Foreword
In 1996, Cisco took a dramatic step at the IETF in requesting a BOF to discuss standardizing tag switching. Tag switching is a technology that was pioneered by Cisco to establish a common control plane across IP and ATM networks. That same year, Cisco shipped the first implementation of tag switching in software release 12.0(1)A.
In less than a decade, tag switching, or as it later became known through the standardization process, Multiprotocol Label Switching (MPLS), has become a leading technology for IP-enabled services. More than 250 service providers around the globe have delivered services based on the robust Cisco MPLS roadmap, and a growing number of enterprises are also deploying MPLS to meet internal IT demands.
Why is MPLS such ...
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