Multiprotocol Label Switching (MPLS) Introduction

MPLS Architecture Overview - • MPLS is a layer 2+ switching • Developed to integrate IP and ATM • MPLS forwarding is done in the same way as in ATM switches • Packet forwarding is done based on Labels 4 2001 Cisco Systems, Inc. MPLS Concepts • Unlike IP, classification/label can be based on: Destination Unicast address Traffic Engineering VPN QoS MPLS VPN Architecture-1 – SPOTO Official Blog Apr 23, 2020 What is MPLS VPN? - Definition from Techopedia

VPN vs MPLS: Which One to Choose? VPN and MPLS each has its own pros and cons. So you’d better do a cost–benefit analysis to help you decide before deploying VPN or MPLS network. In fact, choosing VPN or MPLS depends on your business requirements, which can come down to such factors as cost, security, availability, QoS, speed , etc.

MPLS forwarding relies heavily on the IP routing table and the CEF architecture. Therefore, MPLS VPN relies on CEF because MPLS VPN depends on MPLS for successful operation.

Memoire Online - Mise en place d'une architecture VPN MPLS

• MPLS VPN backbone has to become a super-backbone for a single OSPF domain The MPLS VPN architecture extends the OSPF architecture by introducing another backbone above OSPF area 0 (superbackbone). The OSPF super-backbone is implemented with MP-BGP between the PE-routers, but is otherwise completely transparent to the OSPF routers. MPLS: Multiprotocol Label Switching - VeloCloud However, MPLS architecture struggles with the dexterity and agility required by traffic flowing to a frequently-changing variety of “off-network” (that is, off the MPLS VPN) destinations such as cloud-based or SaaS sites, or branch-to-branch traffic.