To follow up on a previous posting, I'd heard back from Cisco re: world-mode/DTPC. The SE had inquired with the system engineering group. They reported that they had not experienced any issues with MAC clients since they upgraded to the latest release of 5.2. They have therefore left DTPC at default. Which is how I have left it although I run 6.0.182.
In that thread, there was also talk of an Apple/Broadcom driver bug. Reviewing that, it looks to me like there may still be an issue in selecting an available 5G radio. I have a Mac running 10.5.7 using a Broadcom based card w/driver 50.10.38.35. If I disable my 5G radio on a Cisco LW AP (1142 running 6.0.182), the client immediately re-associates to the 2.4G radio. When I re-enable the 5G radio, the Mac remains connected to the 2.4G service. I have to disable/re-enable the Mac's Airport card to regain connectivity to it where it will then immediately connect (bonding channels 64/63 and using the 800ns SGI). The plist file does appear to record the 2.4G channel used but not 5G channels. Does anyone know if this is an intended behavior or if the Mac should prefer the 5G over 2.4G radio? -- > -----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 5:11 PM > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > Subject: Re: [WIRELESS-LAN] Self-assigned IP on Macs > > Perhaps I was erroneous in equating the two through a Cisco doc > referencing > DTPC to world-mode. > '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.)' > > DTPC does appear to be CCX related, so it is likely irrelevant with > regard > to the mentioned Apple/Broadcom bug. > > Running 6.0.182, > 'config 802.11a world-mode' is not an available option. > 'config 802.11a dtpc' is. > 'show 802.11a' will show the status of DTPC. > > I'll inquire w/Cisco. > > > -- > > > > > > -----Original Message----- > > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > > [mailto:wireless-...@listserv.educause.edu] On Behalf Of Matt Grover > > Sent: Thursday, October 15, 2009 2:51 PM > > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > > Subject: Re: [WIRELESS-LAN] Self-assigned IP on Macs > > > > It's under: > > > > show 802.11a(or b) > > > > -Matt > > > > Bob Richman wrote: > > > So, how about the show command that displays the current setting? > > > > > > -----Original Message----- > > > From: The EDUCAUSE Wireless Issues Constituent Group Listserv > > [mailto:wireless-...@listserv.educause.edu] On Behalf Of Matt Grover > > > Sent: Thursday, October 15, 2009 1:21 PM > > > To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > > > 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 > > > > > > > > > -- > > ------------------------------------------------------------ > > 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/ > > ------------------------------------------------------------ > > > > ********** > > 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/.
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