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SOPHO
IP 5000/SOPHO IP6000
Command Reference Guide
85
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
<NEC-PHILIPS>
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.
ntp-service access
Syntax
ntp-service access { query | synchronization | server | peer } acl-number
undo ntp-service access { query | synchronization | server | peer }
View
System view
Parameter
query
: Query authority is limited.
synchronization
: Only the server is permitted to access.
server
: Allows the server to perform access and query.
peer
: Absolute access.
acl-number
: IP address access list number in the range of 1 to 99.
Description
Using the
ntp-service access
command, you can set the access control
authority of the local device services. Using the
undo ntp-service access
command, you can remove the access control authority that has been set.
By default, there is no access authority.
This command is used to set the access authority of the NTP service of the
local device. A security approach of minimum authority is provided in this
manual. The more secure approach is to perform ID authentication. When there
is an access request, this command can be used to make the matches in
sequence from minimum access authority to the maximum authority. All
matches are based on the first match. The match order is peer, server,
synchronization, query.
Example
Enable the peer in No.76 access list to perform time request, query control and
time synchronization on the local device.
[NEC-PHILIPS]
ntp-service access peer 76