Netgear FSM726v3 7000 Series Managed Switch Administration Guide for Software - Page 342

CLI: Configuring SNTP, Simple Network Time Protocol SNTP

Page 342 highlights

NETGEAR Managed Switches Software Administration Manual, Release 8.0 CLI: Configuring SNTP NETGEAR switches do not have a built-in real-time clock. However, it is possible to use SNTP to get the time from a public SNTP/NTP server over the Internet. You may need permission from those public time servers. The following steps configure SNTP on the switch: 1. Configure the SNTP server IP address. The IP address can be either from the public NTP server or your own. You can search the Internet to locate the public server. The servers available could be listed in domain-name format instead of address format. In that case, use the ping command on the PC to find the server's IP address. The following example configures the SNTP server IP address to 208.14.208.19. (Netgear Switch) (Config)#sntp server 208.14.208.19 2. After configuring the IP address, enable SNTP client mode. The client mode may be either broadcast mode or unicast mode. If the NTP server is not your own, you must use unicast mode. (Netgear Switch) (Config)#sntp client mode unicast 3. Once enabled, the client will wait for the polling interval to send the query to the server. The default value is approximately one minute. After this period, issue the show command to confirm the time has been received. The time will be used in all logging messages. (Netgear Switch) #show sntp server Server IP Address: 208.14.208.19 Server Type: ipv4 Server Stratum: 4 Server Reference Id: NTP Srv: 208.14.208.3 Server Mode: Server Server Maximum Entries: 3 Server Current Entries: 1 SNTP Servers ------------ IP Address: 208.14.208.19 Address Type: IPV4 Priority: 1 Version: 4 Port: 123 Last Update Time: Mar 26 03:36:09 2006 Last Attempt Time: Mar 26 03:36:09 2006 Last Update Status: Success Total Unicast Requests: 2 Failed Unicast Requests: 0 16-3 Simple Network Time Protocol (SNTP) v1.0, October 2009

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NETGEAR Managed Switches Software Administration Manual, Release 8.0
16-3
Simple Network Time Protocol (SNTP)
v1.0, October 2009
CLI: Configuring SNTP
NETGEAR switches do not have a built-in real-time clock. However, it is possible to use SNTP to get the
time from a public SNTP/NTP server over the Internet. You may need permission from those public time
servers. The following steps configure SNTP on the switch:
1.
Configure the SNTP server IP address. The IP address can be either from the public NTP server or your
own. You can search the Internet to locate the public server. The servers available could be listed in
domain-name format instead of address format. In that case, use the ping command on the PC to find
the server’s IP address. The following example configures the SNTP server IP address to
208.14.208.19.
2.
After configuring the IP address, enable SNTP client mode. The client mode may be either broadcast
mode or unicast mode. If the NTP server is not your own, you must use unicast mode.
3.
Once enabled, the client will wait for the polling interval to send the query to the server. The default
value is approximately one minute. After this period, issue the show command to confirm the time has
been received. The time will be used in all logging messages.
(Netgear Switch) (Config)#sntp server 208.14.208.19
(Netgear Switch) (Config)#sntp client mode unicast
(Netgear Switch) #show sntp server
Server IP Address:
208.14.208.19
Server Type:
ipv4
Server Stratum:
4
Server Reference Id:
NTP Srv: 208.14.208.3
Server Mode:
Server
Server Maximum Entries:
3
Server Current Entries:
1
SNTP Servers
------------
IP Address: 208.14.208.19
Address Type: IPV4
Priority: 1
Version: 4
Port: 123
Last Update Time: Mar 26 03:36:09 2006
Last Attempt Time: Mar 26 03:36:09 2006
Last Update Status: Success
Total Unicast Requests: 2
Failed Unicast Requests: 0