Connectrix: Cisco DCNM or NDFC Causes Harmless Error Entries in Nexus Logs

Summary: Cisco DCNM or NDFC Causes Harmless Error Entries in Nexus Logs: DAEMON-3-SYSTEM_MSG: Error: kex_exchange_identification: Connection closed by remote host - dcos_sshd.

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Symptoms

Show logging output: 
2023 Mar 30 14:31:18 PP-001-MDS9710-SAN-A-104 %DAEMON-3-SYSTEM_MSG: error: kex_exchange_identification: Connection closed by remote host - dcos_sshd[27183]
2023 Mar 30 14:31:43 PP-001-MDS9710-SAN-A-104 %DAEMON-3-SYSTEM_MSG: error: kex_exchange_identification: Connection closed by remote host - dcos_sshd[27242]

This is seen with DCNM 11.5 and NDFC 12.0.

Cause

Behavior appears to match that described in Cisco Issue ID: CSCvz93912

Resolution

Workaround:
These messages are harmless and can be ignored. The messages do not appear if the logging level for "daemon" is set to a value below 3: Logging level daemon 2.

CLI Commands to change logging level for Daemon alert and save change to startup config. 
server# configure terminal
server(config)# logging level daemon 2
server(config)# exit
server# copy running-config startup-config

Fixed Releases:
Known Fixed Releases: 12.1.1e, 11.5(4) patch
 
NOTE: If still get the error message with DCNM 11.5(4), on request Cisco can provide a patch for DCNM 11.5(4) to resolve this issue.

    Additional Information

    Quick View of Cisco issue ID CSCvz93912  This hyperlink is taking you to a website outside of Dell Technologies.
    (For complete details of issue, log in to Cisco site is required)

    Affected Products

    Connectrix MDS-Series Data Center Network Manager
    Article Properties
    Article Number: 000211923
    Article Type: Solution
    Last Modified: 02 Aug 2023
    Version:  4
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