Receiving and re-advertising RT Constraint routes

All received RTC routes that are deemed valid are stored in the RIB-IN. An RTC route is considered invalid and treated as withdrawn, if any of the following applies:

If multiple RTC routes are received for the same prefix value then standard BGP best path selection procedures are used to determine the best of these routes.

The best RTC route per prefix is re-advertised to RTC peers based on the following rules:

Note:

These advertisement rules do not handle hierarchical RR topologies properly. This is a limitation of the current RT constraint standard.