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The root User Cannot Telnet the MA5600 Because the root User Does Not Quit the NMS

Publication Date:  2012-07-25 Views:  62 Downloads:  0
Issue Description
The version of the MA5600 is MA5600V300R002B02D260.
When the root user telnets to an MA5600, the system prompts "This user has logged in!"
The super user can log in to the MA5600. Run the display terminal user all command to query the status of the user. It is found that the status of the root user is online. 
 
Alarm Information
Null
Handling Process
Log in to the MA5600 through the serial port on site, and it is found that the login interface displays the information about the NMS server. Quit the NMS server, and then quit the MA5600. The telnet recovers. Query parameter idle-timeout of the device. It is found that the idle timeout time is five minutes. Log in to the MA5600 again, and then log in to the NMS server from the MA5600. Then, remove the serial port cable. In 10 minutes, run the who command to query the status of the login user on the NMS server.
# who
n2kuser pts/7 Oct. 31 16:09 (61.1.1.85)
It is found that the MA5600 is still on the NMS. Telnet the MA5600, and the system prompts that the user has logged in. Thus, it is determined that because the root user does not quit the NMS after the on-site device commissioning, the system prompts that the user has logged in when the root user telnets the MA5600. Quit the root user by logging in to the MA5600 from the serial port. Then, the problem is solved. 
 
Root Cause
The root user has logged in to the NMS for the on-site device commissioning, but later, the root user does not quit. Thus, when the root user telnets the MA5600, the system prompts that the user has logged in. 
Suggestions
If you log in to the MA5600 through the serial port as a root user, quit the root user when you log in to the NMS server; otherwise, the root user on the MA5600 is online, and cannot quit according to the setting of the idle-timeout. As a result, when you telnet the MA5600 as a root user, the system prompts that the user has logged in. 

END