Siemens S323 User Manual

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User Manual                                                                               UMN:CLI 
SURPASS hiD 6615 S223/S323 R1.5 
A50010-Y3-C150-2-7619                                                                         85 
To display a configured NTP, use the following command. 
Command Mode 
Description 
show ntp 
Enable 
Global 
Shows a configured NTP function. 
 
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)# 
 
 
6.1.5 
NTP (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 
ntp bind-address A.B.C.D 
Assigns IP address which receiving the message from 
server during transmitting the messages with NTP 
server. 
no ntp bind-address 
Global 
Deletes the binding-IP address. 
 
6.1.6 
Simple 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