Re: [WIRELESS-LAN] Distributed WiFi model - Thin vs Thick debate revisited

2013-04-30 Thread James Andrewartha
On 29/04/13 22:51, Barros, Jacob wrote:
 It feels like I am coming full circle to where I was six years ago.
  Though I know its not exactly the same, I went back to the thin vs
 thick debates in the archives.  A few things stood out to me as
 considerations:  One concern was vendor longevity.  Another was whether
 or not the thick AP model would be able to keep up with the controller
 based architecture.  An advantage of the controller based architecture
 that stood out to me was central processing, specifically regarding key
 exchange.
 
 Are these points still valid concerns?  If your administration asked you
 to consider a distributed architecture, what other (vendor-neutral)
 concerns would you have?

There's a middle ground between thick and thin - relatively thick APs,
that are centrally managed but with enough smarts to process traffic
locally. 802.11ac will have an effect here, as each thin AP could
theoretically require 1Gb/s to the controller. This is why Cisco is
putting controllers in its switches, to distribute the traffic load.

Most controller-based vendors do support local bridging, but some will
not support all features or not maintain sessions if the controller fails.

I haven't really looked at the new range of thick APs like Meraki or
Aerohive, so can't comment on their architecture.

-- 
James Andrewartha
Network  Projects Engineer
Christ Church Grammar School
Claremont, Western Australia
Ph. (08) 9442 1757
Mob. 0424 160 877

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


RE: Distributed WiFi model - Thin vs Thick debate revisited

2013-04-30 Thread Osborne, Bruce W
Jacob,

You mention a sup card. That indicates that your Aruba hardware is EOL and 
cannot run the latest code. The EOL was announced in 2010.

Aruba's latest 7200 series controllers(the current successor to the Sup 
controllers)  have been designed with 802.11ac in mind,  If you upgrade now you 
would not need to upgrade the controller for 802.11ac Wi-Fi.

The controller provides central management  intelligence to the wireless 
system, If the controller load specs are exceeded, data path issues can 
result,. You would also have client issues if there are too many clients on an 
AP. That does not mean you move away from deploying APs though.

Somebody mentioned managing APs with Airwave, Remember, Airwave is owned by 
Aruba, so I would expect them to better support their own products and possible 
deprecate support for other vendors.

Bruce Osborne
Network Engineer
IT Network Services

(434) 592-4229

LIBERTY UNIVERSITY
Training Champions for Christ since 1971

From: Barros, Jacob [mailto:jkbar...@grace.edu]
Sent: Monday, April 29, 2013 4:02 PM
Subject: Re: Distributed WiFi model - Thin vs Thick debate revisited

Thanks to all so far.  To answer some questions:  We have 145 ap's deployed.  
However that is likely to go up as we address high density areas and re-deploy 
for 5GHz.  Some of that will happen as part of this summer's upgrades.  
Unfortunately, I cannot afford a complete overhaul so we would have to maintain 
both systems for at least one more academic year.  That does weigh heavily on 
our decision.

Regarding a/c, please correct me if I am mistaken, but I believe that the 
investment should wait until rev2 or whenever multi-user MIMO is mainstream.  I 
anticipate the distributed environment to be much more conducive to the newest 
ratification.  I will not have to upgrade a controller again, rather only 
replace the AP.

Our controller is dropping clients.  Aruba has confirmed that this is the case 
and only offered to sell me an updated sup card as a fix.  We do have had 
several cases open and still do now.  Effort is not in question here, just 
results.  Unfortunately having redundant controllers never fit into our budget 
model.  With a distributed model, no redundancy is needed.

We are considering Aerohive, using the HiveManager installed on a VM instead of 
the cloud-based version.  I have had four Aerohive AP's running in an 
off-campus dorm this academic year and am pleased so far.  It is a single point 
of management and metric gathering similarly to the Aruba web UI, but with all 
metrics included, not needing an additional server i.e. Airwave.  The greatest 
management disadvantage I have identified so far is that changes to any AP 
require a reboot.  With Aruba, I can make many changes in real time.

I am trying to build a long term cost analysis considering a five year life for 
each AP.  At first estimates, the costs appear to be similar and not a key 
decision point.  POE costs are a definite concern, but that exists with 
whatever architecture model we choose.

