RE: How to get a Thread node join into a UDP Multicast group

jhc — Wed, 10 May 2023 12:40:03 GMT

Thank you very much!

Marte Myrvold — Wed, 10 May 2023 08:53:21 GMT

Hi,

To make a Thread device subscribe to an IPv6 multicast address, you can use the ipmaddr add command:

ipmaddr add <ipaddr>

Then you can send the UDP message to this multicast address.

For example:

Node 1 (and other nodes that should subscribe to the multicast address)

> ot ipmaddr add ff05::1 > ot udp open> ot udp bind :: 1234

Node 2

> ot udp open> ot udp send ff05:0:0:0:0:0:0:1 1234 hello

Best regards,
Marte