3Com 3031 Command Reference Manual page 105

display ntp-service
trace
ntp-service access
synchronized Indicate that the local system is synchronized to a remote NTP server or a
clock source
unsynchronized Indicate that the local system is not synchronized to any remote NTP server
stratum The NTP stratum of the local system
reference If the local system has been synchronized to a remote NTP server or a clock
source, it indicates the address of the remote server or clock source ID
nominal freq Nominal frequency of the hardware clock of the local system
actual freq Actual frequency of the hardware clock of the local system
precision Precision of the local system clock
reftime Reference timestamp
offset Offset of the NTP server relative to the local clock
root delay Overall delay from the local to the master reference clock
root disper Dispersion of the local master reference clock
peer disper Dispersion of the remote NTP server
Syntax
display ntp-service trace [ X.X.X.X ]
View
Any view
Parameter
X.X.X.X: The IP address of the NTP server functioning as the reference clock
source.
Description
Using the display ntp-service trace command, you can display the summary
information of each NTP time server from the local device tracing to the reference
clock source.
This command is used to trace to the reference clock source from the local device
along the time synchronous NTP server chain and display the summary
information of each NTP server.
Example
<3Com> display ntp-service trace
server4: stratum 4, offset 0.0019529, synch distance 0.144135
server3: stratum 3, offset 0.0124263, synch distance 0.115784
server2: stratum 2, offset 0.0019298, synch distance 0.011993
server1: stratum 1, offset 0.0019298, synch distance 0.011993 refid
'GPS Reciever'
The above information displays the synchronous chain of server4. It indicates that
server 4 can be synchronized to server 3, server 3 to server 2 and server 2 to server
1. Server 1 is synchronized from the reference clock source GPS Receiver.
Syntax
ntp-service access { query | synchronization | server | peer } acl-number
undo ntp-service access { query | synchronization | server | peer }
debugging ntp-service 105