MPLS: What is it? What can it do for me?
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Overview: Multiprotocol Label Switching (MPLS) began as a way for routers to short-cut the time-consuming process of treating each packet independently, looking up the target IP address each time and in every router along the path. MPLS streamlines the packet forwarding process by introducing a label, assigned by the ingress edge router, into the packet. The beauty of MPLS is that the label itself has no meaning other than what the software gives it. Therefore, the label can be used to implement any forwarding treatment that comes to mind. This white paper will teach you what MPLS is and how it can help provide your customers with flexible networking services.