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
Engineers from companies like Cisco (Tag Switching) and IBM (ARIS) proposed a way to combine the intelligence of Layer 3 routing with the speed of Layer 2 switching. 1.MPLS History, Fundamentals & Foundational Con...
The IETF formed the MPLS working group in 1997, merging these proprietary technologies into a unified standard (RFC 3031) in 2001. 2. How MPLS Fundamentals Work Routers maintain a Label Forwarding Information Base (LFIB)
Any router capable of performing MPLS switching. How MPLS Fundamentals Work Any router capable of
The core concept of MPLS is . Instead of inspecting the IP destination address at every hop, the first router (Ingress) attaches a label to the packet. Subsequent routers simply "swap" that label and forward the packet based on its value.