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Networking

Multiprotocol Label Switching

(MPLS)

A high-performance routing technique that uses labels to forward data between sites without inspecting packet contents.

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Definition

Multiprotocol Label Switching (MPLS) is a routing technique used in carrier networks to forward data between enterprise sites using short path labels rather than full network addresses. MPLS provides predictable latency, guaranteed bandwidth, and traffic engineering capabilities, which made it the standard for multi-site enterprise WANs for over two decades. While SD-WAN has reduced MPLS dependency for many use cases, MPLS remains relevant for latency-sensitive applications and regulated industries that require provider-managed isolation.

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