I just go started learning about networking, and I am reading up on WAN technologies. For some reason I cannot understand why MPLS is more efficient than Frame Relay. From what I understand, Frame Relay can send frames to its next hop based on a DLCI located on the header. MPLS seems to do the same thing but with labels yet I have read that it is faster than frame relay. What is the difference and advantages of using labels vs DLCIs?
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