IP Multicasting

[deen () slt lk]

Hello Nanog,


We are developing a streaming video based application. Can someone tell me
whether 

(1) Multicasting is necessary for such an application 
(2) How do we configure multicasting, and multicast (224.x.x.x) to Global IP
Conversion, on Cisco Routers. Some useful sites will be handy.
(3) What is the function of the MBone network, and whether it is required
for such a situation.


Deen
Sri Lanka Telecom
Internet