3com MSR 20-20 참조 매뉴얼

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C
HAPTER
 152: NTP C
ONFIGURATION
 C
OMMANDS
Description
Use the ntp-service refclock-master command to configure the local clock as a 
reference source for other devices.
Use the undo ntp-service refclock-master command to remove the local clock 
as a reference source.
n
The stratum level of a clock defines the clock precision. The value range is 1 to 16. 
The clock precision decreases from stratum 1 to stratum 16. A stratum 1 clock has 
the highest precision, and a stratum 16 clock is not synchronized and cannot be 
used as a reference clock.
Example
# Specify the local clock as the reference source, with the stratum level of 3.
<Sysname> system-view
[Sysname] ntp-service refclock-master 3 
ntp-service reliable authentication-keyid
Syntax
ntp-service reliable authentication-keyid keyid
undo ntp-service reliable authentication-keyid keyid
View
System view
Parameter
keyid: Authentication key number, in the range of 1 to 4294967295.
Description
Use the ntp-service reliable authentication-keyid command to specify that 
the created authentication key is a trusted key. When NTP authentication enabled, 
a client can be synchronized only to a server that can provide a trusted 
authentication key.
Use the ntp-service reliable authentication-keyid command to remove an 
authentication key as a trusted key.
No authentication key is configured to be trusted by default.
Example
# Enable NTP authentication, specify to use MD5 encryption algorithm, with the 
key ID of 37 and key value of “BetterKey”, and specify that this key is a trusted 
key.
<Sysname> system-view
[Sysname] ntp-service authentication enable
[Sysname] ntp-service authentication-keyid 37 authentication-mode md
5 BetterKey
[Sysname] ntp-service reliable authentication-keyid 37 
ntp-service source-interface
Syntax
ntp-service source-interface interface-type interface-number
undo ntp-service source-interface