Netgear M4300-28G (GSM4328S) - Stackable Managed Switch with 24x1G and 4x10G including 2x10GBASE-T and 2xSFP+ Layer 3 ユーザーズマニュアル

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Launch a web browser.

Enter http://<ipaddress> in the web browser address field.

The login window opens.

Enter the user name and password. 

The default admin user name is admin and the default admin password is blank, that is, 
do not enter a password.

Click the Login button. 

The System Information page displays.

Select System > Management > Time > Time Configuration > SNTP Global 
Configuration.

When you select the SNTP option as the Clock Source, the SNTP Global Configuration 
section is displayed below the Time Configuration section of the page.

Select a Client mode radio button to specify the mode of operation of the SNTP client: 

. SNTP is not operational. No SNTP requests are sent from the client and no 

received SNTP messages are processed.

. SNTP operates in a point-to-point fashion. A unicast client sends a request 

to a designated server at its unicast address and expects a reply from which it can 
determine the time and, optionally, the round-trip delay and local clock offset relative 
to the server.

. SNTP operates in the same manner as multicast mode but uses a local 

broadcast address instead of a multicast address. The broadcast address has a 
single subnet scope while a multicast address has Internet wide scope.