Configuration Management will not retrieve the configuration of the modules which have valid TELNET credentials, if a previous module had wrong credentials.
If in a CAT switch, the supervisor and ATM module have the same credentials and RSM has a different one, Configuration Management will retrieve the configurations of Supervisor, fail for RSM module and display the following message, "ERROR: Incorrect Telnet passwords" and will also fail for ATM module displaying the same error even if it has valid credentials.
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Telnet transport mechanism cannot retrieve or update device configurations if any remote devices have nonstandard device prompts. Accepted, standard device prompts on Cisco IOS devices have strings ending with greater than symbol (>) or the pound symbol (#) at Telnet login and enable mode. Accepted, standard device prompts on Catalyst devices end with keyword "enable" at Telnet enable mode.
It is recommended that all managed devices should have passwords.
