Typically router sends only the best routes and that behavior hides alternatives.
Enabling sending of additional paths (RFC 7911) allows IRP to automatically configure complete list of routes for partial routing providers and internet exchanges peering partners.
Listing 2.54: Cisco: Configure BGP Additional Paths
router bgp 65500 neighbor 10.1.1.2 remote-as 65500 ! address-family ipv4 bgp additional-paths select all neighbor 10.1.1.2 activate neighbor 10.1.1.2 additional-paths send neighbor 10.1.1.2 advertise additional-paths all exit-address-family
Listing 2.55: Juniper: Configure BGP Additional Paths
[edit protocols bgp group group-name family family]
add-path {
send {
path-count 20;
}
}