What is
LDP (Label Distribution Protocol)?
LDP (Label Distribution Protocol)
is the reference distribution protocol which tends to become
the most used in MPLS standard. This protocol takes account of unicast and
multicast addresses. Routing is explicit and is managed by the output nodes.
Exchanges are carried out under the TCP to ensure acceptable quality.
The LDP includes the
following messages:
• Message Discovery (DISCOVERY
MESSAGE), and maintains that announces the presence of an LSR in the network.
• Session Message (MESSAGE SESSION) that establishes,
maintains and terminates sessions between LDP ports.
• Warning Message (ADVERTISEMENT MESSAGE), which creates,
maintains and destroys the correspondence between the references and the FEC.
• Notification Message (MESSAGE NOTIFICATION), which gives information error
or problem.
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