A service provider creates a network design that runs MPLS in its WAN backbone using OSPF as the IGP routing protocol. What would be two effects of additionally implementing MPLS-TE? (Choose two.)
A.
MPLS-TE is required to reroute traffic within less than 1 second in case of a link failure inside the backbone.
B.
MPLS-TE is required to route different MPLS QoS service classes through different paths.
C.
MPLS-TE and OSPF cannot be used together inside one MPLS network.
D.
MPLS-TE cannot use OSPF for the traffic path calculation.
E.
MPLS-TE is required to create backup paths independently from the IGP.
E is wrong in my opinion, MPLS-TE control-plane relied on RSVP and RSVP itself even it doesn't require IGP, but MPLS-TE does, since when you want to create LSP path for TE or declaring source address for TE (lo0) you need ISIS and OSPF for that.
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zterilized
2 years, 10 months agoJCGO
2 years, 11 months ago