Configuring An Interface To Receive Ntp Messages; Setting Access Control Authority Of The Local Router Services - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
Table 8-13 Set the local clock as the NTP master clock
Set the local clock as the NTP master
clock
Remove the NTP master clock setting
The parameter X.X.X.X is the IP address of the reference clock, which is 127.127.1.u.
The stratum number of the NTP master clock can be specified. The argument
layers-number is used to specify the stratum number of the local clock, which is in the
range of 1 to 15 and defaults to 8. When no IP address is specified, the local clock is the
NTP master clock by default.

8.2.5 Configuring an Interface to Receive NTP Messages

The following configuration is used to enable or disable an interface to receive the NTP
messages.
Perform the following operations in interface view.
Table 8-14 Enable/disable an interface to receive NTP messages
Disable an interface to receive NTP
messages
Enable an interface to receive NTP
messages
These configurations must be configured on the interface disabled/enabled to receive
NTP messages.

8.2.6 Setting Access Control Authority of the Local Router Services

The following configuration is used to set the access authority of the NTP service of the
local router. This is only a low level security approach. 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 in a way from the minimum access authority to
the maximum authority. All matches are based on the first match. The match order is
peer, server, server only(synchronization), and query only.
Perform the following operations in system view.
Operation
Operation
3Com Corporation
8-9
Chapter 8 NTP Configuration
Command
ntp-service refclock-master [ X.X.X.X ]
[ layers-number ]
undo ntp-service
[ X.X.X.X ]
Command
ntp-service in-interface disable
undo ntp-service in-interface disable
refclock-master