What is multicast addresses and how multicasting works?

[aneganov]

Hi,

I've never used multicasting of any kind before. Whould someone explain what is it, how and where packets are sent?

I think this info should be in FAQ or HOWTO or UserGuide.

[markfm]

Do a search in this forum for Multicast -- I included a URL to a description of it in a response yeseterday.