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MPLS Label Distribution Protocol (LDP)
Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP) enables peer label switch
routers (LSRs) in an MPLS network to exchange label binding information for supporting hop-by-hop
forwarding in an MPLS network. This module explains the concepts related to MPLS LDP and describes
how to configure MPLS LDP in a network.
• Finding Feature Information, page 1
• Prerequisites for MPLS LDP, page 1
• Information About MPLS LDP, page 1
• How to Configure MPLS LDP, page 5
• MPLS LDP Configuration Examples, page 21
• Additional References, page 25
• Feature Information for MPLS Label Distribution Protocol, page 26
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest feature
information and caveats, see the release notes for your platform and software release. To find information
about the features documented in this module, and to see a list of the releases in which each feature is
supported, see the Feature Information Table at the end of this document.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support.
To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Prerequisites for MPLS LDP
Label switching on a router requires that Cisco Express Forwarding (CEF) be enabled on that router.
Information About MPLS LDP
• Introduction to MPLS LDP, page 2
• MPLS LDP Functional Overview, page 2
• LDP and TDP Support, page 2
• Introduction to LDP Sessions, page 3
• Introduction to LDP Label Bindings Label Spaces and LDP Identifiers, page 4
MPLS LDP Configuration Guide, Cisco IOS Release 12.4
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