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Configuration Guide - MPLS

S7700 and S9700 V200R013C00

This document describes the configurations of MPLS, including Static LSP, MPLS LDP, MPLS QoS, MPLS TE, MPLS OAM, Seamless MPLS.
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(Optional) Adjusting BFD Parameters

(Optional) Adjusting BFD Parameters

Context

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.

Procedure

  • 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.

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Updated: 2019-04-08

Document ID: EDOC1100065745

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