Track 2 - Internet Routing and IP Network management (7-Oct-96)
Multicast
3) Protocols
A) IGMP protocol
Query/Reponse for Group membership and response
Query format [group addres = 0]
Host member of any groups? [to 224.0.0.1 from routers]
(use TTL of 1 to provide scope)
look for response
Response
format - 1 per group
all routers need to listen to response to
routers don't flood group
if response within time period - don't send another
Join source -specific group
Leave source -specific group
Rendezvous-point ID for PIM