Steps 
 
1. 
On the navigation tree, click [Application→ SNTP]. The SNTP configuration page is displayed, 
see Figure 54. 
 
Figure 54 SNTP 
 
 
 
Table 35 lists the SNTP  parameters. 
 
Table 35 SNTP Parameters 
 
Select the WAN connection 
Primary NTP Server Address 
IP address/realm name of the primary NTP server 
Secondary NTP Server 
Address 
IP address/realm name of the secondary NTP server 
Interval of time synchronization 
Unit: second 
Enable Daylight Saving Time 
Enable the Daylight Saving Time. 
 
2. 
Configure the SNTP parameters, and then click Submit. 
 
 
8.9 
IGMP 
 
 
This section includes the following: 
 
 
Configuring WAN connection