We are a Cisco thin wireless environment, and see an occasional oddity with wireless clients running Vista and windows 7 with the default IPv6 and Link-Layer Topology settings (IPv6 enabled, Link-Layer Topology Discovery and Mapper both enabled).
IPv6 is disabled on our WLANs (check box under advanced settings) on controllers. Sometimes, a client with these settings enabled has problems connecting in a specific area, while other clients around them going to same AP(s) are fine. Move the problem client to a different area, they do just fine. Disable the settings mentioned, and they do fine in the problem area. The condition occurs enough where we have made disabling these settings a recommendation, but I'll admit I have yet to try to figure out what is really happening at the technical level. I baselessly tend to chalk it up to IPv6 local client-to-client interactions, but it very well could be something with the LLTD (Microsoft's Link Layer stuff) for all I know. Has anyone else experienced this somewhat random condition, and bothered to try to nail down what is happening when it occurs? Thanks very much- Lee Lee H. Badman Wireless/Network Engineer Information Technology and Services Adjunct Instructor, iSchool 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/.
