Meaning The output displays information about the number of ports created according to the
configuration and their current status. The name of the interface configured for PTP and
the number of times a stateful port transitioned from the slave to the master state and
vice versa is displayed. For more information about the run show ptp port operational
command, see show ptp port in the CLI Explorer.
Verifying PTP Statistics
Purpose Verify the statistical details of the PTP configuration.
Action In operational mode, enter the run show ptp statistics command to display the statistical
information regarding the configured PTP clocks.
Meaning The output displays brief or detailed information about the operation of configured PTP
clocks. Statistical parameters include information such as the total number of PTP
packets transmitted or received by a master or slave interface and the number of various
messages (such as announce and synchronization messages) that are sent between a
master and a slave. For more information about the show ptp statistics operational
command, see show ptp statistics in the CLI Explorer.
Related
Documentation
PTP over Ethernet on ACX Series Routers Overview on page 238•
• Guidelines for Configuring PTP over Ethernet on page 240
• Configuring PTP Multicast Master and Slave Ports for Ethernet Encapsulation on
page 274
• Configuring PTP Dynamic Ports for Ethernet Encapsulation on page 280
Hybrid Mode on ACX Series Routers Overview
The combined operation of Synchronous Ethernet and Precision Time Protocol (PTP) is
also known as hybrid mode. The following sections explain hybrid mode in detail:
•
Hybrid Mode Overview on page 288
•
Supporting Platforms on page 289
Hybrid Mode Overview
In hybrid mode, the synchronous Ethernet equipment clock (EEC) on the Modular Port
Concentrator (MPC) derives the frequency from Synchronous Ethernet and the phase
and time of day from PTP. Time synchronization includes both phase synchronization
and frequency synchronization.
Synchronous Ethernet is a physical layer–based technology that functions regardless of
the network load. Synchronous Ethernet supports hop-by-hop frequency transfer, where
all interfaces on the trail must support Synchronous Ethernet. PTP (also known as IEEE
1588v2) synchronizes clocks between nodes in a network, thereby enabling the distribution
Copyright © 2017, Juniper Networks, Inc.288
ACX Series Universal Access Router Configuration Guide
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