
talk about Davidson’s implementation.  I implemented eduroam a little over a 
year ago at Davidson College.  I must say that I hate guest networks.  Ours has 
a captive portal that some devices randomly hate, some users find ways to mess 
up, and no one gets any semblance of security or privacy.  One could design and 
upkeep a system of acquiring an account or password for a secured network, but 
none of these are terribly pretty, users are always frustrated by them, and 
they take some upkeep.  We’re a small shop.   Eduroam provides people with a 
secure connection, zero configuration, and, largely, zero frustration.  
Wireless this day and age is expected to be ubiquitous, and it provides just 
that.  We have eduroam users thrown on to the guest VRF, the same as the guest 
captive portal network, and we have the ability to traffic shape them 
separately.  The total cost for us is peanuts.  Of course, I still have to 
upkeep the guest network for clients that don’t have eduroam at their home 
campus and other visitors, but eduroam skims off a significant portion of those 
visitors and keeps those visitors happy and blissfully away from the helpdesk.  
Likewise, our community gets the same experience wherever they go.  When we 
joined, we anticipated the cost and built that in to our budget.  We’ll have to 
swing a little to cover the last year, this year, and other fees, but I think 
it is well worth it.  The more campuses that get on board, the greater the 
value each campus gets out of it.

​Someone can correct me if I’m wrong, but I do believe you can allow 
eduroam guests to your campus for free.  This is the service provider tier 
(SP).  If you want your community to be able to use it abroad, that’s where the 
fees come in.  That structure is designed to grow the  network.  Maybe you can 
start with that and see how many of your community members beg for IDP access?  
That pricing structure could have changed, along with the other things recently.

Andy Voelker
Network Administrator and IT Infrastructure Team Lead
Davidson College

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Davis, Kevin
Sent: Wednesday, April 5, 2017 5:36 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] EDUROAM Service Fees Thoughts


This sender failed our fraud detection checks and may not be who they appear to 
be. Learn about spoofing

Feedback

T.J.,

I am a tremendous advocate and proponent for Eduroam as a common good service 
that our campuses should adopt wherever possible.

At the most tactical/self-interested side, in most of our cases, we have 
significant numbers of study abroad students as well as faculty who are doing 
sabbaticals, research, conferences, meetings and other activities around the 
world.  One of my previous universities counted the number of international 
travelers annually and it approached being a five digit number!  Many of those 
trips are to universities; and, the vast majority of those schools — 
particularly in Europe but also in Canada, Asia, Latin America and other places 
— are using Eduroam.

The seamlessness of the experience it provides is terrific.  Your users 
immediate get an authenticated, secure connection at thousands of institutions 
in exchange for allowing within-higher ed roaming on your network.  And it can 
simplify your own support/help requests for your own network.  (I once heard a 
horror story of an international education program at an Asian university where 
the 60 students/multiple faculty were getting new weekly guest credentials for 
a two month program — when if they had known about Eduroam, which was in use on 
the campus, all that hassle on both sides would have been avoided.)

I know of a significant number of schools that are deprecating their own named 
wireless networks and using Eduroam for both their own users and their EDU 
visitors.  This has the advantage of making sure that your own users are 
(properly) onboarded to Eduroam while at home, so they can roam without 
difficulty.  Make sure to require the realm for your local users.  Davidson 
expects to migrate to Eduroam as our sole campus 802.1x/secure network this 
year.  To your question: yes, it is pretty straightforward and common to 
segment your campus users from visitors and to give different experiences; 
iirc, the Eduroam expectation is for only a limited number of ports/services at 
minimum.

At a broader level — to me Eduroam is an example of the benefits that happen 
when higher ed collaborates.  I have been in this industry to remember, 
vaguely, the bad-old-days when NSFNet was going away in the mid-1990s and all 
of our institutions were about to get the bandwidth and cost screws put to us 
by private sector telcos.  The birth of Internet2 (and state 

Student Gaming behind NAT

[Voelker, Andy]

We’re having increasing problems with newer games operating on a 1:1 NAT in our 
residence halls.  Some of these games have a dozen port entries per platform 
(Xbox, PS4, PC) and after all that the games still aren’t acting reliably.  
We’re using a Palo Alto firewall, which carries application signatures for SOME 
games, but not that many.  I’m finding myself spending too much time on this, 
yet not able to dedicate enough to get to a good solution.  I’m interested to 
hear how others are handling this (since I’m new to operating this type of 
service).

Little background info:  We have a device SSID with a WPA2-PSK that dumps onto 
the student network, which carries some network permissions but relatively few. 
 A potential solution would be to stop NATing addresses, provide a public IPs 
to the device network, and segment them into an off-campus-only VRF.  However, 
students are starting to interact with their consoles using their PC’s and 
mobile devices, which would not work in this model.  By this I mean 
screen-casting, live streaming, etc.  I suspect that need will grow.  Also 
other “things” that use the device network like Chromecast, Sonos, Google Home, 
WiFi lights, etc would be useless unless we wrote firewall rules that allowed 
each and every one of these protocols.  Many of these rely on mDNS, DIAL, etc 
though.  Not easy.


