ptp

Syntax

ptp {enable | disable}

no ptp {enable | disable}

Description

Enable updating of IEEE 1588 PTP packets.

  • The feature is disabled by default.

  • The no form of this command is the same as ptp disable.

NOTE:

This feature is available on the 2930M and only in standalone. It is disabled for stacks.

Command context

interface

Parameters

enable

When the ptp command is enabled, ports that support IEEE 1588 will operate in end-to-end transparent mode and will update the correction field of forwarded PTP packets.

disable

When the ptp command is disabled, PTP packets are forwarded unchanged.

Restrictions

  • IEEE 1588 end-to-end transparent mode cannot be enabled when there are flexible modules or transceiver ports in the system that do not support IEEE 1588. If a user attempts this, an error message like the following displays: Port A1 does not support IEEE 1588 end-to-end transparent mode.Use the command show ptp to identify the unsupported ports.

  • IEEE 1588 end-to-end transparent mode cannot be enabled on a stack. If the user attempts this, an error message like the following displays: IEEE 1588 end-to-end transparent mode cannot be enabled when stacking is enabled.

  • IEEE 1588 end-to-end transparent mode must be enabled or disabled on all ports at the same time.

  • MACsec cannot be enabled when IEEE 1588 end-to-end transparent mode is enabled.

  • IEEE 1588 end-to-end transparent mode cannot be enabled when MACsec is enabled.