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What is FEC in MPLS?

Learn what Forwarding Equivalence Class (FEC) is and how it works with Multiprotocol Label Switching (MPLS).

What is FEC in MPLS?

MPLS uses the concept of packet labeling. As soon as the packet enters a network, it is assigned to a specific Forwarding Equivalence Class (FEC) which is done by appending a label to the packet. This eliminates the need for a router to perform header analysis since each router contains a table indicating how specific FEC type packets are to be handled.

This was last published in August 2007

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