Configure ptp-1588 timing for circuit pack/port

Procedure 8-2: Configure ptp-1588 timing for circuit pack/port

Overview

Use this procedure to provision ptp-1588 timing for a VLNC6x circuit pack or a d2-(1-4) port on a VLNC42/42B circuit pack. The VLNC42/42B circuit pack only supports ptp-1588 timing (slave mode only) on at most two d2 interfaces or a LAG interface consisting of two d2 interfaces.

The IEEE 1588 protocol distributes time and frequency via Ethernet with expected endpoint time-alignment time precision measured in nanoseconds. The protocol is designed to synchronize real-time clocks on the nodes of a distributed system that communicate using a network.

The protocol uses a master/slave relationship to distribute timestamps from one device to the others. The protocol traffic is an Ethernet frame with a special Ethertype field to indicate 1588.

Step

If provisioning a ...	Then...
VLNC6x circuit pack,	Continue with the next step.
VLNC42/42B port,	Proceed to Step 5.

From the Navigation menu, select Timing → System Timing → Summary and verify that the system timing parameters are provisioned correctly.

Result:

The System Timing Summary screen appears.

If required, select Timing → System Timing → Configuration. Enter the required System Timing Source and Differential Timestamp Frequency parameters, then click Submit.

Result:

The System Timing Configuration screen appears.

From the Navigation menu, select Timing → ptp-1588 Timing → ptp-1588 Protocol Configuration.

Result:

The ptp-1588 Protocol Configuration screen appears.

Enter the required parameters, then click Submit.

Parameters include:

State: Enables or disables the IEEE 1588 Precision Timing Protocol on the system.
Slot/Port (VLNC42x circuit pack only): Specifies the d2 interface port or d2 LAG AID.
Mode: Enables/disables the master or slave mode.

The master mode must be enabled on the system that has access to a high-precision clock. The 1588 component derives timing from the provisioned system clock.

The slave mode should be used on a remote system that does not have access to high precision clock source.

The VLNC42/42B circuit packs support the master and slave modes for OAM 1–way delay measurement timing.
VLAN ID: Specifies the VLAN id over which the 1588 protocols are transmitted.
Primary Port (VLNC6x circuit pack only): Specifies the primary port over which the 1588 protocols are transmitted and received.
Backup Port (VLNC6x circuit pack only): Specifies the backup port over which the 1588 protocols are transmitted and received.
Priority1 (VLNC6x and VLNC42B circuit pack only): Specifies the priority1 of the 1588 protocol. It is used only in the Master mode while sending the 1588 protocol message. (Not supported on VLNC42 circuit packs.)
Priority2 (VLNC6x and VLNC42B circuit pack only): Specifies the priority2 of the 1588 protocol. It is used only in the Master mode while sending the 1588 protocol message. (Not supported on VLNC42 circuit packs.)
Domain: Specifies the PTP domain value of the 1588 protocol.
Log Mean Sync Interval (VLNC6x and VLNC42B circuit pack only): Specifies the Log Mean Sync Interval of the 1588 protocol. (Not supported on VLNC42 circuit packs.)
Log Min Mean Delay Interval: Specifies the Log Minimum Mean Delay Interval of the 1588 protocol.
Log Mean Announce Interval (VLNC6x and VLNC42B circuit pack only): Specifies the Log Mean Announce Interval of the 1588 protocol. (Not supported on VLNC42 circuit packs.)
Announce Receipt Timeout: Specifies the Announce Receipt Timeout Interval of the 1588 protocol.
Time Switch Mode (VLNC6x circuit pack only): Specifies the switch over of master clock selection is controlled by 1588 protocol’s master clock selection algorithm or by the system.
Multicast MAC Address: Specifies the Multicast MAC address on which to send/receive the 1588 protocol messages.

From the Navigation menu, select Timing → ptp-1588 Timing → ptp-1588 Protocol Summary and verify that the required parameters were provisioned correctly.

Result:

The ptp-1588 Protocol Summary screen appears.

End of steps