Error is seen when the alarm process encounters an error when sending a message.
The CONNECTION_SEND_ERROR message is logged each time the alarm process (alarmd) receives an error while it is trying to send a message.
The error message may look similar to the following:
CONNECTION_SEND_ERROR: alarmd_send_msg: ipc_msg_write failed: Message too long
This error is very rare and what might cause it is largely unknown.
If you encounter this error, try to determine what effect, if any, it is having on the service of your router; then consult Juniper technical support representative for further troubleshooting.