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Log Reference

AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R007

This document supports all the logs of device, including the parameters, meaning, possible causes and solution.

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MSDP/4/CHECK_SOCKET_FAIL:In VPN instance "[vpn-instance-name]", failed to handle msdp socket. The socket ID was [socket-id], the peer was [peer-address], the operation code was [operation-code], the error code was [error-code].(FlCode=[STRING][ULONG])


The backup MSDP socket information is incorrect or the configurations on the standby main board are incorrect.


Parameter Name Parameter Meaning

Name of a VPN instance


Socket ID


Peer address

Operation code
  • 1: The standby main board checks the socket.

  • 2: The standby main board obtains the local port number and address information.

  • 3: The standby main board obtains the remote port number and address information.

  • 4: The MD5 option is set.

  • 5: The KeyChain option is set.

  • 6: The standby main board checks the boundary of the received packet.

  • 7: Attributes for socket backing up are set.

  • 8: The application-ready option is set.

  • 9: Asynchronization attributes are set.


Error code


Name of the source code file and the line number of this log message

Possible Causes

The set socket option was incorrect.


  • This log message is informational only, and no action is required.
Updated: 2019-05-29

Document ID: EDOC1000097209

Views: 134060

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