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NE40E V800R010C00 Configuration Guide - MPLS 01

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(Optional) Adjusting BFD Parameters

(Optional) Adjusting BFD Parameters

BFD parameters are adjusted on the ingress of a tunnel either globally or on a tunnel interface.

Context

Perform either of the following operations:

NOTE:
  • Effective local interval at which BFD packets are sent = MAX { Configured local interval at which BFD packets are sent, Configured remote interval at which BFD packets are received }
  • Effective local interval at which BFD packets are received = MAX { Configured remote interval at which BFD packets are sent, Configured local interval at which BFD packets are received }
  • Effective local detection interval = Effective local interval at which BFD packets are received x Configured remote detection multiplier

On the egress of the TE tunnel enabled with the capability of passively creating BFD sessions, the default values of the receiving interval, the sending interval, and the detection multiplier cannot be adjusted. The default values of these three parameters are the configured minimum values on the ingress. Therefore, the BFD detection interval on the ingress and that on the egress of a TE tunnel are as follows:

  • Effective detection interval on the ingress = Configured interval at which BFD packets are received on the ingress x 3

  • Effective detection interval on the egress = Configured local interval at which BFD packets are sent on the ingress x Configured detection multiplier on the ingress

Procedure

  • Adjust global BFD parameters on the ingress of a TE tunnel.
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      mpls

      The MPLS view is displayed.

    3. Run:

      mpls te bfd { min-tx-interval tx-interval | min-rx-interval tx-interval | detect-multiplier multiplier }*

      BFD time parameters are adjusted globally.

    4. Run:

      commit

      The configuration is committed.

  • Adjust BFD parameters on the tunnel interface.
    1. Run:

      system-view

      The system view is displayed.

    2. Run:

      interface tunnel interface-number

      The TE tunnel interface view is displayed.

    3. Run:

      mpls te bfd { min-tx-interval tx-interval | min-rx-interval rx-interval | detect-multiplier multiplier }*

      BFD time parameters are adjusted.

    4. Run:

      commit

      The configuration is committed.

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Updated: 2018-07-12

Document ID: EDOC1100028530

Views: 101033

Downloads: 336

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