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NETGEAR 7000 Series Managed Switch Administration Guide Version 7.3
Because Netgear may change IP addresses assigned to its time servers, it is best to access a SNTP server by
DNS name instead of using a hard-coded IP address. The public time servers available are time-a, time-b,
and time-c.
To use this feature, follow the steps below:
Enable a DNS name server and access a time server with the following commands:
(Netgear switch) (config)#ip domain-lookup
(Netgear switch) (config)#ip name-server 192.168.1.1
(Netgear switch) (config)#sntp server time-a.netgear.com
where "192.168.1.1" is the public network gateway IP address for your device.
This method of setting DNS name look-up can be used for any other applications that require a public IP
address, for example, a RADIUS server.
Web Interface: Setting Named SNTP Server
To use the Web interface to configure SNTP, proceed as follows:
1.
Configure SNTP server
a.
From the main menu, select System > Management>Time>SNTP Server Configuration. A screen
similar to the following displays.
Figure 17-3
b. Enter the following information in the SNTP Server Configuration.
•
Select the DNS from the Server Type pull-down menu
•
In the Address field, enter time-f.netgear.com
•
In the Port field, enter 123
•
In the Priority field, enter 1
17-6
Simple Network Time Protocol (SNTP)
v1.0, November 2008
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