Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide Chapter 6 NTP Configuration Commands
3Com Corporation
6-14
interface-type: Specifies an interface along with interface-number.
interface-number: Specifies an interface along with interface-type. The IP address of
this interface is the source address in the NTP messages to be transmitted.
priority: Specifies the server as the one always preferred.
Description
Use the ntp-service unicast-peer command to configure NTP peer mode.
Use the undo ntp-service unicast-peer command to cancel the setting.
By default, NTP version 3 is used, ID authentication is not configured and the server is
not the preferred one.
This command sets the remote server specified by X.X.X.X as the peer of the local
device, while the local device is operating in symmetric active mode. X.X.X.X is a host
address and cannot be the address of the broadcast, multicast or reference clock. In
this configuration, the local device and the remote server can synchronize to each
other.
Example
# Allow the local device and its peer at 128.108.22.44 to synchronize to each other.
Specify NTP version to three and use the IP address of Ethernet 1/0/0 as the source IP
address of the NTP messages.
[3com] ntp-service unicast-peer 128.108.22.44 version 3 source-interface
ethernet 1/0/0
6.1.17 ntp-service unicast-server
Syntax
ntp-service unicast-server [ vpn-instance vpn-instance-name ] {X.X.X.X |
server-name } [ version number | authentication-keyid keyid | source-interface
interface-type interface-number | priority ] *
undo ntp-service unicast-server [X.X.X.X | server-name ]
View
System view
Parameter
vpn-instance vpn-instance-name: Specifies a VPN instance, through which, the local
device can synchronize to the remote server, but not the vice versa.
X.X.X.X: IP address of the remote server.
server-name: Remote server name.
version: NTP version number.