3com 3031 Instruccion De Instalación

while the local router works in broadcast mode; it can also be set to send NTP 
multicast packet, while the local router works in multicast mode, or be set to 
receive NTP multicast packet, while the local router works in multicast client mode.

■

Configure NTP server mode

■

Configure NTP peer mode

■

Configure NTP broadcast server mode

■

Configure NTP broadcast client mode 

■

Configure NTP multicast server mode 

■

Configure NTP multicast client mode

The following configuration is used to set the remote server specified by the 
X.X.X.X as the local time server. The X.X.X.X is a host address and cannot be the 
address of the broadcast, multicast or reference clock. The local router operates in 
client mode. In this mode, the local client device can be synchronized to the 
remote server and the remote server cannot be synchronized to the local client 
device. 

Perform the following in the System View.

The range of the NTP version number is 1 to 3. It is 3 by default. The range of the 
authentication key ID number is 1 to 4294967295. The 

 or the 

specifies that the source IP address in the 

packets is obtained from the interface when the local router transmits NTP packets 
to the time server. The parameter 

priority

 specifies that the time server is the 

preferred one. 

The following configuration is used to set the remote server specified by the 
X.X.X.X as the peer of the local router. The local router is run in symmetric active 
mode. The 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 router can be 
synchronized to the remote server and the remote server can also be synchronized 
to the local server. 

Perform the following in the System View.

Table 79   Configuring NTP server mode

Configure NTP time server

ntp-service unicast-server X.X.X.X [ version 
number | authentication-keyid keyid | 
source-interface { { interface-name | 
interface-type } interface-number } | 
priority ] *

Remove NTP server mode