Prerequisites for X.509v3 Certificates for SSH Authentication
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The X.509v3 Certificates for SSH Authentication feature introduces the ip ssh server algorithm authentication command to replace the ip ssh server authenticate user command. If you use the ip ssh server authenticate user command, the following deprecation message is displayed.
Warning: SSH command accepted but this CLI will be deprecated soon. Please move to new CLI “ip ssh server algorithm authentication”. Please configure “default ip ssh server authenticate user” to make the CLI ineffective.
Use the default ip ssh server authenticate user command to remove the ip ssh server authenticate user command from effect. The IOS secure shell (SSH) server then starts using the ip ssh server algorithm authentication command.