OK, so having known about MPLS for a few years and actually get a provided service in my work environment as well as the fact it is on the CCIE R&S blueprint I thought I should get a much better understanding of how it works and the various terminology’s. My notes so far;

The benifits of MPLS;

  • The use of one unified network infrastructure
  • Better IP over ATM integration
  • Border Gateway Protocol (BGP)-free core
  • The peer-to-peer model for MPLS VPN
  • Optimal traffic flow
  • Traffic engineering

AT0M – accommodates many Layer-2 frames including Ethernet, Frame Relay, ATM, PPP and HDLC

Examples of AToM;

  • Ethernet over MPLS (EoMPS) – Applications include TLS and VPLS
  • ATM over MPLS – supports 2 types of transport mechanisms of ATM frames across an MPLS core: AAL5-over-MPLS & Cell-relay modes.
  • Frame Relay over MPLS