How to Configure an LSR ID on Huawei S5700?

Questions: 

how to Configure an LSR ID on Huawei Quidway S5700?

Answer: 
Procedure
Run:system-view The system view is displayed.
Run:mpls lsr-id lsr-id The LSR ID of the local node is configured.To change a set LSR ID, you must run the undo mpls command in the system view to delete all MPLS configurations.

CAUTION:

-Running the undo mpls command can delete all MPLS configurations including the established LDP sessions and LSPs.

-Configuring an LSR ID is the prerequisite of all MPLS configurations.

-An LSR ID must be manually configured because no default LSR ID is available.

-It is recommended that the IP address of a loopback interface on an LSR be used as the LSR ID.

-Configuring a loopback address helps to ensure a stable LSR ID for the switch because the state of loopback interface does not change, even in the presence of link-down events. Generally, it is also desirable for the LSR ID to be preserved across reboots.