Using the information provided, identify which node you need to change the address for. The network cannot communicate properly if some nodes have the wrong baud rate. The Detective will indicate that you have multiple baud rates on the network, but will not be able to resolve the problem beyond that point. The master should stay online and give an error code that indicates wrong baud rates. Check termination, bus length, topology, physical connections, grounding.
Defective nodes can chatter and put garbage on the network.
Nodes supplied with corrupt or noisy power may chatter. Note that the DeviceNet Detective adds traffic of its own. You may have a large accumulated number of CAN errors if you have been connecting and disconnecting nodes. This could also indicate faulty nodes. You should not normally see much Group 1 traffic on most nodes, unless you have Change of State devices on your network.