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Configuration Guide - Device Management

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of IP multicast, including IP multicast basics, IGMP, MLD, PIM (IPv4), PIM (IPv6), MSDP, multicast VPN, multicast route management (IPv4), multicast route management (IPv6), IGMP snooping, MLD snooping, static multicast MAC address, multicast VLAN, multicast network management.

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Enabling 1588v2 on an Interface

Enabling 1588v2 on an Interface


1588v2 takes effect after you configure it in the system and interface views. That is, after enabling 1588v2 in the system view, you still need to enable it in the interface view and set 1588v2 parameters in the interface view. The parameters include the link delay measurement mechanism, asymmetric delay correction value, and timestamping mode.

Perform the following steps on each 1588v2 device.


  1. Run system-view

    The system view is displayed.

  2. Run interface interface-type interface-number

    The interface view is displayed.

  3. (Optional) Run ptp delay-mechanism { delay | pdelay }

    A delay measurement mechanism is configured for the switch.

    By default, the delay measurement mechanism of a switch is Delay.

    Two interfaces on both ends of a link must use the same delay measurement mechanism.

  4. Run ptp enable

    1588v2 is enabled on the interface.

    By default, 1588v2 is disabled on an interface.

  5. (Optional) Run ptp asymmetry-correction { negative negative-asymmetry-correction-value | positive positive-asymmetry-correction-value }

    The asymmetrical delay correction value is set for 1588v2 messages to be sent by the interface.

    By default, the asymmetrical delay correction value is not set for 1588v2 messages to be sent.

  6. (Optional) Run ptp clock-step { one-step | two-step }

    The timestamping mode is specified for 1588v2 messages.

    By default, the timestamping mode for 1588v2 messages is one-step.

  7. (Optional) Run ptp adjust correction-field value

    The adjustment value of the correction field is configured on the interface so that the local device can interwork with the device that does not process the correction field. By default, the adjustment value of the correction field on an interface is 0 ns.

    • Only the CE6865EI and CE8850-64CQ-EI support this command.
    • This command applies only to the scenario where the switch needs to interconnect with the device that does not process the correction field. If the interconnected device can process the correction field, run the undo ptp adjust correction-field command to restore the default adjustment value of the correction field on the interconnected interface.
    • This command can be run only on the 1588v2 interface that has the Delay mechanism configured. After this command is run on a 1588v2 interface that has the Pdelay mechanism configured, the configuration does not take effect.

  8. Run commit

    The configuration is committed.

Updated: 2020-01-07

Document ID: EDOC1100075362

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