Qtech QSW-8200-28F-AC-DC — настройка команд NTP для синхронизации времени на устройствах [11/20]

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User Manual

Chapter 2. Commands for NTP 11

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 Usage Guide: None.

 Example: To configure time server address as 1.1.1.1 on switch.

 Switch(config)#ntp server 1.1.1.1

2.17 ntp syn-interval

 Command: ntp syn-interval <1-3600>

 no ntp syn-interval

 Function: Configure the request packet sending interval of ntp client as 1s-3600s. The

no command recovers to be the default value of 64s.

 Default: 64s.

 Command Mode: Global Mode.

 Usage Guide: For responding the risk of ntp adjusting the system time under the high

latency network, ntp client will select the time information with the smallest latency for

the system time synchronization after sent 8 ntp time requisitions. So at the default

configuration, ntp client sends the requisition packet once every 64s, after 8 times, it

will adjust the time. It means to adjust the system time every 8 minutes. If user wants

to configure the interval, such as one hour, user should adjust the packet sending

interval as 450(3600/8) s.

 Example: Configure to adjust the system time once an hour, and the packet sending

time is 450s.

 Switch(config)#ntp syn-interval 450

2.18 ntp trusted-key

 Command: ntp trusted-key <key-id>

 no ntp trusted-key <key-id>

 Function: To configure the trusted key. The no command cancels the trusted key.

 Parameter: key-id: The id of key, range is from 1 to 4294967295.

 Default: Trusted key is not configured by default.

 Command Mode: Global Mode.

 Usage Guide: None.

 Example: To configure the specified key 20 to trusted key.

 Switch(config)# ntp trusted-key 20

2.19 show ntp status

 Command: show ntp status

 Function: To display time synchronization status, include synchronized or not, layers,

address of time source and so on.

 Parameter: None.

 Default: None.

 Command Mode: Admin and Configuration Mode.

 Usage Guide: None.

 Example: