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Configuration Guide - MPLS

S7700 and S9700 V200R011C10

This document describes MPLS configurations supported by the switch, including the principle and configuration procedures of static LSPs, MPLS LDP, MPLS TE, MPLS QoS, MPLS OAM, Seamless MPLS, and MPLS common features, and provides configuration examples.
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Configuring MPLS OAM on the Ingress

Configuring MPLS OAM on the Ingress

Context

When configuring MPLS OAM on the ingress of an LSP, you can determine whether to configure a reverse tunnel.

Perform the following steps on the ingress of the LSP.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run mpls

    The MPLS view is displayed.

  3. Run mpls oam

    MPLS OAM is enabled globally.

    By default, MPLS OAM is disabled globally.

  4. Run quit

    Return to the system view.

  5. Configure MPLS OAM parameters on the ingress.

    If penultimate hop popping (PHP) is not configured when the reverse LSP is set up, specify the reverse LSP when configuring parameters on the MPLS OAM ingress.

    • If no reverse LSP is specified, run mpls oam ingress tunnel interface-number [ type { cv | ffd frequency ffd-fre } ] [ backward-lsp { lsp-name lsp-name | lsr-id rev-ingress-lsr-id tunnel-id rev-tunnel-id | [ packet-priority priority ] } ]

      NOTE:

      The parameters of the reverse LSP depend on the configuration of the egress.

    • If a reverse LSP is specified, run mpls oam ingress tunnel interface-number [ type { cv | ffd frequency ffd-fre } ] [ backward-lsp { lsp-name lsp-name | lsr-id rev-ingress-lsr-id tunnel-id rev-tunnel-id | [ packet-priority priority ] } ]

      If the reverse LSP is a static LSP or static CR-LSP, you cannot configure it in private mode.

      If lsrid ingress-lsr-id and tunnel-id tunnel-id are specified when you create a reverse LSP with the static-lsp egress lsp-name [ incoming-interface interface-type interface-number ] in-label in-label [ lsrid ingress-lsr-id tunnel-id tunnel-id ] or static-cr-lsp egress lsp-name [ incoming-interface interface-type interface-number ] in-label in-label [ lsrid ingress-lsr-id tunnel-id tunnel-id ] command, you must specify these two parameters in this step. Otherwise, you can only specify the parameter lsp-name lsp-name.
      NOTE:
      • The same compatible mode (PTN or router model) must be set on different types of devices that will be connected. Inconsistent compatible mode settings will result in connection failure.

      • If MPLS OAM auto protocol is configured, modify the configuration in the same mode as that of the remote device. Inconsistent compatible mode settings will result in connection failure.

      By default, CV packets are used for detection. The frequency at which CV packets are sent is one second. The priority of the detection packet is 0 (the lowest priority).

  6. Run mpls oam ingress enable { all | tunnel interface-number }

    OAM is enabled on the ingress.

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Updated: 2019-10-18

Document ID: EDOC1000178315

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