3Com Switch 8800 Family Configuration Guide

760 CHAPTER 66: NTP CONFIGURATION
IP address ACL number is specified through the acl-number parameter and ranges
from 2000 to 2999. The meanings of other authority levels are as follows:
query: Allow control query for the local NTP service only.
synchronization: Allow request for local NTP time service only.
server: Allow local NTP time service request and control query. However, the local
clock will not be synchronized by a remote server.
peer: Allow local NTP time service request and control query. And the local clock
will also be synchronized by a remote server.
Setting Maximum Local
Sessions
This configuration task is to set the maximum local sessions.
Perform the following configurations in system view.
number specifies the maximum number of local sessions, ranges from 0 to 100,
and defaults to 100.
Displaying and
Debugging NTP
After completing the above configurations, you can use the display command to
show how NTP runs and verify the configurations according to the outputs.
In user view, you can use the debugging command to debug NTP.
Tabl e 710 Set authority to access a local switch
Operation Command
Set authority to access a local
switch
ntp-service access { query | synchronization | server |
peer } acl-number
Cancel settings of the authority
to access a local switch
undo ntp-service access { query | synchronization |
server | peer }
Tabl e 711 Set the maximum local sessions
Operation Command
Set the maximum local sessions ntp-service max-dynamic-sessions number
Resume the maximum number of local
sessions
undo ntp-service max-dynamic-sessions
Tabl e 712 Display and debug NTP
Operation Command
Display the status of NTP service display ntp-service status
Display the status of sessions maintained by
NTP service
display ntp-service sessions [ verbose ]
Display the brief information about every NTP
time server on the way from the local
equipment to the reference clock source.
display ntp-service trace
Enable NTP debugging
debugging ntp-service { access |
adjustment | authentication | event | filter
| packet | parameter | refclock | selection |
synchronization | validity | all }