Actually, if you are talking about specifically "world-mode" it's under:
CLI: config 802.11a world-mode
or config 802.11b world-mode
-Matt
Garry Peirce wrote:
Under WCS, within the 802.11b/g or A Parameters, it's called:
'Dynamic Tx Power Control'.
On a controller, it's under: Wireless...802.11a...Network...DTPC support.
Via CLI: 'config 802.11a dtpc'
--
-----Original Message-----
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:wireless-...@listserv.educause.edu] On Behalf Of Bob Richman
Sent: Thursday, October 15, 2009 12:02 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Self-assigned IP on Macs
Can you tell us the 'show command' or where in the GUI you find if this
is set? Is it per wlan or AP?
-----Original Message-----
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:wireless-...@listserv.educause.edu] On Behalf Of Garry Peirce
Sent: Thursday, October 15, 2009 11:36 AM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Self-assigned IP on Macs
We also use Cisco and were seeing this issue earlier. It appears to
have
been significantly decreased after I disabled the IPTheft exclusion
policy
in lieu of Apple's aforementioned DHCP adherence to RFC4436.
On Cisco controllers, the capability described below appears to be
called
'Dynamic Tx Power Control DTPC'
"When you enable Dynamic Transmit Power Control (DTPC), access points
add
channel and transmit power information to beacons. (On access points
that
run Cisco IOS software, this feature is called world mode.)"
It is enabled by default (at least in 6.0.182).
Given Jeff's message below I'm thinking of disabling it.
Is there any further info on this Broadcom driver bug/status?
--
-----Original Message-----
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:wireless-...@listserv.educause.edu] On Behalf Of Jeffrey
Sessler
Sent: Wednesday, October 14, 2009 4:00 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Self-assigned IP on Macs
Are the Macs in question associating at 802.11a/n (5GHz)? I've posted
before about a bug in the Mac Broadcom driver which will cause the
client to continuously adjust it's power and may result in an
association to the AP but random communication issues (like failure
to
get an IP). Cisco added a command to disable the World Mode IE
feature
in the beacons until Apple fixes the problem.
config 802.11a(or 802.11b) world-mode disable
I think the above is in 5.2.193 but I'm not sure if it made it into
6.0. I believe however that there is an equivalent individual AP cli
command for it.
Oh, and world mode IE is disabled by default on Cisco autonomous
AP's,
thus you'll likely not encounter the issue with them.
Jeff
Anthony Croome <a.cro...@qut.edu.au> 10/13/2009 9:30 PM >>>
Hi
We are having this problem too. Is there any new information from
people?
We currently run Cisco wireless and have upgraded some locations to
the
new N standard.
The problem "appears" to be isolated in the locations where we have
upgraded but we can't be 100% sure.
It is only appearing on macs, and they claim it works in one place
but
not another. All we can see is that it appears to be rejecting the
dhcpoffer from the dhcp server.
We haven't tried disabling dhcp proxy as discussed earlier in this
thread, but others have said it didn't help.
The latest temporary solution that has worked on two out of two macs
is
===
All commands required at the command line:
sudo ipconfig set en1 BOOTP (case sensitive and en1 is generally the
wireless adapter on macs but it could possibly be different?)
wait 5 seconds and then enter:
sudo ipconfig set en1 DHCP
===
Anthony Croome
QUT
-----Original Message-----
From: The EDUCAUSE Wireless Issues Constituent Group Listserv
[mailto:wireless-...@listserv.educause.edu] On Behalf Of Earl
Barfield
Sent: Friday, 28 August 2009 11:39 PM
To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
Subject: Re: [WIRELESS-LAN] Self-assigned IP on Macs
Date: Thu, 27 Aug 2009 15:58:39 -0500
From: Hector J Rios <hr...@lsu.edu>
Subject: Self-assigned IP on Macs...
Have you guys run into this issue? We run Cisco's lightweight APs
on
WiSMs running code 5.2.193. Mac will associate to our APs but just
won't
obtain an IP address. In the end it assigns itself a self-assigned
IP.
We are seeing this on a lot of new MacBooks and MacBookPros running
10.5.8. If we associate the computer to an autonomous AP it works
fine.
If we boot it in safe mode it works fine too. Everything else it
just
fails.
I had the same problem after ugrading from 4.2.<something> to
5.2.193.0.
Uncheck "Enable DHCP Proxy" under controller->advanced->DHCP and see
if
that fixes it. It worked for me.
--
Earl Barfield -- Academic & Research Tech / Information Technology
Georgia Institute of Technology, Atlanta Georgia, 30332
Internet: earl.barfi...@oit.gatech.edu e...@gatech.edu
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--
------------------------------------------------------------
Matt Grover === University of Florida
Sr. Network Engineer === http://net-services.ufl.edu
m...@ufl.edu === Florida Lambda Rail
(352)273-1061 === http://www.flrnet.org/
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