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IGMP Network Understanding

Posted on 2010-09-03
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Last Modified: 2012-06-21
By referring to attached image , I can understand that Router need to be configured as Multicast Router and  switch need to be configured IGMP Snooping .

(1)
I like to know how to configure the IGMP Client ( in this case is Video Client / receiver )  ) to broadcast their multicast membership status to the switch and/or router ??


How to configure the video client to join the group address , say 239.1.1.1

(2)
I believe the IGMP client ( video client  / receiver ) is using IGMP to broadcast their multicast membership status to the switch/router , how to configure the IGMP on this IGMP Client ( video client  / receiver ) .

How to configure the video client to broadcast its multicast membership and join the group address , say 239.1.1.1


(3)
How about the "sender" ( in this case is Video Server ) , the sender need to use IGMP to work on this network or just configure it send the data to particular group address , say 239.1.1.1 ???

(4)
I know the Video Client use IGMP to send its membership status to switch/router , how about Video Server ( source ) , would the Video Server use IGMP in this network ???  

 IGMP Network
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Question by:kcn
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Don Johnston earned 500 total points
ID: 33602928
1) You don't. When you start the multicast application, it will transmit the IGMP join messages based on the address you specified within the application.
2) Same as #1
3) The sender doesn't use IGMP. It simply transmits the multicast stream.
4) No
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Author Comment

by:kcn
ID: 33603395
don,

Thanks .

(1) If the Video Client is XP Pro system , can you provide steps for how to join 239.1.1.1 ?

(2 ) If the Video Server is Wins Server 2003 , how to configure it to send data to 239.1.1.1 ?
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by:Don Johnston
Don Johnston earned 500 total points
ID: 33603816
1) There will be an application that it run on the client. When you launch that application, somehow (either a dialog or a configuration parameter) you will specify the IP address of the stream you want to be a member of.

2) You will install either an application or a service and configure it to transmit.

This is all application specific stuff. Kind of like "how do you print a document?". Depends on the application.

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Author Comment

by:kcn
ID: 33607042
Don,

Are you saying that the Video Client and Video Server must be installed by  SAME third party application , maybe the Server Application for Video Server and Client Application for Video Server .

Once run through the application , the video server can specify the multicast group address it will send to and the client video will specify the multicast group address that they are going to join ??

Please confirm my above understanding ...
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by:Don Johnston
Don Johnston earned 500 total points
ID: 33607072
>Are you saying that the Video Client and Video Server must be installed by  SAME third party application

Nope. They don't HAVE to be. There are applications that can send and receive multicast streams. There are also dedicated server apps and dedicated client apps.

>the video server can specify the  multicast group address it will send to and the client video will  specify the multicast group address that they are going to join ??

Correct. Although, there may be some servers/clients that have the address hard-coded so that you can change it.
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Expert Comment

by:Don Johnston
ID: 33607076
Here's a server being configured.

http://www.youtube.com/watch?v=ethBDcn7WwA

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