1.mpls History, Fundamentals & Foundational Con... Apr 2026

Allowing service providers to securely carry traffic for multiple customers over a single physical backbone.

Routers maintain a Label Forwarding Information Base (LFIB). When a packet arrives, the router looks at the label, finds the outgoing interface and the new label in the LFIB, and sends it on its way. 3. Foundational Components 1.MPLS History, Fundamentals & Foundational Con...

ATM (Asynchronous Transfer Mode) was fast but used fixed-size cells that were inefficient for IP traffic ("cell tax"). Standard IP routing was flexible but slow. Allowing service providers to securely carry traffic for