How to Configure NAP master device on Huawei S5700?

Questions: 
How to Configure NAP master device on Huawei Quidway S5700?

Answer: 
Procedure
Run:system-view The system view is displayed.
Run:interface interface-type interface-number The interface view is displayed.
Run:nap login neighbor The login to the slave device from the master device is performed.
If the slave device has an empty configuration, you can log in to the slave device from the master device without a user name and a password.
If, however, the slave device is configured with user name(s) and password(s), you must enter the correct user name and password to perform a NAP-based remote login to the slave device.

NOTE:
To ensure security for NAP, the slave device having an empty configuration checks the source address of the Telnet login. If the Telnet source address is the NAP address of the master device that is telnetting to the slave device, the slave device allows the master device to directly log in without being authenticated. This is because by default, the user level of the remote login based on the NAP address is the same as the login through the console interface, which enjoys the highest user level. If the Telnet source address is not the NAP address of the master device, the remote login fails.
If ip source check user-bind enable command is executed on an interface, the interface cannot connect to the NAP neighbor.

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