Configuring MPLS LDP

Multiprotocol Label Switching (MPLS) Label Distribution Protocol (LDP) defines the messages used during label distribution and the processing of the messages used to negotiate parameters between label switching routers (LSRs) and allocate labels to set up a label switched path (LSP).

Configuring Basic MPLS LDP Functions: You must configure basic MPLS LDP functions to build an MPLS network.

Configuring LDP Extension for Inter-Area LSP: Configuring LDP extension for inter-area LSP enables LDP to search for routes based on the longest match rule to establish inter-area LDP LSPs.

Configuring LDP GR: This section describes how to configure LDP GR. LDP GR implements the uninterrupted forwarding during a master/slave switchover or the protocol restart, which minimizes the protocol flapping on the control plane.

Configuring the Non-Label Public Network Route to Be Iterated to the LSP: Iteration of the non-labeled public network route to the LSP is mainly applied to the MPLS L3VPN in the networking of carrier's carrier. In this manner, the Internet traffic of the second carrier can be forwarded on the MPLS backbone network of the first carrier.

Configuring LDP Security Features: LDP security features such as MD5 authentication, and keychain authentication can be configured to meet high network security requirements. By default, no authentication is configured for LDP. Configuring security authentication is recommended to ensure system security.

Configuring Synchronization Between LDP and Static Routes: By configuring synchronization between LDP and static routes, you can switch traffic from a faulty primary link to the backup link by suppressing the activation of static routes. You can also delay traffic switchback to synchronize LDP and static routes.

Configuring Synchronization Between LDP and IGP: This section describes how to configure LDP and IGP synchronization. LDP and IGP synchronization can delay a route switchback by suppressing the setup of an IGP neighbor relationship until an LDP session is established.