Configuring MPLS-TP OAM for a Bidirectional Co-routed LSP

This section describes how to configure Multiprotocol Label Switching Transport Profile (MPLS-TP) operation, administration and maintenance (OAM) to monitor a static bidirectional co-routed LSP.

Usage Scenario

MPLS-TP has been widely used on transport networks. Traditional transport networks, such as synchronous digital hierarchy (SDH) and optical transport network (OTN) networks, have set high benchmarks for reliability and maintenance, and therefore MPLS-TP must provide powerful OAM capabilities.

MPLS-TP OAM can detect faults on bidirectional LSPs and collect performance statistics. On the network shown in Figure 1, the ingress label edge router (LER) is a maintenance entity group end point (MEP), the egress LER is the remote MEP (RMEP), and transit LERs are maintenance entity group intermediate points (MIPs). MPLS-TP OAM runs on the MEPs, providing continuity check, packet loss detection, and alarm suppression functions.

Figure 1 Bidirectional LSP

Pre-configuration Tasks

Before configuring MPLS-TP OAM for a bidirectional LSP, complete the following tasks:

Configure a bidirectional LSP.
Enable packet statistics collection on a tunnel interface.

Creating an ME Instance and Binding It to a Tunnel Interface: This section describes how to create a maintenance entity (ME) instance and bind it to a tunnel interface. This is a prerequisite to configuring MPLS-TP OAM for LSP.

(Optional) Configuring CC and CV for an LSP: This section describes how to configure continuity check (CC) and connectivity verification (CV) for an LSP.

(Optional) Configuring LB for an LSP: This section describes how to configure loopback (LB) to monitor the connectivity of MPLS-TP links.

(Optional) Configuring Frame LM: This section describes how to configure frame loss measurement (LM) for MPLS-TP services.

(Optional) Configuring Frame DM: This section describes how to configure one- and two-way frame delay measurement (DM) to collect reliability statistics for MPLS-TP services.

Verifying the Configuration of MPLS-TP OAM for an LSP: After configuring Multiprotocol Label Switching Transport Profile (MPLS-TP) operation, administration and maintenance (OAM) for a label switched path (LSP), verify the configurations by querying performance statistics and fault detection information.