BGP Partial Route Advertisements
Partial BGP (Border Gateway Protocol) route advertisement involves selectively sharing only a subset of the entire BGP table with customers, rather than the full table. This practice helps conserve resources on a customer's router by sharing only routes deemed "relevant," selected based on the service provider's business requirements and BGP traffic engineering policies.
Service providers might choose to advertise routes to direct peers, their own customers, or geographically closer routes to improve connection performance and reliability. Additionally, the customer and service provider may negotiate which routes are advertised to meet specific needs, such as routes to certain countries or regions.