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Log Reference

S9300, S9300E, and S9300X V200R010C00

This document provides the explanations, causes, and recommended actions of logs on the product.
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SOCKET/4/TCP_AUTH_FAILED:TCP authentication failed. (AuthenticationType=[STRING], Cause=[STRING], SourceAddress=[IPADDR], SourcePort=[USHORT], ForeignAddress=[IPADDR], ForeignPort=[USHORT], Protocol=[STRING], VpnInstanceName=[STRING])


An upper-layer application protocol configured the MD5 or keychain authentication password for the TCP connection, but the MD5 or keychain authentication failed when the TCP connection was established.


Parameter Name Parameter Meaning

Authentication type. It can be MD5 or keychain.

Cause Cause of the authentication failure.
SourceAddress Source IP address.
SourcePort Source port number.
ForeignAddress Destination IP address.
ForeignPort Destination port number.

Upper-layer application protocol, such as BFD and LDP.

VpnInstanceName VPN instance name.

Possible Causes

Cause 1:

Different authentication modes were configured on the local and remote devices. Do not configure MD5 authentication on one end and configure keychain mode on the other end.

Cause 2:

Different MD5 authentication passwords were configured on the local and remote devices.

Cause 3:

Different keychain encryption algorithms and authentication passwords were configured on the local and remote devices.


  1. Based on the configuration requirements and procedures of MD5 or keychain mode, check whether the configuration is correct.
Updated: 2019-08-21

Document ID: EDOC1000142069

Views: 541799

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