So far, I do not believe anyone has thrown a red flag.  Is that a fair 
assessment?



Jake Barros  |  Network Administrator  |  Office of Information Technology
Grace College and Seminary  |  Winona Lake, IN  |  574.372.5100 x6178

On Mon, Apr 29, 2013 at 11:59 AM, Bob Williamson 
bob_william...@aw.orgmailto:bob_william...@aw.org wrote:
While significantly smaller than most on this list, I would like to throw in my 
two cents:

We are using Meraki to manage our Ipads, ipods, etc.  It works great.  Having 
said that, if there is any interruption (internet, problems with firewall, 
their site, whatever) the only downside would be that we could not install 
apps, change settings, etc. until the issue was rectified.

I hesitate to put something that is more critical, like a wireless controller, 
offsite as it is a more time sensitive system.  Even without internet our users 
can logon and work locally.

We are using a Ruckus ZD3000 with 31 APs and have had zero downtime, coverage 
is excellent, and speeds are fast.  We feel strongly enough about it we 
purchased a second ZD3000 and have them synced at all times.  The failover is 
instant (almost) and the second unit was very inexpensive.  Best thing about 
the Ruckus is the interface is MUCH easier than the Aruba that we retired.  .  
The APs act independent from the controller (for the most part.

Maybe I am showing my age, but giving up all control to the cloud spooks me.

Hope that helps,
Bob Williamson
Network Administrator
Annie Wright Schools | 827 N Tacoma Ave, Tacoma, WA 98403 | 
www.aw.orghttp://www.aw.org/
D: 253.272.2216tel:253.272.2216 | F: 253.572.3616tel:253.572.3616 | 
bob_william...@aw.orgmailto:bob_william...@aw.org

Mission: Annie Wright's strong community cultivates individual learners to 
become well-educated, creative, and responsible citizens for a global society.

Find Annie Wright Schools on 
Facebookhttp://www.facebook.com/anniewrightschools

Re: [WIRELESS-LAN] Distributed WiFi model - Thin vs Thick debate revisited

2013-04-30 Thread Hall, Rand
Yes, I think there's a mistaken impression about the Aerohives and Merakis
out there. Some of it is FUD from the big iron vendors. Some of it is
old-timers like me questioning the over-hyped magic cloud.

The stuff works. Anyone looking to move off their current solution should
take a look. It's not perfect, but neither is the establishment.

Rand

P.S. A little de-FUD if you want it: http://www.meraki.com/trust/#oob




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 59 minutes defining the
problem and one minute finding solutions. – Einstein


On Mon, Apr 29, 2013 at 3:05 PM, Hurt,Trenton W.
trent.h...@louisville.eduwrote:

  With the aerohive solution this is done thru cooperative control amongst
 the aps that are RF neighbors with each other.  Here is article that
 discusses the protocols that aerohive uses to accomplish this.



 http://blogs.aerohive.com/blog/wi-fi-that-wont-die/cooperative-control-part-3
 

 ** **

 ** **

 *From:* The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:
 WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] *On Behalf Of *Watters, John
 *Sent:* Monday, April 29, 2013 11:55 AM

 *To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
 *Subject:* Re: [WIRELESS-LAN] Distributed WiFi model - Thin vs Thick
 debate revisited

  ** **

 ** **

 What happens to client roaming, RF balancing, and channel selection
 without a controller-based architecture?

 ** **

 If you use the Aruba Airwave AMP management platform, it should be able to
 keep your autonomous APs in sync.

 ** **

 ** **

 -jcw
 [image: cid:image001.jpg@01CE44EA.874CDAC0]

 ** **

 *
 *

 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.EDUWIRELESS-LAN@LISTSERV.EDUCAUSE.EDU]
 *On Behalf Of *Tim Cappalli
 *Sent:* Monday, April 29, 2013 10:50 AM
 *To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
 *Subject:* Re: [WIRELESS-LAN] Distributed WiFi model - Thin vs Thick
 debate revisited

 ** **

 What types of controller issues are you seeing that you hope to be fixed
 with a controller-less architecture?


