Why do Cisco MPLS TE tunnels require a link-state routing protocol?
A.
Link-state routing protocols use SPF calculations that the tunnel endpoints leverage to implement the tunnel
B.
The link-state database provides a data repository from which the tunnel endpoints can dynamically select a source ID
C.
The tunnel endpoints can use the link-state database to evaluate the entire topology and determine the best path
D.
The link state database provides segmentation by area, which improves the path-selection process
The Answer Is:
A
This question includes an explanation.
Explanation:
Cisco MPLS Traffic Engineering (TE) tunnels necessitate a link-state routing protocol like OSPF or IS-IS because these protocols use Shortest Path First (SPF) calculations. The tunnel endpoints leverage these SPF calculations to implement the tunnel, ensuring an efficient and optimized path through the network. This is essential for MPLS TE, which aims to optimize network resource utilization and improve traffic distribution across the network.
References: Cisco Community, Cisco Documentation
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