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NE20E-S V800R010C10SPC500 Configuration Guide - MPLS 01

This is NE20E-S V800R010C10SPC500 Configuration Guide - MPLS
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(Optional) Setting Timers for mLDP P2MP FRR Link Protection

(Optional) Setting Timers for mLDP P2MP FRR Link Protection

Timers can be set for mLDP P2MP FRR link protection, which helps properly perform a traffic switchover.

Context

The following timers can be set for mLDP P2MP FRR link protection:
  • Delay timer for deleting mLDP P2MP LSP labels: This timer delays in deleting labels for a faulty mLDP P2MP LSP, preventing local link flapping from spreading globally.

  • Timer for a downstream node to wait for an MBB Notification message sent by an upstream node: Within this timer period, a downstream node confirms that a branch LSP is successfully established only after receiving an MBB Notification message replied by an upstream node during MBB LSP establishment. This timer sets the period of time for the downstream node to wait for an MBB Notification message.

  • Timer for delaying an MBB LSP switchover: After an MBB LSP is established, LSP switching is delayed to ensure the proper traffic switching on the forwarding and control planes.

Default timer values are recommended.

Procedure

  • Configure a delay timer for deleting mLDP P2MP LSP labels.
    1. Run system-view

      The system view is displayed.

    2. Run mpls ldp

      The MPLS-LDP view is displayed.

    3. Run mldp p2mp

      mLDP P2MP is enabled globally.

    4. Run mldp label-withdraw-delay delay-time-value

      A delay timer is set for deleting mLDP P2MP LSP labels.

    5. Run commit

      The configuration is committed.

  • Configure a timer for a downstream node to wait for an MBB Notification message sent by an upstream node.
    1. Run system-view

      The system view is displayed.

    2. Run mpls ldp

      The MPLS-LDP view is displayed.

    3. Run mldp p2mp

      mLDP P2MP is enabled globally.

    4. Run mldp make-before-break

      The MBB capability is configured.

    5. Run mldp make-before-break timer wait-ack wait-ack-time-value

      A timer is set for a downstream node to wait for an MBB Notification message sent by an upstream node.

    6. Run commit

      The configuration is committed.

  • Configure a timer for delaying an MBB LSP switchover.
    1. Run system-view

      The system view is displayed.

    2. Run mpls ldp

      The MPLS-LDP view is displayed.

    3. Run mldp p2mp

      mLDP P2MP is enabled globally.

    4. Run mldp make-before-break

      The MBB capability is configured.

    5. Run mldp make-before-break timer switch-delay switch-delay-time-value

      A timer for delaying an MBB LSP switchover is configured.

    6. Run commit

      The configuration is committed.

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Updated: 2019-01-03

Document ID: EDOC1100055103

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