 

  

 Tim Cappalli*, *Network Engineer
 LTS | Brandeis University
 x67149 | (617) 701-7149
 cappa...@brandeis.edu

 ** **

 On Mon, Apr 29, 2013 at 10:51 AM, Barros, Jacob jkbar...@grace.edu
 wrote:

 Hello all.  We are seriously considering replacing our Aruba
 infrastructure in favor of a distributed model.  We are having controller
 issues this academic year and the appeal of a controller-less model is
 strong. 

 ** **

 It feels like I am coming full circle to where I was six years ago.
  Though I know its not exactly the same, I went back to the thin vs thick
 debates in the archives.  A few things stood out to me as considerations:
  One concern was vendor longevity.  Another was whether or not the thick AP
 model would be able to keep up with the controller based architecture.  An
 advantage of the controller based architecture that stood out to me was
 central processing, specifically regarding key exchange.

 ** **

 Are these points still valid concerns?  If your administration asked you
 to consider a distributed architecture, what other (vendor-neutral)
 concerns would you have?

 ** **

 Thanks, in advance, for your opinions!

 ** **


 

 ** **

 Jake Barros  |  Network Administrator  |  Office of Information Technology
 

 Grace College and Seminary  |  Winona Lake, IN  |  574.372.5100 x6178

 ** 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/. ** **
  ** 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/.

image001.jpg

RE: [WIRELESS-LAN] Distributed WiFi model - Thin vs Thick debate revisited

2013-04-30 Thread Lee H Badman
I will second that emotion. Though we are a large Cisco controller-based 
environment, we run an extremely successful Meraki deployment in London: 
http://www.meraki.com/customers/higher-education/syracuse-university-london

and I also have a small Aerohive deployment in play.

I would recommend that anyone give either solution as much consideration as any 
of the controller-based solutions, to include a legitimate trial. I'd also not 
get so hung up on white papers that tout AP performance and seriously consider 
whether the system management and vendor support mechanisms is effective for 
your own particular needs.


-Lee


Lee H. Badman
Network Architect/Wireless TME
ITS, Syracuse University
315.443.3003

From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] on behalf of Hall, Rand 
[ha...@merrimack.edu]
Sent: Tuesday, April 30, 2013 9:10 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Distributed WiFi model - Thin vs Thick debate 
revisited

Yes, I think there's a mistaken impression about the Aerohives and Merakis out 
there. Some of it is FUD from the big iron vendors. Some of it is old-timers 
like me questioning the over-hyped magic cloud.

The stuff works. Anyone looking to move off their current solution should take 
a look. It's not perfect, but neither is the establishment.

Rand

P.S. A little de-FUD if you want it: http://www.meraki.com/trust/#oob




Rand

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

If I had an hour to save the world, I would spend 59 minutes defining the 
problem and one minute finding solutions. – Einstein


On Mon, Apr 29, 2013 at 3:05 PM, Hurt,Trenton W. 
trent.h...@louisville.edumailto:trent.h...@louisville.edu wrote:
With the aerohive solution this is done thru cooperative control amongst the 
aps that are RF neighbors with each other.  Here is article that discusses the 
protocols that aerohive uses to accomplish this.

http://blogs.aerohive.com/blog/wi-fi-that-wont-die/cooperative-control-part-3


From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU]
 On Behalf Of Watters, John
Sent: Monday, April 29, 2013 11:55 AM

To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Distributed WiFi model - Thin vs Thick debate 
revisited


What happens to client roaming, RF balancing, and channel selection without a 
controller-based architecture?

If you use the Aruba Airwave AMP management platform, it should be able to keep 
your autonomous APs in sync.




-jcw
  [cid:image001.jpg@01CE44EA.874CDAC0]




John Watters   The University of Alabama

Office of Information Technology

205-348-3992tel:205-348-3992




From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Tim Cappalli
Sent: Monday, April 29, 2013 10:50 AM
To: 
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDUmailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Distributed WiFi model - Thin vs Thick debate 
revisited

What types of controller issues are you seeing that you hope to be fixed with a 
controller-less architecture?


