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Can someone show me an example command for discovery of remote ros2 node and topic that I can try on these two hosts?

Helllo, I just install the ROS2 on 2 hosts.
The ROS2 version of both sides are same and ROS_DOMAIN_ID=10. The iperf show the multicast UDP is working. But when I run talker on one host, the listener on the other host can not get any message. The inner network address is 192.168.0.103 and 192.168.0.104.
Can someone show me an example command for discovery of remote ros2 node and topic that I can try on these two hosts? Thanks!

Thanks for your question. In genral we ask that you please ask questions on http://answers.ros.org following our support guidelines: http://wiki.ros.org/Support

ROS Discourse is for news and general interest discussions. ROS Answers provides a forum which can be filtered by tags to make sure the relevant people can find and/or answer the question, and not overload everyone with hundreds of posts.

I see you’ve also posted this there however please also don’t double post questions. That’s also considered poor etiquette.