I am not so sure. If the controller is caching the DHCP response as it appears to be doing, then 200 clients in cache simultaneously is a very likely event.
<><Randy ________________________________ From: Lee H Badman [mailto:[EMAIL PROTECTED] Sent: Friday, October 05, 2007 9:00 AM To: [email protected] Subject: Re: [WIRELESS-LAN] Open Cisco COntroller Caveat/DHCP issue Hi Frank- I would hope. But the wording leaves a lot to the imagination, and we are seeing enough oddities on occasion that could point at something like this that clarification is in order, if nothing more than for a sanity check. Lee ________________________________ From: Frank Bulk [mailto:[EMAIL PROTECTED] Sent: Friday, October 05, 2007 8:45 AM To: [email protected] Subject: Re: [WIRELESS-LAN] Open Cisco COntroller Caveat/DHCP issue Lee: I think the key phrase is "at the same time". This may be a bug found when Cisco or someone else did scalability testing with test tools, not a likely event in production. Frank ________________________________ From: Lee H Badman [mailto:[EMAIL PROTECTED] Sent: Friday, October 05, 2007 7:29 AM To: [email protected] Subject: [WIRELESS-LAN] Open Cisco COntroller Caveat/DHCP issue I'm trying to get clarification on this open caveat, but so far can't get a clear answer on the specifics of the bug: CSCsj25953-When 200 or more wireless clients try to associate to a controller at the same time, the clients become stuck in the DHCP_REQD state. The controller receives the DHCP offer from an external DHCP server but does not send the offer to the access point in LWAPP. Obviously, getting to 200 clients on a single controller is routine operations on a busy network, especially when one controller has 150 associated access points. Has anyone else dug in on this one, and gotten any real details? It sounds potentially catastrophic, or that it could be relatively harmless, but without more detail it's hard to know... Regards- Lee H. Badman Wireless/Network Engineer Information Technology and Services Syracuse University 315 443-3003 ********** 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/.
