A service provider wants to start using all of their LSPs for internal traffic and not just their MPLS VPNs. Any
solution must ensure that existing VPNs and routing policies will continue to function properly.
Which MPLS traffic engineering parameter would accomplish this task?
A.
bgp
B.
bgp-igp-both-ribs
C.
bgp-igp
D.
mpls-forwarding
Explanation:
Using LSPs for Forwarding in Virtual Private Networks
VPNs require that routes remain in the inet.3 routing table to function properly. For VPNs, configure the bgpigp-both-ribs option of the traffic-engineering statement to cause BGP and the IGPs to use LSPs for forwarding
traffic destined for egress routers.
Incorrect Answers:
C: You can configure BGP and the IGPs to use LSPs for forwarding traffic destined for egress routers by
including the bgp-igp option for the traffic-engineering statement.
https://www.juniper.net/documentation/en_US/junos15.1/topics/usage-guidelines/mpls-configuring-traffic-engineering-for-lsps.html