This is speculation, but based only on the wording of the option it could cause issues if you have devices with multiple interfaces in separate networks with the same MAC (opinion on this varies, but it's allowed and possibly even recommended vs MAC-per-interface). Also if you have any currently hidden (by being in different locations) manufacturer-duplicated-MACs, but those are a problem waiting to happen otherwise anyways. Those two could easily be support headaches, plus it's another check to process on every lease and it really only is needed if you're trying to tightly optimize pool usage.
On Fri, Nov 11, 2016 at 11:22 AM, Mark McNeil [Staff] <mcn...@fordham.edu> wrote: > Atanas, > Actually it is not enabled. If I'm reading the description correctly > this would "expire" the old lease and issue a new one to the user. This > would seem to fix my issue. Infoblox manual says this is off by default. It > would seem preferable to have this enabled by default. Any idea why its off > by default? > > Thanks > > Mark > > On Fri, Nov 11, 2016 at 11:02 AM, Atanas P Atanasov <apata...@syr.edu> > wrote: > >> Mark, >> >> >> >> Do you have “one lease per client” enabled? >> >> >> >> Atanas Atanasov >> >> Network Analyst >> >> Syracuse University >> >> >> >> >> >> *From:* The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto: >> WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] *On Behalf Of *Mark McNeil [Staff] >> *Sent:* Friday, November 11, 2016 10:50 AM >> *To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU >> *Subject:* [WIRELESS-LAN] Odd behavior on Aruba wireless network >> >> >> >> I have an implementation of Alcatel/Aruba wireless. We've been trying to >> manage out DHCP pool as it hits 90 precent quite often. We are seeing this >> strange behavior in that a single user within a short period of time is >> associating and disassociating and as such gets new IP address. The DHCP >> server is retaining the old IP as being active so does not redistribute for >> 30 minutes. The examples I list below show two to three IP addresses being >> given out from the same AP in a few minute period. We've seen IP address >> changes in less that 30 seconds on a regular basis. >> >> >> >> This issue seem to occur in areas of good coverage as well as in marginal >> areas. >> >> Lan IP Address Association time >> Duration Avg. Speed >> >> *172.21.34.49, 172.21.52.16* >> >> * *11/10/16, 4:25 PM 2 minutes 122Mps >> >> *172.21.59.221, 172.21.45.117, * >> >> *172.21.52.217* >> >> * * 11/9/16, 11:57 AM 5 minutes >> >> >> >> >> DHCP server is from Infoblox >> >> >> >> Any thoughts. >> >> >> >> Regards >> >> Mark >> >> >> >> >> >> >> >> >> >> -- >> >> ________________________________________________________________________ >> *Mark McNeil * >> *Director, Network Engineering and Operations* >> *Fordham University | Fordham IT* >> *Tel: 718-817-3763 <718-817-3763>* >> *Business Office: 718-817-3750 <718-817-3750>* >> *Fax: 718-817-5775 <718-817-5775>* >> *email: mcn...@fordham.edu <mcn...@fordham.edu>* >> <http://www.fordham.edu/> >> *http://www.fordham.edu <http://www.fordham.edu/>* >> _____________________________________ >> >> ********** Participation and subscription information for this EDUCAUSE >> Constituent Group discussion list can be found at >> http://www.educause.edu/groups/ >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.educause.edu_groups_&d=DQMGaQ&c=aqMfXOEvEJQh2iQMCb7Wy8l0sPnURkcqADc2guUW8IM&r=SpuW56Gv0ljO5PHKQquxycZWXdpeoXD-65qTCRfbCJA&m=l8GOIDXdpS77V-faqCbvnbD-DSqOe66HZ6Zx5ZrUBfU&s=AMiYbxkHDUcEegjlwV-kbY7zStwlNwQLMidqZX1zeGI&e=>. >> >> ********** Participation and subscription information for this EDUCAUSE >> Constituent Group discussion list can be found at >> http://www.educause.edu/groups/ >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.educause.edu_groups_&d=DQMGaQ&c=aqMfXOEvEJQh2iQMCb7Wy8l0sPnURkcqADc2guUW8IM&r=SpuW56Gv0ljO5PHKQquxycZWXdpeoXD-65qTCRfbCJA&m=l8GOIDXdpS77V-faqCbvnbD-DSqOe66HZ6Zx5ZrUBfU&s=AMiYbxkHDUcEegjlwV-kbY7zStwlNwQLMidqZX1zeGI&e=>. >> >> >> > > > -- > ________________________________________________________________________ > *Mark McNeil * > *Director, Network Engineering and Operations* > *Fordham University | Fordham IT* > *Tel: 718-817-3763 <718-817-3763>* > *Business Office: 718-817-3750 <718-817-3750>* > *Fax: 718-817-5775 <718-817-5775>* > *email: mcn...@fordham.edu <mcn...@fordham.edu>* > <http://www.fordham.edu/> > *http://www.fordham.edu <http://www.fordham.edu/>* > _____________________________________ > ********** Participation and subscription information for this EDUCAUSE > Constituent Group discussion list can be found at http://www.educause.edu/ > groups/. > > -- Jeremy Mooney ITS - Bethel University ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
