Configuring the Two-Phase Validation Mode

Procedure

1. (Optional) Run configuration exclusive

   Configurations are locked in the user view.

   To use the running database exclusively, lock configurations on the router.

   

   After locking configurations, you can edit and commit configurations. Other users can view and edit configurations but cannot commit configurations.

   Other users can configure services in the running database only after you unlock configurations.

2. Run system-view

   The two-phase validation mode is configured.

   

   In two-phase validation mode, the command prompt is as follows:

   <HUAWEI> system-view
   [~HUAWEI] 

3. (Optional) Run display configuration candidate merge

   Configurations in the candidate database are previewed, including uncommitted and committed ones.

   You can run the clear configuration candidate command to delete all uncommitted configurations.

4. (Optional) Run commit trial [ time ] [ persist persistId ]

   The trial running of a system configuration is enabled.

   • To disable the trial running function before the trial running times out, run the abort trial [ { session session-id | persist persistId } ] command to roll the configuration back to the status before the trial running.
   • To view the trial running status of a system configuration, run the display configuration trial status command.

5. Run commit

   The configuration is committed.

   

   To prevent a service from being affected, you can lock the configuration of the service as soon as the service process is initiated. When the configuration is being locked, configurations cannot be committed. The configuration of the service remains locked until the service process successfully starts. During this period, the configuration cannot be committed but can be viewed.

   If the configuration fails to be committed, wait 30 seconds and commit the configuration again. If the configuration fails to be committed again, a user has locked the configuration.

6. (Optional) If the configuration has been locked, run the quit command to return to the user view. Then, run the undo configuration exclusive command to unlock the configuration.
   

   After locking the configuration, you must unlock it after completing the configuration. Otherwise, configurations of other users cannot take effect.