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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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(Optional) Adjusting BFD Parameters

(Optional) Adjusting BFD Parameters


BFD parameters are adjusted on the ingress node of a TE tunnel using either of the following modes:

Perform the following configurations on the two RSVP neighboring nodes with a Layer 2 device exists between them.


  • Adjust global BFD parameters globally.
    1. Run system-view

      The system view is displayed.

    2. Run mpls

      The MPLS view is displayed.

    3. Run mpls rsvp-te bfd all-interfaces { min-tx-interval tx-interval | min-rx-interval rx-interval | detect-multiplier multiplier } *

      BFD parameters are set globally.

      Parameters are described as follows:
      • tx-interval indicates the Desired Min Tx Interval (DMTI), that is, the desired minimum interval for the local end sending BFD control packets.

      • rx-interval indicates the Required Min Rx Interval (RMRI), that is, the supported minimum interval for the local end receiving BFD control packets.

      • multiplier indicates the BFD detection multiplier.

      BFD detection parameters that take effect on the local node may be different from the configured parameters:
      • Actual local sending interval = MAX { Locally-configured DMTI, Remotely-configured RMRI }

      • Actual local receiving interval = MAX { Remotely-configured DMTI, Locally-configured RMRI }

      • Actual local detection interval = Actual local receiving interval x Configured remote detection multiplier

  • Adjust BFD parameters on an RSVP interface.
    1. Run system-view

      The system view is displayed.

    2. Run interface interface-type interface-number

      The view of the RSVP-TE-enabled interface is displayed.

    3. (Optional) On an Ethernet interface, run undo portswitch

      The interface is switched to Layer 3 mode.

      By default, an Ethernet interface works in Layer 2 mode.

    4. Run mpls rsvp-te bfd { min-tx-interval tx-interval | min-rx-interval rx-interval | detect-multiplier multiplier } *

      BFD parameters on the RSVP interface are adjusted.

Updated: 2019-10-18

Document ID: EDOC1000178315

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