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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

Context

BFD parameters include the minimum intervals for sending and receiving BFD packets, and local BFD detection multiplier. The parameters affect BFD session setup.

You can adjust the local detection time according to the network situation. On an unstable link, if a small detection time is used, a BFD session may flap. You can increase the detection time of the BFD session. If the MPU has the ES0D00FSUA00 card installed or the MPU is EH1D2SRUDC00/EH1D2SRUDC01, you are advised to use the interval of 20 ms, 50 ms, 100 ms, 300 ms, 500 ms, or 1000 ms.

NOTE:

Actual interval for the local device to send BFD packets = MAX {locally configured interval for sending BFD packets, remotely configured interval for receiving BFD packets}

Actual interval for the local device to receive BFD packets = MAX {remotely configured interval for sending BFD packets, locally configured interval for receiving BFD packets}

Local detection time = Actual interval for receiving BFD packets x Remotely configured BFD detection multiplier

Perform the following steps on the ingress node.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run bfd

    The BFD view is displayed.

  3. Run mpls ping interval interval

    The interval for sending LSP ping packets is adjusted.

    By default, the interval at which LSP ping packets are sent in a dynamic BFD session is 60 seconds.

  4. Run quit

    Exit from the BFD view.

  5. Run mpls

    The MPLS view is displayed.

  6. Run mpls bfd { min-tx-interval tx-interval | min-rx-interval rx-interval | detect-multiplier multiplier }*

    BFD time parameters are set.

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Updated: 2019-10-18

Document ID: EDOC1000178315

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