Multicast can be tamed if you have a system that supports multicast pruning (a non-required extension to that protocol) which limits the distribution to stations that subscribe to the stream. Check with your vendor to see if it's supported. If it is, you should find it easily turned on through a WMI/CLI switch.
Station to station blocking is a good idea in most cases but there are collaborative applications that may require its availability. After talking to your researcher about their specific requirement, you may find a way around having to use multicast. But, if not, you could use a separate SSID that supports multicast and peer to peer connections - you may also want to consider moving their port outside your firewall - blocking any University resources from the risks they create (you'd need to know the researchers' need to understand if you can do this without effecting his/her requirements). Regards, Jon Freeman Xirrus, Inc. 303-808-2666 ________________________________ From: Lee H Badman [mailto:[EMAIL PROTECTED] Sent: Friday, August 31, 2007 6:28 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: [WIRELESS-LAN] Cisco LWAPP, multicast/peer to peer blocking modes We have 12 WiSMs at SU (24 controllers) and around 1,550 APs online. By default on the controllers under General System configuration options, Ethernet Multicast Support is disabled by default, and we chose to enable Peer to Peer Blocking Mode. We are being asked a by a researcher to change both of these settings to allow both multicast and peer to peer connections in the WLAN, and our first reaction is to grimace and gnash teeth a bit. Am wondering if anyone is actually allowing multicast on a large WLAN and seeing any problems, added load, or general observations worth noting? Same with peer to peer. Regards to the group- Lee H. Badman Wireless/Network Engineer Information Technology and Services 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/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
