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Multiprotocol Label Switching (MPLS)
is a labeling technique used to increase the speed of traffic flow. Each packet
is tagged with the path sequence to the destination. This saves time by not
have to do a lookup of the routing table. In another word packet switching is
done at layer 2 instead of layer 3. MPLS support multiple protocols such as IP,
ATM, and frame relay. See also MPLS/TE.
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