Tim Cappalli, Network Engineer
LTS | Brandeis University
x67149 | (617) 701-7149tel:%28617%29%20701-7149
cappa...@brandeis.edumailto:cappa...@brandeis.edu

On Mon, Apr 29, 2013 at 10:51 AM, Barros, Jacob 
jkbar...@grace.edumailto:jkbar...@grace.edu wrote:
Hello all.  We are seriously considering replacing our Aruba infrastructure in 
favor of a distributed model.  We are having controller issues this academic 
year and the appeal of a controller-less model is strong.

It feels like I am coming full circle to where I was six years ago.  Though I 
know its not exactly the same, I went back to the thin vs thick debates in the 
archives.  A few things stood out to me as considerations:  One concern was 
vendor longevity.  Another was whether or not the thick AP model would be able 
to keep up with the controller based architecture.  An advantage of the 
controller based architecture that stood out to me was central processing, 
specifically regarding key exchange.

Are these points still valid concerns?  If your administration asked you to 
consider a distributed architecture, what other (vendor-neutral) concerns would 
you have?

Thanks, in advance, for your opinions!



Jake Barros  |  Network Administrator  |  Office of Information Technology
Grace College and Seminary  |  Winona Lake, IN  |  574.372.5100 
x6178tel:574.372.5100%20x6178

Re: [WIRELESS-LAN] Distributed WiFi model - Thin vs Thick debate revisited

2013-04-30 Thread Mike King
Don't forget.

Meraki is Cisco.

They bought them, but running them as an independent unit.

Cisco also has they're Flex controller, which is a similar model.

I haven't seen any other vendor with Aerohive's model.  I haven't used it,
just sat through a few sales presentations.  But from what I've seen, it's
very interesting.

It's not as cut and dried as it was 1 year ago.  The Thick/Thin models
are merging in more ways than one.

Mike



On Tue, Apr 30, 2013 at 9:51 AM, Lee H Badman lhbad...@syr.edu wrote:

  I will second that emotion. Though we are a large Cisco controller-based
 environment, we run an extremely successful Meraki deployment in London:
 http://www.meraki.com/customers/higher-education/syracuse-university-london


  and I also have a small Aerohive deployment in play.

  I would recommend that anyone give either solution as much consideration
 as any of the controller-based solutions, to include a legitimate trial.
 I'd also not get so hung up on white papers that tout AP performance and
 seriously consider whether the system management and vendor support
 mechanisms is effective for your own particular needs.


  -Lee


  *Lee H. Badman*
 Network Architect/Wireless TME
 ITS, Syracuse University
 315.443.3003
   --
 *From:* The EDUCAUSE Wireless Issues Constituent Group Listserv [
 WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] on behalf of Hall, Rand [
 ha...@merrimack.edu]
 *Sent:* Tuesday, April 30, 2013 9:10 AM

 *To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
 *Subject:* Re: [WIRELESS-LAN] Distributed WiFi model - Thin vs Thick
 debate revisited

   Yes, I think there's a mistaken impression about the Aerohives and
 Merakis out there. Some of it is FUD from the big iron vendors. Some of it
 is old-timers like me questioning the over-hyped magic cloud.

  The stuff works. Anyone looking to move off their current solution
 should take a look. It's not perfect, but neither is the establishment.

  Rand

  P.S. A little de-FUD if you want it: http://www.meraki.com/trust/#oob




 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 59 minutes defining
 the problem and one minute finding solutions. – Einstein


 On Mon, Apr 29, 2013 at 3:05 PM, Hurt,Trenton W. 
 trent.h...@louisville.edu wrote:

  With the aerohive solution this is done thru cooperative control
 amongst the aps that are RF neighbors with each other.  Here is article
 that discusses the protocols that aerohive uses to accomplish this.



 http://blogs.aerohive.com/blog/wi-fi-that-wont-die/cooperative-control-part-3
 

 ** **

 ** **

 *From:* The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:
 WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] *On Behalf Of *Watters, John
 *Sent:* Monday, April 29, 2013 11:55 AM

 *To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
 *Subject:* Re: [WIRELESS-LAN] Distributed WiFi model - Thin vs Thick
 debate revisited

  ** **

 ** **

 What happens to client roaming, RF balancing, and channel selection
 without a controller-based architecture?

 ** **

 If you use the Aruba Airwave AMP management platform, it should be able
 to keep your autonomous APs in sync.

