Multicast support

[jhenderson0107]

A Linux-based hardware product that I manufacture utilizes multicast to send messages to applications on a local lan.  Clients cast to IP 234.5.6.7 port 8910 and servers subscribe to these messages to identify available clients.   

This all worked fine when using an Asus TM-AC1900 router on my local network.  But, I recently upgraded to an OpnSense -based router (running on a Qotom embedded PC) and I can't figure out how to configure OpnSense to propagate these multicast messages.  I wrote the client and server code above and my understanding is that the router is responsible for this function.  But, I'm inexperienced with multicast and sophisticated routers like OpnSense, so I'd appreciate any guidance that you can provide. 

[hbc]

Multicasts are stopped at broadcast domains. Each router is a border of a broadcast domain. Broad-/multicast will not pass without explicit configuration. For opnsenses exist several plugins to forward/proxy broad-/multicasts.

Search plugins for mdns-proxy, igmp proxy and someone currently develops a generic udp forwarder (search this forum). Plugin depends on your multicast protocol.

[jhenderson0107]

hbc -

Thank you for responding.  I will investigate your suggestions. 

[marjohn56]

Are the server and client on different LAN segments, you don't say. If they are on the same LAN then the router is irrelevant.