Reduction of BGP Alternate Paths from Inter-Exchange Points
Cisco Systems
Cisco Systems
In this document we present a mechanism that enhances the "IGP-metric based MED" approach so that load balancing is maintained while limiting the number of BGP alternate paths carried in a network. The mechanism involves the use of a "scale factor" to scale down the IGP metrics for the purpose of setting MEDs, and is thus termed "scaled IGP-metric based MED".