Multicast and wirerless

[ggladney]

I have a 4404 controller running 6.0.202 code and more more people have Mac running bonjour and wanting to use Airplay.  I see how to turn on Multicasting and even provide a Multicast address for IGMP snooping but does anyone have a good feel as to the overall load Multicast adds to the wireless network?

Thanks,

Gary

[Arthur Burger]

It depends on the type of deployment you have.

If the network infrastructure supports multicast, you should enable Multicast - Multicast as the controller multicast mode and choose a multicast address in the 239.X.X.X range.

If your network is not capable of supporting multicast, you would want to select Multicast - Unicast mode. This mode puts a load on the controller and on the wireless network as the Multicast is then sent as a unicast to each access point instead.

These support articles should help you.

Bonjour Deployment Guide

http://www.cisco.com/en/US/products/hw/wireless/ps4570/products_tech_note09186a0080bb1d7c.shtml

Multicast Deployment Guide

https://supportforums.cisco.com/docs/DOC-14713