3com 8807 Reference Guide

C

HAPTER

 55: NTP C

ONFIGURATION

 C

OMMANDS

With this command, the system synchronizes the NTP server link from the local 
device along time till the reference clock source, and displays brief information 
about every NTP server.

# Display brief information about every NTP server on the way from the local 
device to the reference clock source.

<SW8800> display ntp-service trace

 

server 127.0.0.1,stratum 8, offset 0.000000, synch distance 0.00000

 

 refid 127.127.1.0 

ntp-service access { query | synchronization | server | peer } acl-number

undo ntp-service access { query | synchronization | server | peer }

System view

query: Allows to control query authority.

synchronization: Only allows the server to access.

server: Allows query to server and access.

peer: Full access authority.

acl-number: IP address list number.

Use the ntp-service access command to set the authority to access the local 
equipment.

Use the undo ntp-service access command to cancel the access authority 
settings.

By default, there is no limit to the access.

Set authority to access the NTP services on a local Ethernet Switch. This is a basic 
and brief security measure, compared to authentication. An access request will be 
matched with peer, server, synchronization, and query in an ascending order 
of the limitation. The first matched authority will be given.

# Give the authority of time request, query control and synchronization with the 
local equipment to the peer in ACL 2000.

<SW8800> system-view

 

System View: return to User View with Ctrl+Z.

 

[SW8800] ntp-service access peer 2000