Using the region-validation command, you can enable the area verification function.
Using the undo region-validation command, you can disable the area verification function.
By default, area authentication is disabled.
Usage Scenario
After the command is configured, you can add or delete various configurations of area authentication. To apply these configurations, you need to enable the area authentication function in the BGP view.
Area verification is to combine multiple trusted ASs into an area and multiple areas into an area confederation, and then check whether the routes from EBGP peers in external domains belong to the local area. In this manner, external areas are prevented from hijacking the routes in the local area. The area authentication configuration cannot be advertised to neighbors. Different devices (or different VSs) need to be configured separately.Precautions
The area-authentication-mode command only enables area authentication. To make the configurations take effect, you need to run the region-validation [confed-check strict] and bestroute region-validation [allow-invalid] commands in the BGP view.