 ** **

 ** **

 -jcw
 [image: cid:image001.jpg@01CE44EA.874CDAC0]

 ** **

 *
 *

 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.EDUWIRELESS-LAN@LISTSERV.EDUCAUSE.EDU]
 *On Behalf Of *Tim Cappalli
 *Sent:* Monday, April 29, 2013 10:50 AM
 *To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
 *Subject:* Re: [WIRELESS-LAN] Distributed WiFi model - Thin vs Thick
 debate revisited

 ** **

 What types of controller issues are you seeing that you hope to be fixed
 with a controller-less architecture?


 

  

 Tim Cappalli*, *Network Engineer
 LTS | Brandeis University
 x67149 | (617) 701-7149
 cappa...@brandeis.edu

 ** **

 On Mon, Apr 29, 2013 at 10:51 AM, Barros, Jacob jkbar...@grace.edu
 wrote:

 Hello all.  We are seriously considering replacing our Aruba
 infrastructure in favor of a distributed model.  We are having controller
 issues this academic year and the appeal of a controller-less model is
 strong. 

 ** **

 It feels like I am coming full circle to where I was six years ago.
  Though I know its not exactly the same, I went back to the thin vs thick
 debates in the archives.  A few things stood out to me as considerations:
  One concern was vendor longevity.  Another was whether or not the thick AP
 model would be able to keep up with the controller based architecture.  An
 advantage of the controller based architecture that stood 

Multi vendor interoperability on Campus

2013-04-30 Thread Becker, Jason



What are others doing to getinteroperabilitywhen you have multiple wireless vendors on campus? We are transitioning to a new system and trying to think of all the issues we may run into during this.


A little background about our layout… abuilding will have all the same vendor AP's but adjacent building may not, over 100 buildings on campus, total of 4000 across campus,systemswill have different ip pool space,and limited outdoor coverage.

Ideas
1. Same ssid across both systems and let the clients choose what system.
2. Samessid and adjust the probe/reponse thresholds so clients outside of a building don't connect.
3. Have versions of ssids for each system so clients can choose what ssid to connect to.




Thanks,
Jason


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Question about the signal strength of cisco Aironet 3602E on 5GHz

2013-04-30 Thread Linchuan Yang
Dear All

We found that the signal strength of cisco Aironet 3602E (with omni directional 
antenna AIR-ANT2524DW-R)  on 5GHz is quite unstable (2.4GHz is good). I am 
using a HP win7 laptop, and sitting 5 meters away from the AP. Usually the 
signal strength on the laptop is only one or two bars (out of 5). However, I 
use some third party application (e.g. Xirrus, Ekahau), the signal strength is 
-47 (almost same value as shown on the controller). Do you have the similar 
problem? Is it a bug of Win7 or Cisco WLC (We are using version 7.2.111.3)?

Have a nice day.

Yours,
Linchuan Yang (Antony)
Wireless Networking Analyst
Network Assessment and Integration,
IITS-Concordia University
Tel: (514)848-2424 ext. 7664



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



Re: [WIRELESS-LAN] Question about the signal strength of cisco Aironet 3602E on 5GHz

2013-04-30 Thread James Helzerman
Hi.  Are you using RRM to manage the radios?  If so what is the reported
power output RRM is setting?  If you manually set power to max do you get a
performance increase?  We have both 3602i and 3602e series with dipoles you
mention with no issues.  We are running 7.2 code currently but plan to
goto7.5 later this summer.

-Jimmy

University of Michigan


On Tue, Apr 30, 2013 at 11:36 AM, Linchuan Yang
linchuan.y...@concordia.cawrote:

  Dear All

 ** **

 We found that the signal strength of cisco Aironet 3602E (with omni
 directional antenna AIR-ANT2524DW-R)  on 5GHz is quite unstable (2.4GHz is
 good). I am using a HP win7 laptop, and sitting 5 meters away from the AP.
 Usually the signal strength on the laptop is only one or two bars (out of
 5). However, I use some third party application (e.g. Xirrus, Ekahau), the
 signal strength is -47 (almost same value as shown on the controller). Do
 you have the similar problem? Is it a bug of Win7 or Cisco WLC (We are
 using version 7.2.111.3)?

