We are using private IP address pool with decent DHCP lease time, and iPAD would be available in Canadian market later May, hopefully there will be sort of patch or fix available by that time.
Leo Song, Cluster Lead - Networking and Security (519) 824-4120 x 53181 CCS, University of Guelph ----- Original Message ----- From: "Frank Bulk" <frnk...@iname.com> To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Sent: Tuesday, April 20, 2010 9:34:46 PM GMT -05:00 US/Canada Eastern Subject: Re: [WIRELESS-LAN] Princeton determines cause of an iPad problem Another idea is provide long(er) lease times just to the Apple iPads, based on OUI. Frank -----Original Message----- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:wireless-...@listserv.educause.edu] On Behalf Of Jeffrey Sessler Sent: Monday, April 19, 2010 10:28 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Princeton determines cause of an iPad problem It would seem that Princeton could temporarily (or permanently) avoid the problem, and thus all the media hype and blocking of the iPads, by simply increasing their DHCP lease time from their stated 1-3 hour time to something more reasonable. Unless your base of devices include a large number of drive-bys (devices seen only once and never again), I'm not sure that a lease time of 1-3 hours will result in better DHCP IP address pool use than say a lease time of 24 hours. We toyed with extremely short leases years ago but found they resulted it various device anomalies. We now run with lease times of at least 24 hours and our average IP address consumption changed very little. Jeff >>> "Zeller, Tom S" 04/18/10 8:54 PM >>> http://www.net.princeton.edu/announcements/ipad-iphoneos32-stops-renewing-le ase-keeps-using-IP-address.html iPad gets DHCP lease. If iPad happens to be sleeping during the renewal time it awakens and uses the IP number forever (until shut down of unit or WiFi or going out of range) Tom Zeller Indiana University ********** 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/.
