EIBGP multipath ECMP for defined prefixes

In the existing BGP multipath, EBGP routes take priority over IBGP routes because both have different metrics. After you enable EIBGP multipath and there is equal load sharing between EBGP and IBGP routes, Junos OS initiates ECMP using a blend of both EBGP and IBGP. Feature-specific policies specify prefixes that support EIBGP multipath. You can configure the policy to choose the prefixes based on any match condition. To enable EIBGP multipath, configure the allow-external-internal option at the [edit protocols bgp multipath] or [edit logical-systems logical-system-name protocols bgp multipath] hierarchy level.