November 7th, 2011, 11:53 AM
Is IGMP needed to send multicast data?
I'm choosing a TCP/IP stack for a NXP LPC2388 microcontroller.
The goal of this chip is to get data from somewhere (let's say a serial port) and to send them to an ethernet network in multicast.
My question is: do I need to have a IGMP module into my stack ?
I'm sure I need it on the receptor, cause it will have to create JOIN/LEAVE/... message.
But i'm guessing now I don't need it on my transmitter... as it is just for sending on a class D IP address.
What do you think ? am I right ?