I covet your thoughts.  Thanks in advance.

​
Andy Voelker
Network Administrator and IT Infrastructure Team Lead
Davidson College


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

RE: [WIRELESS-LAN] Playstation 4 (PS4) Not Connecting to Wireless

[Voelker, Andy]

Hi Mike.  We do Aruba wireless, so I can’t speak to the Cisco end.  I ended up 
putting the radios in the building into a high density profile that I created 
that lowers the 2.4 output to 9db.  That got more radios off air monitor mode 
and spread the 2.4 signal out more evenly, but the AP’s (for now) are still in 
the hallway, so the signal he reaches the student isn’t fantastic.  I made some 
exceptions here and there, but the Aruba algorithm doesn’t make it easy.  It 
just assumes it is way smarter than you. ☺

At Davidson, we have a DavidsonDevice network that is a WPA2-PSK.  Our 
community has to request the password from us and we collect MAC addresses 
(though we don’t do anything with them other than record since we got rid of 
Bradford).  Most PS4’s are running well, though I have activated some ports for 
the ones that weren’t.

​
Andy Voelker
Network Technician/Wireless LAN Manager
Davidson College

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Mike Atkins
Sent: Friday, September 2, 2016 7:08 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Playstation 4 (PS4) Not Connecting to Wireless

Interesting observation Andy.  This closely fits a similar situation where we 
have a new building with Cisco 2802’s running and the XOR radio is 
automatically disabling 2.4Ghz on several APs in a graduate student space.  
While the APs see neighbor APs at ~50db the clients see the ssid @ ~60db in the 
2.4Ghz, but are not able to connect.  Manually turning on a 2.4Ghz radio from 
monitor to client service enables the clients to connect.  One specific device 
was 2.4Ghz only which pushed to manual adjustments.  If anyone knows the 
formula for XOR radio decision it would be very helpful for our understanding 
of the process.

We have PS4’s on campus but they typically connect to our guest network with no 
auth. (rate limit 8M/2M)  Our help desk encourages students to use a wired 
connection for game consoles, especially Xbox if they need public IP address.  
Students can self-register devices for the wired network (Cisco Clean Access.)  
We often joke about it being cheaper to have a box of USB-Ethernet adapters to 
hand out instead of spending hours of troubleshooting one wifi device…… but 
seriously.






Mike Atkins
Network Engineer
Office of Information Technology
University of Notre Dame

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>]
 On Behalf Of Voelker, Andy
Sent: Thursday, September 01, 2016 10:34 PM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
Subject: Re: [WIRELESS-LAN] Playstation 4 (PS4) Not Connecting to Wireless


We have had a few reports of PS4 problems, but as far as I can tell they are 
mostly because PS4's only have a 2.4GHz radio.  Often the AP near them has gone 
into air monitor mode from too much 2.4 in the air, and the antenna on the PS4 
isn't that fantastic.  Plus, many students shove it in a cabinet under a TV, 
and that blocks even more signal.  Lately I've been just activating a port for 
them, but I'll look into it further when I have time.



Andy Voelker

Davidson College


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> 
on behalf of Brandon Dixon 
<bdix...@murraystate.edu<mailto:bdix...@murraystate.edu>>
Sent: Thursday, September 1, 2016 2:18:41 PM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
Subject: Re: [WIRELESS-LAN] Playstation 4 (PS4) Not Connecting to Wireless

Tim and Danny, thanks for the responses:

The SSID's for these are on an Open SSID that has a NAC backend, so
802.1x isn't actually involved in the connection process.  The NAC
watches for the MAC address and puts them in the appropriate VLAN.
We've verified the NAC is working properly, as it's working for all
other devices.

We do encourage them to plug in their gaming devices, for the sake of
latency and experience for the end user, but there's still some who
prefer wireless.

On 9/1/2016 9:46 AM, Danny Eaton wrote:
> This leads me to ask - doesn't the Xbox and PS4 have wired ports?  Why put 
> all that refresh rate traffic on wireless?  Why not "strongly suggest" they 
> connect it to a wired port, leaving wireless for truly mobile devices 
> (laptops, Macbook Air, phones, pads, etc.)?  If it has a permanent power 
> brick, plug it in.
>
> -Original Message-
> From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
> [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Tim Tyler
> Sent: Thursday, September 01, 2016 9:24 AM
> To: 
> WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV

Internal bandwidth testing applications

[Voelker, Andy]

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


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

802.11k and 802.11r in BYOD

[Voelker, Andy]

I’m sure this question gets recycled occasionally, but I wanted to check in on 
everyone’s experience with these two protocols in a very BYOD environment.  I 
just became a WLAN admin in August and I’m finally to the point where I can 
tweak some finer details of the network.  We have 1600 residential students 
that bring all kinds of devices.  I’m particularly interested in 802.11k since 
it has been out for a while and I think device compatibility or at least 
tolerance is pretty good.  What about 802.11r?

