MPLS Operation
The implementation of MPLS for data forwarding involves the following four steps:
1. | MPLS label assignment (per LSR)
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2. | MPLS LDP or TDP session establishment (between LSRs/ELSRs)
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3. | MPLS label distribution (using a label distribution protocol)
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4. | MPLS label retention
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MPLS operation typically involves adjacent LSR’s forming an LDP session, assigning local labels to destination prefixes and exchanging these labels over established LDP sessions. Upon completion of label exchange between adjacent LSRs, the control and data structures of MPLS, namely FIB, LIB, and LFIB, are populated, and the router is ready to forward data plane information based on label values.
MPLS Label Assignment
A label is assigned to IP networks reachable ...
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