Apparently once a device sees there is no direct Internet access it stops trying, at least for a period of time. We found the portal made a huge impact on our DHCP usage.
Bruce Osborne Wireless Engineer IT Infrastructure & Media Solutions (434) 592-4229 LIBERTY UNIVERSITY Training Champions for Christ since 1971 -----Original Message----- From: Chuck Anderson [mailto:c...@wpi.edu] Sent: Thursday, July 23, 2015 9:49 AM Subject: Re: SSID jumping with Win 8.1 (Surface Pro 3) on Aruba On Thu, Jul 23, 2015 at 11:17:25AM +0000, Osborne, Bruce W (Network Services) wrote: > That may be the issue. Our Guest SSID has a portal, but for a while we ran an > open SSID with no portal. > With no portal, we quickly found DHCP scopes filling up due to mobile devices > constantly associating, checking for Internet access as they roamed around > campus. Even with a portal, don't devices still get a DHCP lease? We had to deal with this by making our subnet and DHCP scope large enough for any potential mobile devices automatically associating, even if they didn't have credentials for the portal. ********** 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/.
