Internal BGP migration optimization

One or more non-transitory computer-readable media storing instructions that, when executed by one or more processors, cause the one or more processors to migrate a multi-region network including multiple autonomous systems into a single autonomous system by performing the steps of:

• tagging each routing instruction advertised to a global route reflector by a regional route reflector included in one of a plurality of autonomous systems with a unique identifier of the autonomous system corresponding to the regional route reflector that advertised the routing instruction;
• instructing regional route reflectors included in the plurality of autonomous systems to ignore routing instructions received from the global route reflector that are tagged with one of a plurality of unique identifiers allocated to the plurality of autonomous systems;
• and
• migrating one autonomous system of the plurality of autonomous systems by:
• removing the unique identifier from routing instructions advertised to the global route reflector from the regional route reflector;
• and
• instructing the regional route reflector to apply routing instructions received from the global route reflector that are tagged with the unique identifier.

A system comprising:

• a memory storing a migration module;
• and
• a processor coupled to the memory that executes the migration module to perform the steps of:
• tagging each routing instruction advertised to a global route reflector by a regional route reflector included in one of a plurality of autonomous systems with a unique identifier of the autonomous system corresponding to the regional route reflector that advertised the routing instruction;
• instructing regional route reflectors included in the plurality of autonomous systems to ignore routing instructions received from the global route reflector that are tagged with one of a plurality of unique identifiers allocated to the plurality of autonomous systems;
• and
• migrating one autonomous system of the plurality of autonomous systems by:
• removing the unique identifier from routing instructions advertised to the global route reflector from the regional route reflector;
• and
• instructing the regional route reflector to apply routing instructions received from the global route reflector that are tagged with the unique identifier.