 ** **

 Have a nice day.

 ** **

 Yours,

 Linchuan Yang (Antony)

 Wireless Networking Analyst
 Network Assessment and Integration,
 IITS-Concordia University
 Tel: (514)848-2424 ext. 7664

 ** **

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




-- 
James Helzerman
Wireless Network Engineer
University of Michigan - ITS Communications Systems and Data Centers
Phone: 734-615-9541

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



Re: [WIRELESS-LAN] Question about the signal strength of cisco Aironet 3602E on 5GHz

2013-04-30 Thread Chris Murphy
Are you seeing actual performance issues, or just issues with the display of 
signal strength?

-Chris

On Apr 30, 2013, at 11:36 AM, Linchuan Yang linchuan.y...@concordia.ca
 wrote:

 Dear All
  
 We found that the signal strength of cisco Aironet 3602E (with omni 
 directional antenna AIR-ANT2524DW-R)  on 5GHz is quite unstable (2.4GHz is 
 good). I am using a HP win7 laptop, and sitting 5 meters away from the AP. 
 Usually the signal strength on the laptop is only one or two bars (out of 5). 
 However, I use some third party application (e.g. Xirrus, Ekahau), the signal 
 strength is -47 (almost same value as shown on the controller). Do you have 
 the similar problem? Is it a bug of Win7 or Cisco WLC (We are using version 
 7.2.111.3)?
  
 Have a nice day.
  
 Yours,
 Linchuan Yang (Antony)
 Wireless Networking Analyst
 Network Assessment and Integration,
 IITS-Concordia University
 Tel: (514)848-2424 ext. 7664
  
  
 ** Participation and subscription information for this EDUCAUSE 
 Constituent Group discussion list can be found at 
 http://www.educause.edu/groups/.
 

---
Chris Murphy - MIT IST Network Operations - ch...@mit.edu





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



smime.p7s
Description: S/MIME cryptographic signature


RE: [WIRELESS-LAN] Question about the signal strength of cisco Aironet 3602E on 5GHz

2013-04-30 Thread Linchuan Yang
Thank you, Chris and Jimmy

In fact, I configured the power level of 5GHz to level 1. And I think this 
maybe the issues with the display of the signal strength. However, with 3602I 
and other model, we do not see the similar problem.

Yours,
Linchuan Yang (Antony)
Wireless Networking Analyst
Network Assessment and Integration,
IITS-Concordia University
Tel: (514)848-2424 ext. 7664



From: The EDUCAUSE Wireless Issues Constituent Group Listserv 
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Chris Murphy
Sent: April-30-13 11:54 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Question about the signal strength of cisco Aironet 
3602E on 5GHz

Are you seeing actual performance issues, or just issues with the display of 
signal strength?

-Chris




Hi.  Are you using RRM to manage the radios?  If so what is the reported power 
output RRM is setting?  If you manually set power to max do you get a 
performance increase?  We have both 3602i and 3602e series with dipoles you 
mention with no issues.  We are running 7.2 code currently but plan to goto 7.5 
later this summer.

-Jimmy

University of Michigan


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



Microsoft Surface WiFi issue - resolved

2013-04-30 Thread Zeller, Tom S
Rolling back the driver one version fixed it.  I believe Surface Pro has a
Marvel chip.

Tom Zeller
Senior Technology Analyst
Indiana University
zel...@indiana.edu
(812) 855-6214




On 4/24/13 5:23 PM, Zeller, Tom S zel...@indiana.edu wrote:

I'm no longer directly involved in the WiFi here, but I was helping
someone with a Microsoft Surface (Intel version) that is perfectly
up-to-date.  My Mac Air WiFi worked perfectly with our Aruba AP throughout
the exercise. His would connect, get DHCP, get a lease renewal in five min
(ten min lease) and a few minutes later Windows would tell him he had
limited Internet, but in fact he could only ping his own IP and not the
router (that's pretty limited!).  The WiFi bars icon never wavered.  I'm
suspecting a failure to renegotiate keys.

Anyone else seeing Surface WiFi issues?

Tom Zeller
Senior Technology Analyst
Indiana University
zel...@indiana.edu
(812) 855-6214



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