davidy2001
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Multicast message sent to router
Experts
Can you explain it for me? Source router can send multicast message over several routers to destination router. How does the server send the message(for example, video play in server) to the source router and how does the other PC receive the message from the destination router ? It needs some software or some configuration ? Thank you.
Can you explain it for me? Source router can send multicast message over several routers to destination router. How does the server send the message(for example, video play in server) to the source router and how does the other PC receive the message from the destination router ? It needs some software or some configuration ? Thank you.
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The "registration" process is nothing more than issuing a ARP with the multicast IP address and the corresponding multicast Ethernet MAC address (or whatever L2 protocol you are using MAC address). This is cached in the L2/L3 device that is local to the client.
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ASKER
Great ! i think it can solve my problem. I am reading it. Thank you.
Are you writing your own application that uses multicast?
ASKER
I am just trying to understand Multicast completely. Most papers discuss it a lot, but they never talk about its connection with client PC and that server
Typically the client will talk to the server using unicast. The server will tell the client what multicast IP address it should use.
In some cases a server will periodically send out a MAC level broadcast with a IP multicast address and client software will listen for this. IIRC this is how ghost works.
In both cases the client can use IGMP join to join the multicast group.
In some cases a server will periodically send out a MAC level broadcast with a IP multicast address and client software will listen for this. IIRC this is how ghost works.
In both cases the client can use IGMP join to join the multicast group.
ASKER
I use command "ip igmp join-group 224.x.x.x" at destination router. How can i let the client PC receive these multicast message from the router?
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