3com MSR 20-20 참조 매뉴얼

version number: Specifies the NTP version, where number is in the range of 1 to 3 
and defaults to 3.

Use the ntp-service broadcast-server command to configure the device to 
work in the NTP broadcast server mode.

Use the undo ntp-service broadcast-server command to remove the device 
as an NTP broadcast server.

# Configure the device to work in the broadcast server mode and send NTP 
broadcast messages on Ethernet 1/0, using key 4 for encryption, and set the NTP 
version to 3.

<Sysname> system-view

[Sysname] interface ethernet 1/0

[Sysname-Ethernet1/0] ntp-service broadcast-server authentication-ke

yid 4 version 3 

Interface view

None

Use the ntp-service in-interface disable command to disable an interface 
from receiving NTP messages.

Use the undo ntp-service in-interface disable command to restore the 
default.

By default, all interfaces are enabled to receive NTP messages.

■

On an Ethernet interface:

# Disable interface Ethernet 1/0 from receiving NTP messages.

<Sysname> system-view

[Sysname] interface ethernet 1/0

[Sysname-Ethernet1/0] ntp-service in-interface disable 

■

On a VLAN interface:

# Disable VLAN-interface 1 from receiving NTP messages.

<Sysname> system-view

[Sysname] interface ethernet 1/0

[Sysname-Ethernet1/0] ntp-service in-interface disable