Welcome to our first session on MPLS Basics! In this video, we dive into the fundamentals of Multiprotocol Label Switching (MPLS), an essential technology for efficient network traffic management.

• Introduction and Course Outline:
  • Topics to be covered include IPv6, VPNs, MPLS, Quality of Service (QoS), Multicast, Device Management, Wireless LAN Control, AAA, URF, COP, etc.
  • Emphasis on starting with MPLS before moving to other topics.

• Basics of MPLS:
  • Definition and purpose of MPLS: A technology designed to speed up network traffic flow and make ISPs' core networks BGP-free.
  • Explanation of the difference between unicast and multicast routing.
  • MPLS labels operate between Layer 2 and Layer 3 of the OSI model, hence called a Layer 2.5 technology.

• Router Types in MPLS:
  • Provider Edge (PE) Router, Customer Edge (CE) Router, and Provider (P) Router.
  • Functions of these routers and their roles in MPLS networks.

• Routing Tables and VRF (Virtual Routing and Forwarding):
  • VRF allows for the creation of multiple routing tables within a single router to save IP addresses and isolate customer networks.
  • Concepts of Route Distinguisher (RD) and Route Target (RT) to keep routes globally unique.

• MPLS Label Switching:
  • The process of label pushing, swapping, and popping in MPLS.
  • Ingress and egress label switch routers (LSRs), and the concept of penultimate hop popping (PHP).

• Practical Example and Configuration:
  • Example network scenario demonstrating MPLS configuration and routing.
  • Use of OSPF or ISIS protocols for the internal core network.

• Historical Context and Evolution:
  • MPLS evolved from tag switching in the 1990s, which aimed to reduce the routing burden on core ISPs.
  • Mention of MPLS-related developments and contributions by Cisco.

• Interactive Q&A:
  • Participants engage with the instructor, asking questions about MPLS and related concepts.
  • Discussion on overlapping IPs, VRFs, and the scalability of routing protocols like BGP and OSPF.

• Course Resources and Further Reading:
  • References to PPT slides and additional documents provided for deeper understanding and further study.

The session emphasizes practical understanding and command over MPLS, preparing participants for real-world application and certification exams.