configure network-clock gptp ports sync

configure network-clock gptp ports [port_list {only} | all] sync [initial-interval log_2_interval receipt-timeout timeout_count]


Configures gPTP synchronization parameters on the specified ports.

Syntax Description

port_list Specifies one or more of the switch's physical ports.
only Apply change only to specified port, even if port is master of a load sharing group.
all Specifies all of the switch's physical ports.
log_2_interval The interval between Sync messages used by the switch for the port when the port is initialized or when the switch receives a message interval request TLV with timeSyncInterval value of 126. This value is in log2 seconds. The valid range of values is -3 (2-3 = 0.125 seconds) to 17 (217 = 131072 seconds).
timeout_count On a gPTP slave port, the number of sync intervals to wait without receiving a Sync message before assuming the adjacent master port is no longer sending Sync messages.


  • log_2_interval = -3 (0.125 second; 802.1AS
  • timeout_count = 3 (802.1AS

Usage Guidelines

Synchronization distributes the time from the grandmaster to all other time-aware systems in the networks.

initial-interval corresponds to 802.1AS parameter initialLogSyncInterval.

receipt-timeout corresponds to 802.1AS parameter syncReceiptTimeout.


configure network-clock gptp ports 1-2 sync initial-interval -1
configure network-clock gptp ports all sync receipt-timeout 5 


This command was first available in ExtremeXOS 15.3.

Platform Availability

This command is available on Summit X450-G2, X460-G2, and X670-G2 switches if the AVB feature pack license is installed on the switch.