There was a post on Cisco support forum about DCA interval and some senior contributors (not Cisco guys though) suggested to set it to 24 hours. I tried to search for it now but could not find it. We did have the AP channel change issues which affected about 50 APs at once. We thought the default 10 minutes interval is too aggressive and 24 hours is too long. We started with 1 hour to see how it went and we haven't had any issues.
--- Dennis Xu Analyst 3, Network Infrastructure Computing and Communications Services(CCS) University of Guelph 519-824-4120 Ext 56217 d...@uoguelph.ca www.uoguelph.ca/ccs ----- Original Message ----- From: "Don Sullivan" <dsulli...@samford.edu> To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Sent: Thursday, October 3, 2013 3:48:08 PM Subject: Re: [WIRELESS-LAN] Cisco WLC dynamic channel assignment (DCA) interval Can I ask what led to making this change? I am struggling trying to understand moving from a default of 10 minutes to 24 hours and the impact. I have been reading the documentation and reference for this setting in trying to determine if this is something I should implement but there is very little detail concerning the timer/interval. Based on the replies, 24 hours seems to be the choice and yet I cannot find through a google search why this is better. Appreciate any feedback given. Thanks, Don Sullivan Network Administrator | Office: 205.726.2111 | email: dsulli...@samford.edu -----Original Message----- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Mark Duling Sent: Thursday, October 03, 2013 1:00 PM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: [WIRELESS-LAN] Cisco WLC dynamic channel assignment (DCA) interval A long time ago I increased the interval for this up to a pretty high setting from the default (I think it was 10 min) at the suggestion of TAC engineer to stop them from changing channels so frequently. 802.11x > RRM > Dynamic Channel Assignment (DCA) I have no evidence that there is any issue with it, but a lot has changed since then. What intervals do others use for DCA? ********** 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/.
