Why can I ros2 topic list but I cannot ros2 topic echo?

Alex Servo

July 16, 2025 18:56

0

• Official comment

  

  Shaur Kumar

  July 16, 2025 19:03

  Hi Alex,
  
  You likely have mismatched DDS configurations. Please ensure the RMW_IMPLEMENTATION, CYCLONEDDS_URI, and contents of `cyclonedds.xml` (pointed to by your CYCLONEDDS_URI) all match then ros2 daemon stop and ros2 daemon start. Please ensure that all of these are consistent across all computer hosts and any running containers you want to be discoverable across the network.
  
  Thanks,
  Shaur

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