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

[jhc]

Hi all

How to get a thread node to join into a custom UDP Multicast group?

I found the CLI command like this:

But I couldn't find any CLI command to add a custom multicast group.

Is it possible to add a custom multicast group?

[Marte Myrvold]

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

[jhc]

Thank you very much!