Brian, We have experienced the same issue during the last month. A colleague of mine mentioned that iTunes Library sharing was now ON by default...it could explain a lot! We still have a large layer2 subnet (1000 APs, 4000 users in one subnet...a monster) to provide roaming and, lately, have been killed by Broadcast and Multicast Packets.
In a desperate measure we have blocked (yesterday) on our Fat APs (Proxim AP-2000 and 4000) Multicast (IP range filtering) , IPv6 (Ethertype) and Netbios Name Service (port 137) and Netbios Datagram (port 138). Broadcast packets went during peak from 80 Packets/s to 30 Packets/s and Multicats packets went from 150 Packets/s to 10-20 Packets/s. Our dormatories, based a Aruba controller Architecture, have /24 subnets. No symptoms, no filtering there. We will revert this measure as soon as we upgrade our main campus wireless to a Controller Based Architecture with small subnets. So far not too many HelpDesk Calls... Philippe ---------------------------------- Philippe Hanset IT Manager University of Tennessee, Knoxville Office of Information Technology Network Services 108 James D Hoskins Library 1400 Cumberland Ave Knoxville, TN 37996 Tel: 1-865-9746555 phanset at utk dot edu ---------------------------------- On Tue, 7 Oct 2008, Brian J David wrote: > Greetings > We where wondering how other schools have handled ITunes. We have seen the > ITunes shared library's list exploding in size this year. With all that > multicast traffic everywhere how have you handled the situation. > > Brian > Brian J David > Network Systems Engineer > Boston College > > ********** > 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/.
