Siemens S223, S323 user manual NTP Network Time Protocol, Simple Network Time Protocol Sntp

User Manual	UMN:CLI
SURPASS hiD 6615 S223/S323 R1.5

To display a configured NTP, use the following command.

Command	Mode	Description
show ntp	Enable	Shows a configured NTP function.
	Global

The following is an example of configuring 203.255.112.96 as NTP server, running it and showing it.

SWITCH(config)# ntp 203.255.112.96 SWITCH(config)# ntp start SWITCH(config)# show ntp

ntp started

ntp server 203.255.112.96 SWITCH(config)#

The following is an example of releasing NTP and showing it.

SWITCH(config)# no ntp SWITCH(config)# show ntp ntp stoped SWITCH(config)#

6.1.5NTP (Network Time Protocol)

The hiD 6615 S223/S323 sends and receives the messages constantly with NTP server in order to adjust the recent time. NTP bind-address help NTP server classify the user’s swith.

To assign IP address that transmitting the message with NTP server, use the following command.

Command	Mode	Description
		Assigns IP address which receiving the message from
ntp bind-address A.B.C.D	Global	server during transmitting the messages with NTP
		server.
no ntp bind-address		Deletes the binding-IP address.

6.1.6Simple Network Time Protocol (SNTP)

NTP (Network Time Protocol) and SNTP (Simple Network Time Protocol) are the same TCP/IP protocol in that they use the same UDP time packet from the Ethernet Time Server message to compute accurate time. The basic difference in the two protocols is the algorithms being used by the client in the client/server relationship.

The NTP algorithm is much more complicated than the SNTP algorithm. NTP normally uses multiple time servers to verify the time and then controls the rate of adjustment or slew rate of the PC which provides a very high degree of accuracy. The algorithm deter- mines if the values are accurate by identifying time server that doesn’t agree with other time servers. It then speeds up or slows down the PC's drift rate so that the PC's time is

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