11:35 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco APs losing
CAPWAP session
Ok, thanks for validating. It also
seemed a bit strange to me and yes, I checked
If you don't have LAG set up, you get MAC flapping on the switch - check
the log on the switch perhaps. I'd have to check the manual, but from
what I recall, it's required. I've run multiple 5508s and WiSMs, but
always did LAG.
Mike
On 1/31/2012 7:39 PM, Jeffrey Sessler wrote:
Are the AP's
-Original Message-
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Mike Goebel
Sent: Wednesday, February 01, 2012 7:41 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
If you
Subject:
Re: [WIRELESS-LAN] Cisco
APs losing CAPWAP session
Hope
this helps a
few who might be experiencing this. I had the same
Interesting theory. We do use DHCP, although we're using DHCP across
the entire campus so if this was the case, I would think we'd see more
of it, not just in the dense student areas.
Thanks,
-dan
Dan Brisson
Network Engineer
University of Vermont
(Ph) 802.656.8111
dbris...@uvm.edu
On
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Cisco APs losing CAPWAP session
I'm curious if any Cisco users out there are experiencing or have
experienced what we're seeing on our campus. This past summer we installed
3502i's in all of our residence halls - approximately 500 total
, not a lack of knowledge, but rather in a lack of will. Vincent
T. Lombardi
From: Dan Brisson dbris...@uvm.edu
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Date: 02/01/2012 07:11 AM
Subject:Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Sent by:The EDUCAUSE Wireless Issues
How large are your wireless subnets? Are you doing any broadcast/multicast
limiting?
You might also check for laptop loops -- anything with wired and wireless
interfaces
with both of them connected at the same time. Just takes one kid with ICS or
Bridging
turned on...
Jeff
**
Message-
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Dan Brisson
Sent: Wednesday, February 01, 2012 9:09 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Good to know
of will. Vincent
T. Lombardi
From: Dan Brissondbris...@uvm.edu
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Date: 02/01/2012 07:11 AM
Subject:Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Sent by:The EDUCAUSE Wireless Issues Constituent Group Listserv
WIRELESS-LAN
of knowledge, but rather in a lack of will. Vincent
T. Lombardi
From: Dan Brisson dbris...@uvm.edu
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Date: 02/01/2012 07:29 AM
Subject:Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Sent by:The EDUCAUSE Wireless Issues Constituent Group
] On Behalf Of Dan Brisson
Sent: Wednesday, February 01, 2012 9:09 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Good to know.
The trunks are actually all 10Gig links, or 90% of them are, so utilization
is most likely not the case, which I'm able
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Dan Brisson
Sent: Wednesday, February 01, 2012 9:09 AM
To:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Good to know.
The trunks are actually all 10Gig links, or 90% of them are, so utilization
is most
Date:Tue, 31 Jan 2012 08:29:57 -0500
From:Dan Brissondbris...@uvm.edu
Subject: Cisco APs losing CAPWAP session
I'm curious if any Cisco users out there are experiencing or have
experienced what we're seeing on our campus. This past summer we
installed 3502i's in all of our residence
: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Good to know.
The trunks are actually all 10Gig links, or 90% of them are, so
utilization
is most likely not the case, which I'm able to verify from Cacti
graphs.
The APs are connected to 3560Xs PoE switches that then uplink into
either a
3560E-12D
Ok, thanks for validating. It also seemed a bit strange to me and
yes, I checked a bunch APs that haven't dropped recently and they
all showed 10-12ms.
One thing that occurred to me is we are doing DHCP snooping and
Dynamic Arp Inspection on the 3560Xs. That is
Listserv
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Dan Brisson
Sent: 01 February 2012 16:35
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Ok, thanks for validating. It also seemed a bit strange to me and yes, I
checked a bunch APs
AM
Subject:Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Sent by:The EDUCAUSE Wireless Issues Constituent Group Listserv
WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
This what we see on the AP at the time the AP disjoins:
*Feb 1 14:16:25.174: %DTLS-5-SEND_ALERT: Send FATAL
Ooooh...
DAI?
I have some bad experiences with DAI and some crappy low end printers. (to
the point where they go in they're own VLAN without DAI) (And some very
expensive video conferencing units)
My switch vendor also had a bug with DAI (over 2 years ago now) that got
resolved pretty quickly
@LISTSERV.EDUCAUSE.EDU] On Behalf Of Dan Brisson
Sent: Wednesday, February 01, 2012 9:09 AM
To:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Good to know.
The trunks are actually all 10Gig links, or 90% of them are, so
utilization
is most likely not the case
: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Good question. Turns out the APs use UTC time, which appears to be correct:
AP#sh clock
*17:29:03.737 UTC Wed Feb 1 2012
-dan
Dan Brisson
Network Engineer
University of Vermont
(Ph) 802.656.8111
dbris...@uvm.edu
On 2/1/2012 12:11 PM, Craig Eyre
@LISTSERV.EDUCAUSE.EDU] On Behalf Of Dennis Xu
Sent: Wednesday, February 01, 2012 12:58 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Dan,
Do you have the APs in public subnets or private subnets? Occasionally we see
this problem happening in our
How big are your subnets the APs reside on, and how is your latency from
the controllers to the APs? I know the APs are latency sensitive.
Mike
On 1/31/2012 8:44 AM, Scott Smith wrote:
We installed around 700 over the summer in our residence halls as well.
I've seen the same issue. However
Subject: Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Back in the bad old 4.0 code days (4 + years ago), I hit a bug when more than
25 people associated to an access point, it would spontaneously reboot.
See if you can see a correlation in WCS, look for number of associations,
number of rouge
Our AP subnets are /24s and latency appears to be under 1ms, which is
what I would expect as everything is fiber connected.
Thanks!
-dan
Dan Brisson
Network Engineer
University of Vermont
(Ph) 802.656.8111
dbris...@uvm.edu
On 1/31/12 8:46 AM, Mike Goebel wrote:
How big are your subnets the
Initially I thought the APs were actually rebooting, but that turns out
not to be the case. The uptime for an AP that experiences this is
always in the range of days if not weeks. It appears to just be the
CAPWAP session that stalls out.
I have tried some correlation with WCS but still
of these random
drop outs.
-AJ
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Dan Brisson
Sent: Tuesday, January 31, 2012 11:33 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Cisco APs losing CAPWAP session
Hope this helps a few who might be experiencing this. I had the same issue
where the uptime for an AP would be a few weeks but the CAPWAP session would
only be a few hours. This occurred when we had heavy load
Are the AP's getting their IP addresses from a DHCP server, and if so, do IP
renewals at all correlate to the AP dropping the CAPWAP session?
Jeff
On Tuesday, January 31, 2012 at 5:29 AM, in message
4f27ecd5.6070...@uvm.edu, Dan Brisson dbris...@uvm.edu wrote:
I'm curious if any Cisco
Constituent Group Listserv
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Dan Brisson
Sent: Tuesday, January 31, 2012 8:30 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: [WIRELESS-LAN] Cisco APs losing CAPWAP session
I'm curious if any Cisco users out there are experiencing or have
30 matches
Mail list logo
