ldp_basic.txt

实现了MPLS中的标签分发协议（LDP 3036 )的基本功能

-LDP is a control driven MPLS signaling protocol which means labels are
 distributed according to changes in L3 topology, not in response to data flows.
-LDP only assignes and receives mappings which are in turn fed to the MPLS
 forwarding plane.  LDP does not participate in the actual labelling of
 packets.  Labeling of packets is part of the MPLS forwarding plane.
 See 'mpls-linux' for an implementation of MPLS forwarding.
-LDP has a few modes of operation:
 Distribution Mode - Unsolicited vs On Demand
 Control Mode - Independent vs Ordered
 Repair Mode - Local vs Global
-LDP genrates or requests labels for each FEC.  A FEC is defined as an entry
 in the L3 forwarding table.