Specify Which AS Numbers to Include in the Generated Route

By default, all AS numbers from all contributing paths are included in the generated route's path. To include only the longest common leading sequences from the contributing AS paths, include the brief option when configuring the route. If doing this results in AS numbers being omitted from the generated route, the BGP ATOMIC_ATTRIBUTE path attribute is included with the generated route.

[edit routing-options generate (defaults | route)] 

brief; 

To explicitly have all AS numbers from all contributing paths be included in the generated route's path, include the full option when configuring routes. Include this option when configuring an individual route in the route portion of the generate statement to override a retain option specified in the defaults portion of the statement.

[edit routing-options generate (defaults | route)] 

full; 

For a list of hierarchy levels at which you can configure these statements, see the statement summary sections for these statements.