So, how about the show command that displays the current setting? -----Original Message----- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] On Behalf Of Matt Grover Sent: Thursday, October 15, 2009 1:21 PM To: [email protected] Subject: Re: [WIRELESS-LAN] Self-assigned IP on Macs
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:[email protected]] On Behalf Of Bob Richman >> Sent: Thursday, October 15, 2009 12:02 PM >> To: [email protected] >> 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:[email protected]] On Behalf Of Garry Peirce >> Sent: Thursday, October 15, 2009 11:36 AM >> To: [email protected] >> 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:[email protected]] On Behalf Of Jeffrey >>> Sessler >>> Sent: Wednesday, October 14, 2009 4:00 PM >>> To: [email protected] >>> 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 <[email protected]> 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:[email protected]] On Behalf Of Earl >> Barfield >>> Sent: Friday, 28 August 2009 11:39 PM >>> To: [email protected] >>> Subject: Re: [WIRELESS-LAN] Self-assigned IP on Macs >>> >>>> Date: Thu, 27 Aug 2009 15:58:39 -0500 >>>> From: Hector J Rios <[email protected]> >>>> 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: [email protected] [email protected] >>> >>> ********** >>> 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/. > > ********** > Participation and subscription information for this EDUCAUSE Constituent > Group discussion list can be found at http://www.educause.edu/groups/. > -- ------------------------------------------------------------ Matt Grover === University of Florida Sr. Network Engineer === http://net-services.ufl.edu [email protected] === Florida Lambda Rail (352)273-1061 === http://www.flrnet.org/ ------------------------------------------------------------ ********** 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/.