I appreciate your thoughts.

​
Andy Voelker
Network Technician/Wireless LAN Manager
Davidson College


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

RE: [WIRELESS-LAN] 5 GHz 20 vs 40 MHz; and, have you tried DFS channels? (annual update)

[Voelker, Andy]

This doc is certainly not comprehensive, but is extremely useful.  We rolled 
out some new AP's and discovered problems on channel 144.  This sheet helped us 
figure out why.

https://docs.google.com/spreadsheets/d/1qwsQgTKH1lSD3AVRVpifWDKLmWvVsCDo1F-VmINX9f8/pubhtml


Andy Voelker
Network Technician/Wireless LAN Manager
Davidson College

-Original Message-
From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Steve Bohrer
Sent: Tuesday, March 15, 2016 10:56 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] 5 GHz 20 vs 40 MHz; and, have you tried DFS channels? 
(annual update)

Last April in 
http://listserv.educause.edu/scripts/wa.exe?A2=WIRELESS-LAN;57305dd0.1504  
"802.11ac AP Deployment," several respondents say they use 40 MHz channel width 
campus wide. Some noted that the ac standard provides for dynamic switching 
back and forth to 20 MHz, so interference is less of an issue. 

But, those respondents didn't mention if they were using only the U-NII-1 and 
U-NII-3 bands, or if they are also using the bands that require DFS, U-NII-2 
and/or -2e .

Is there any consensus or best practice on this? Is anyone using -2 and -2e, or 
just staying with four non-overlapping 40 MHz 5 GHz channels? Are most current 
clients able to connect to the DFS channels?

Aruba's "RF and Roaming Optimization for Aruba 802.11ac Networks" doc ( 
http://community.arubanetworks.com/t5/Validated-Reference-Design/RF-and-Roaming-Optimization-for-Aruba-802-11ac-Networks/ta-p/227716
 ) says that:

"Majority of voice specific devices do not scan many channels before roaming as 
they have active voice calls. For such devices, do not use U-NII-2 and U-NII-2e 
channels."

and

"Roaming test should be performed using different types of clients expected on 
the WLAN, to see their behavior on DFS channels."

So, that sounds like a "no" vote on DFS, though we don't have wifi VoIP phones. 
Does any one have field experience and recommendations? Any guesses if DFS 
channels will ever be useable with a student BYO client base?

Thanks,
Steve Bohrer
Network & Security Admin
IT Infrastructure, Emerson College
617-824-8523
**
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: Naming conventions for WLAN devices

[Voelker, Andy]

Does anyone else have a convention that produces some humorous results?  We 
have a Sloan building, first floor which is called "SLO1-switch".  Fortunately, 
it is a gigabit, so the name doesn't hold up.  There is also a BAKE-switch, 
CHIN-switch, and a USB switch.

Our convention is as follows:

Switches:
[3 to 4 letter building code][N,S,E,W cardinal direction of closet if ther are 
multiple closets on the same level]-SWITCH-[A,B,C for the rack it is on in the 
closet]

We share the building codes with facilities management.  Well, most of them... 
some got off somehow.

AP's
[3 to 4 letter building code]-[room # on map from facilities mngt]-[AP for 
normal AP, APO for outdoor, APB for wireless bridge]-[A,B,C,D denoting multiple 
AP's in one room/hall, we go clockwise from the main entrance... which doesn't 
work very well]

We only have three controllers, one a master, the other a controller, the last 
a test.

Andy Voelker
Network Technician/Wireless LAN Manager
Davidson College

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Norman Chu
Sent: Tuesday, February 2, 2016 12:38 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Naming conventions for WLAN devices

We're looking for ideas to improve our current naming convention for network 
devices.

For an access point, it currently consists of:
--ap
e.g. burnside-1-ap24

For controllers, we use:
wireless--wmc
e.g. wireless-local1-wmc
(wmc = wireless mobility controller)

For access points, we're thinking of adding location info instead of the 
arbitrary number, so something like: burnside-1-ap101a where 101a is the first 
AP in room 101 (101b would be the second AP, etc.)

Switches: burnside-sw1, burnside-sw2
UPS's: burnside-ups-1, burnside-ups2-1
PoE midspans: burnside-poe-1, burnside-poe2-1

What do other organizations use for naming conventions for their network 
devices?

Thanks.

Norman Chu
Network Analyst - Network Infrastructure group
Systems Engineering - McGill NCS
(514) 398-7299

** 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/.