We had the exact same issue with our old WiSM1s after upgrading the 6500 they were in to 12.2(33)SXI. Apparently when the WiSMs first booted they sent DHCP requests with a blank hostname (although I think these were running something in the 5.2 train or perhaps earlier). 12.2(33)SXH didn't care and would process the request but SXI did care and would silently discard the requests. This was a huge issue for us because the WiSMs weren't getting addresses for their service ports and couldn't be configured remotely (no console server at that particular site at the time). Later versions of WiSM code seemed better and didn't send DHCP requests with a blank hostname.
As for the 3602s: we just installed a bunch of them and didn't have any issues with them getting DHCP leases. We're running ISC DHCP 3.1.3 and are using 6500s with the VS-S720-10G supervisor running 12.2(33)SXJ. I'd be happy to compare DHCP configs offline if it will help. -- Brandon Case Network Engineer, ITaP Purdue University ca...@purdue.edu Office: (765) 49-67096 Mobile: (765) 421-6259 Fax: (765) 49-46620 PGP Fingerprint: 99CB 02D6 983C 1E2A 015F 205C C7AA E985 A11A 1251 -----Original Message----- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Julian Y Koh Sent: Wednesday, October 17, 2012 7:40 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Cisco 7.3 Code and ISC DHCP On Oct 16, 2012, at 19:49 , Jason Murray <jemur...@zweck.net> wrote: > > This is not completely related, but we just upgraded one of our Cisco > routers, after the upgrade dhcp stopped working because one dhcp option was > blank. 'Debug IP dhcp server' was the only way we would have noticed this > problem. The router was silently discarding the replies. Can you share router model and software versions? -- Julian Y. Koh Manager, Network Transport, Telecommunications and Network Services Northwestern University Information Technology (NUIT) 2001 Sheridan Road #G-166 Evanston, IL 60208 847-467-5780 NUIT Web Site: <http://www.it.northwestern.edu/> PGP Public Key:<http://bt.ittns.northwestern.edu/julian/pgppubkey.html> ********** 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/.
