How to send multicast message from PC to router to start multicast

Dear All
I have a PC and I want to send the video message out through multicast from the PC. Do you think I need to have some special tool installed in the PC to start the multicast ? The PC is directly connected with a router
Thank you
Frank

Hi Frank,
You are welcome.
To sum up basic configuration rules for your network as simply as possible to make the multicast fly:
You need to have an IGP protocol running (OSPF, EIGRP, IS-IS, RIP) on all your routers and make sure that all networks are duly advertised, both the network where the source streamer is, and the networks where the recipients are located. I suppose you already have this.
All routers in your network need to be configured with ip multicast-routing global configuration command.
All interfaces on all routers in your network need to be configured with ip pim dense-mode interface level command.
By this, I am suggesting that you run a simple, if somewhat inefficient, version of multicast routing in your network, the so-called PIM Dense Mode. More preferred version of multicast would be PIM Sparse Mode but that one is slightly more difficult to properly configure and troubleshoot so let's start with the simplest option and test whether it works.
Once again, be careful to configure all your routers with ip multicast-routing (it's not sufficient to configure just the first or the last router with this command - all routers on the path between the source and receivers need to use this command) and ip pim dense-mode (all interfaces on these routers, both "upstream" interfaces going back to the source, and "downstream" interfaces going toward the receivers).
Best regards,
Peter

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