Siemens S223 - Manual (Page 85)

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