Explain the end-to-end working of MPLS.

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Accepted Answer

MPLS enables efficient data forwarding through label-based routing, enhancing speed and reliability in networks.

MPLS stands for Multi-Protocol Label Switching, which directs data from one node to the next based on short path labels rather than long network addresses.
Labels are assigned to packets at the ingress router, allowing for faster processing as routers only need to look at the label instead of the entire IP header.
MPLS supports multiple protocols, including IP, ATM, and Frame Relay, making it versatile for various network types.
Traffic engineering is a key feature of MPLS, allowing for optimized bandwidth usage and reduced congestion by directing traffic along predetermined paths.
Example: In a service provider network, MPLS can be used to create Virtual Private Networks (VPNs) for secure communication between different sites.