Before configuring an RSVP LSP in your network, you first apply a baseline configuration to all of the routers. Which three configuration elements are minimally required in the baseline? (Choose three.)
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A. B. C. D. E.BDE
When setting up an RSVP LSP in your network, a baseline configuration is necessary to ensure that all routers in the network are ready to support RSVP signaling and LSP setup. The three minimally required configuration elements in the baseline are as follows:
Enabling MPLS on loopback interfaces: The loopback interface is an important interface in the router as it provides a stable IP address for the router, independent of physical interfaces. Enabling MPLS on the loopback interface ensures that the router is ready to participate in MPLS signaling and LSP setup.
Enabling MPLS on transit interfaces: Transit interfaces are interfaces through which labeled packets pass between routers in an MPLS network. Enabling MPLS on transit interfaces is necessary to ensure that labeled packets can be forwarded across the network.
Enabling RSVP for the appropriate interfaces: RSVP (Resource Reservation Protocol) is used to set up LSPs in an MPLS network. Enabling RSVP on the appropriate interfaces is necessary to allow routers to exchange RSVP signaling messages and set up LSPs.
Therefore, options A, B, and E are the correct answers as they include enabling MPLS on the loopback and transit interfaces and RSVP on appropriate interfaces. Options C and D are incorrect as they only cover the MPLS protocol and not RSVP, which is necessary for LSP setup.