Precision Time Protocol Configuration - Lenovo RackSwitch G8332 Command Reference Manual

Precision Time Protocol Configuration

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G8332 Command Reference for ENOS 8.4
Precision Time Protocol (PTP) allows high accuracy clock synchronization between
a networked master clock and compliant network hosts. The Lenovo RackSwitch
G8332 supports two PTP modes:
 Ordinary slave clock ‐ Synchronizes the Real Time Clock (RTC) with PTP master
clocks detected on the network.
 End‐to‐End transparent clock ‐ Allows PTP traffic to pass through without
affecting the RTC, while updating the correction fields for event packets.
Table 380.
Precision Time Protocol Configuration Options
Command Syntax and Usage
[no] ptp ordinary enable
Enables or disables PTP ordinary slave clock mode. In this mode, if a PTP
master clock is detected on the network, the RTC is synchronized with it. If no
master clock is detected, the RTC is not affected.
The default setting is disabled.
Note: Enabling PTP ordinary slave clock mode disables NTP settings and
system time clock manual settings.
Command mode: Global configuration
[no] ptp transparent enable
Enables or disables PTP End‐to‐End transparent clock mode. In this mode,
incoming PTP packets are forwarded based on routing rules currently in place
for the PTP domain's multicast address (within the 224.0.1.129 ‐ 224.0.1.132
range). On egress, PTP packet timestamps are updated based on the time spent
between ingress and egress.
The default setting is disabled.
Command mode: Global configuration
ip ptp source­interface loopback <1‐5>
Loopback interface used as source IP address for delay‐request packets sent
during synchronization with the master clock in ordinary slave mode.
By default, the interface with the lowest index from the master clock's VLAN is
used.
Command mode: Global configuration
no ip ptp source­interface loopback
Sets source IP address for delay‐request packets sent during synchronization
with the master clock in ordinary slave mode to the interface with the lowest
index from the master clock's VLAN.
Command mode: Global configuration
no ptp
Disables both PTP ordinary slave clock mode and PTP End‐to‐End transparent
clock mode.
Command mode: Global configuration