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CLI-based Configuration Guide - Reliability

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides guidance for configuring reliability services, including interface backup, BFD, VRRP, and EFM.
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Configuring VLAN-based Two-way Frame Delay Measurement

Configuring VLAN-based Two-way Frame Delay Measurement

When CFM is enabled and clocks of the MEPs at both ends of a link are not synchronized, deploy two-way frame delay measurement to measure the network delay time on a bidirectional link between MEPs.

Context

VLAN-based two-way frame delay measurement can be implemented in on-demand or proactive mode. On-demand measurement is initiated manually and calculates the two-way frame delay at a time or periodically during diagnosis. Proactive measurement calculates the two-way frame delay continuously.
  • To measure the two-way frame delay in a VLAN at a time or periodically, use the on-demand mode.

  • To measure the two-way frame delay in a VLAN continuously, use the proactive mode.

Procedure

  1. Perform basic CFM configurations on the MEP and RMEP.

    1. Run system-view

      The system view is displayed.

    2. Run vlan vlan-id

      A VLAN is created and the VLAN view is displayed.

      By default, all interfaces belong to the default VLAN, that is, VLAN 1.

    3. Run port interface-type { interface-number1 [ to interface-number2 ] } &<1-10>

      The default VLAN is configured for an interface and the interface is added to the default VLAN.

      By default, VLAN 1 is the default VLAN of all interfaces.

    4. Run cfm enable (system view)

      CFM is enabled globally.

      By default, CFM is disabled globally.

    5. Run cfm md md-name

      The MD view is displayed.

    6. Run ma ma-name

      The MA view is displayed.

    7. Run map vlan vlan-id

      The MA is bound to a VLAN.

      By default, an MA is not associated with any VLAN.

    8. Run mep mep-id mep-id interface interface-type interface-number [ vlan vlan-id | pe-vid pe-vid ce-vid ce-vid ] { inward | outward }

      A MEP is configured.

    9. Run mep ccm-send [ mep-id mep-id ] enable

      The MEP is enabled to send CCMs.

      By default, a MEP is disabled from sending CCMs.

    10. Run remote-mep mep-id mep-id [ mac mac-address ]

      The RMEP is configured.

      NOTE:

      When this command is configured on the transmit device, the mac mac-address command must be configured. Otherwise, on-demand two-way frame delay measurement cannot be configured, and proactive two-way frame delay measurement can be configured but does not take effect.

    11. Run remote-mep ccm-receive [ mep-id mep-id ] enable

      The MEP is enabled to receive CCMs from the RMEP.

      By default, a MEP is disabled from receiving CCMs from an RMEP.

    12. Run test-id test-id mep mep-id remote-mep mep-id [ 8021p 8021p-value ] [ description description ]

      A test instance is configured.

      By default, no test instance is configured in an MA.

    NOTE:
    • The MEP ID on the transmit device must be the same as the RMEP ID on the receive device.
    • The RMEP ID on the transmit device must be the same as the MEP ID on the receive device.

  2. On the receive device configured with two-way frame delay measurement, run: delay-measure two-way receive test-id test-id

    The RMEP is enabled to receive DMMs.

    By default, the REMP is not enabled to receive DMMs in an MA.

  3. Configure two-way frame delay measurement on the initiator.

    NOTE:

    When two-way delay measurement is configured and the MEP and RMEP are the same in the same MA, if multiple test IDs are configured, only the test instance with the highest priority is detected.

    • Configure on-demand two-way frame delay measurement.

      Run delay-measure two-way send test-id test-id interval { 1000 | 10000 } count count [ packet-size packet-size ]

      VLAN-based on-demand two-way frame delay measurement is configured.

      By default, on-demand two-way frame delay measurement is not configured in an MA.

    • Configure proactive two-way frame delay measurement.

      Run delay-measure two-way continual send test-id test-id interval { 1000 | 10000 | 15000 | 30000 } [ packet-size packet-size ]

      VLAN-based proactive two-way frame delay measurement is configured.

      By default, proactive two-way frame delay measurement is not configured in an MA.

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Updated: 2019-03-06

Document ID: EDOC1100069338

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