H3C S3100 Series Command Manual page 757

Command Manual (For Soliton) – NTP
H3C S3100 Series Ethernet Switches
synchronization: Synchronization right. This level of right permits the peer device to
synchronize its clock to the local switch but does not permit the peer device to perform
control query.
server: Server right. This level of right permits the peer device to perform
synchronization and control query to the local switch but does not permit the local
switch to synchronize its clock to the peer device.
peer: Peer right. This level of right permits the peer device to perform synchronization
and control query to the local switch and also permits the local switch to synchronize its
clock to the peer device.
acl-number: Basic access control list (ACL) number, in the range of 2000 to 2999.
Description
Use the ntp-service access command to set the access control right from the remote
device to the local NTP server.
Use the undo ntp-service access command to remove the configured access control
right to the local NTP server.
By default, the access control right from the remote device to the local NTP server is
peer.
NTP service access-control rights from the highest to the lowest are peer, server,
synchronization, and query. When a local NTP server receives an NTP request, it will
perform an access-control right match and will use the first matched right.
The ntp-service access command only provides a minimal degree of security
measure. A more secure way is to perform identity authentication.
Refer to the ntp-service authentication enable command for related configuration.
Example
# Configure the access right from the remote device in ACL 2076 to the local NTP
server as peer.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] ntp-service access peer 2076
# Configure the access right from the remote device in ACL 2028 to the local NTP
server as server.
<Sysname> system-view
System View: return to User View with Ctrl+Z.
[Sysname] ntp-service access server 2028
Chapter 1 NTP Configuration Commands
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