Configuring Time Attributes For Ptp Packets - Huawei Quidway S9300 Configuration Manual

Quidway S9300 Terabit Routing Switch
Configuration Guide - Device Management
l Delay mode:
l PDelay mode:
Step 4 Run:
ptp enable
1588v2 is enabled on the interface.
Step 5 (Optional) Run:
ptp announce-drop enable
The interface of the 1588v2 device is configured to discard the received Announce packets.
Step 6 (Optional) Run:
ptp asymmetry-correction { positive | negative } asymmetry-correction
The asymmetric correction time for sending 1588v2 packets on the interface is set.
By default, the asymmetric correction time for sending 1588v2 packets is not set.
Step 7 (Optional) Run:
ptp clock-step { one-step | two-step }
The timestamping mode of the synchronization packets sending by the 1588v2 port is set.
By default, the mode in which 1588v2 packets are timestamped is one-step.
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12.3.4 Configuring Time Attributes for PTP Packets

Procedure
l
Issue 03 (2011-12-29)
A delay request-response mechanism, in which information about the clock and time is
calculated according to the delay of the entire link between the master clock and slave clock.
A peer delay mechanism, in which information about the time and clock is calculated
according to the delay of each segment of the link between the master clock and slave clock.
NOTE
Different delay measurement mechanisms cannot replace each other. Therefore, delay measurement
mechanisms configured on 1588v2 interfaces on the same link segment must be identical.
NOTE
Announce packets can ensure the 1588v2 clock synchronization between devices. If an interface discards
Announce packets, the device where the interface resides cannot receive clock synchronization information
from other 1588v2 devices. Usually, this command is configured on the interface at the user side.
Configuring time attributes for Announce packets
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 announce-interval announce-interval
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