H3C Technologies H3C S6300 Series Switches - Manual (Page 82)

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Number of PTP ports : 2
Priority1 : 128
Priority2 : 128
Clock quality :
Class : 248
Accuracy : 254
Offset (log variance) : 65535
Offset from master : N/A
Mean path delay : N/A
Steps removed : N/A
Local clock time : Sun Jan 15 20:57:29 2011
# Display brief PTP statistics on Device B.
[DeviceB] display ptp interface brief
Name State Delay mechanism Clock step Asymmetry correction
XGE1/0/1 N/A P2P Two 0
XGE1/0/2 N/A P2P Two 0
PTP configuration example (IEEE 802.1AS)
Network requirements
As shown in Figure 22 , a PTP domain comprises Device A, Device B, and Device C.
• Configure all devices to use PTP standard IEEE 802.1AS.
• Configure the clock node type of Device A and Device C as OC, and that of Device B as P2PTC. All
clock nodes elect a GM through BMC based on their respective default GM attributes.
• Configure the delay measurement mechanism for Device A and Device C as p2p.
Figure 23 Network diagram
Configuration procedure
1. Configure Device A:
# Specify the PTP standard as IEEE 802.1AS.
system-view
[DeviceA] ptp profile 802.1AS
# Specify the clock node type as OC.
[DeviceA] ptp mode oc
# Enable PTP on Ten-GigabitEthernet 1/0/1.
[DeviceA] interface ten-gigabitethernet 1/0/1
[DeviceA-Ten-GigabitEthernet1/0/1] ptp enable
[DeviceA-Ten-GigabitEthernet1/0/1] quit
XGE1/0/1
Device A Device B Device C
XGE1/0/2 XGE1/0/1 XGE1/0/1
OC OC P2PTC
PTP domain