November 2006
Beginner
672 pages
15h 30m
English
Content preview from MPLS Fundamentals
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Label Forwarding Instance Base
The LFIB is the table used to forward labeled packets. It is populated with the incoming and outgoing labels for the LSPs. The incoming label is the label from the local binding on the particular LSR. The outgoing label is the label from the remote binding chosen by the LSR from all possible remote bindings. All these remote bindings are found in the LIB. The LFIB chooses only one of the possible outgoing labels from all the possible remote bindings in the LIB and installs it in the LFIB. The remote label chosen depends on which path is the best path found in the routing table.
In the example of IPv4-over-MPLS, the label is bound to an IPv4 prefix. However, the LFIB can be populated with labels that LDP does not ...
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