Time Configuration

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Time View

Command	Purpose
show clock	Display the time zone and time of the system.
show supported-timezones	Display the time zones the system supports.

show clock

[Command] show clock

[Purpose] Display the time zone and time of the system.

[View] Privileged User View

[Use Cases]

sonic# show clock
2024-10-19 09:19:01 Tuesday UTC+0000

show supported-timezones

[Command] show supported-timezones

[Purpose] Display the time zones the system supports.

[View] Privileged User View

[Use Cases]

sonic# show supported-timezones

Time Config

Table 2 Time Config

Command	Purpose
clock datetime date time	Set the system time.
clock timezone zone	Set the system time zone.

clock datetime

[Command] clock datetime date time

[Purpose] Set the system time.

[Parameters]

Parameter	Description
date	In YY-MM-DD format.
time	In HH:MM:SS format.

[View] Global Configuration View

[Use Cases]

sonic# configure
sonic(config)# clock datetime 2022-02-22 20:30:30

clock timezone

[Command] clock timezone zone

[Purpose] Set the system time zone.

[Parameters]

Parameter	Description
zone	The default time zone is UTC.

[View] Global Configuration View

[Notes] Run command no clock timezone to restore the system time zone to default.

[Use Cases]

sonic# configure
sonic(config)# clock timezone Asia/Shang

NTP

NTP(Network Time Protocol)is a protocol used to synchronize the time of individual machines on a network.

NTP View

Table 3 NTP View

Command	Purpose
show ntp	Display NTP status.
show ntp server	Display configuration of NTP Server.
show ntp global	Display global configuration of NTP.
show ntp authentication-keyid	Display NTP authentication Key.

show ntp

[Command] show ntp

[Purpose] Display NTP status.

[View] Privileged User View

[Use Cases]

sonic# show ntp
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*10.250.0.240    203.107.6.88     3 u   46   64  377    0.165   10.575   3.198

show ntp server

[Command] show ntp server

[Purpose] Display configuration of NTP Server.

[View] Privileged User View

[Use Cases]

sonic# show ntp server
      SERVER    STATE    TYPE    KEY
------------  -------  ------  -----
10.250.0.242  enabled  server      -
10.250.0.243  enabled  server      -

show ntp global

[Command] show ntp global

[Purpose] Display global configuration of NTP.

[View] Privileged User View

[Use Cases]

sonic# show ntp global
State: enabled
Authentication: disabled
VRF: default

show ntp authentication-keyid

[Command] show ntp global

[Purpose] Display NTP authentication key.

[View] Privileged User View

[Use Cases]

sonic# show ntp authentication-keyid
  KEY ID    TYPE    TRUSTED
--------  ------  ---------
       1     md5        yes

NTP Config

Table 4 NTP Config

Command	Purpose
ntp enable	Enable NTP automatic synchronization service.
ntp server server-ip [authentication-keyid]	Specify a NTP server.
ntp source_interface {mgmt\|loopback\|ethernet\|link-aggregation\|vlan} interface_name	Specify the source interface for NTP.
ntp synchronize [unprivileged] server-ip	Synchronise manually from an NTP server.
ntp synchronize jump	Enable NTP jump synchronization.
ntp vrf {default\|mgmt}	Specify the VRF where the NTP source interface is located.
ntp authentication enable	Enable NTP authentication.
ntp authentication-keyid key_id {md5\|sha1\|sha256\|sha384\|sha512}	Add NTP key.

ntp enable

[Command] ntp enable

[Purpose] Enable NTP automatic synchronization service.

[View] Global Configuration View

[Notes] Run command no ntp enable to disable NTP.

[Use Cases]

sonic(config)# ntp enable

ntp server

[Command] ntp server server-ip [authentication-keyid]

[Purpose] Specify a NTP server.

[Parameters]

Parameter	Description
server-ip\|NTP Server IP address or domain name.	-
authentication-keyid\|	-

[View] Global Configuration View

[Notes] Run command no ntp server server-ip to delete NTP server configuration.

[Use Cases]

sonic(config)# ntp server 10.250.0.242

ntp source_interface {mgmt|loopback|ethernet|link-aggregation|vlan}

[Command] ntp source_interface {mgmt|loopback|ethernet|link-aggregation|vlan} interface_name

[Purpose] Specify the source interface for NTP.

[Parameters]

Parameter	Description
interface_name	Interface name (eg.0/1). When specify mgmt the interface name is 0.

[View] Global Configuration View

[Notes] Run command no ntp source_interface to delete NTP source interface configuration.

[Use Cases]

sonic(config)# ntp source_interface mgmt 0
sonic(config)# ntp source_interface loopback 0

ntp synchronize [unprivileged]

[Command] **ntp synchronize ** [unprivileged] server-ip

[Purpose] Synchronise manually from an NTP server.

[Parameters]

Parameter	Description
unprivileged	This parameter should be enabled when the NTP auto-sync service is already running so that manual synchronisation can be performed over an unprivileged port.
server-ip	Specify NTP server IP address.

[View] Global Configuration View

[Notes] When you run this command, the system will immediately synchronise to NTP server time. This command is valid for a single time and will not be saved to running-config.

[Use Cases]

sonic(config)# ntp synchronize unprivileged 10.250.0.243
18 Nov 20:10:52 ntpdate[385097]: adjust time server 10.250.0.243 offset -0.009762 sec

ntp synchronize jump

[Command] ntp synchronize jump

[Purpose] Enable NTP jump synchronization.

[View] Global Configuration View

[Notes] With this command set, the system will make a time adjustment with a large offset every time the process restarts. By default a jump synchronization will be made only when the offset is over 600 seconds.

[Use Cases]

sonic(config)# ntp synchronize jump

ntp vrf {default|mgmt}

[Command] ntp vrf {default|mgmt}

[Purpose] Specify the VRF where the NTP source interface is located.

[View] Global Configuration View

[Notes] When you have set the management port as NTP source interface as and enabled management VRF, please specify mgmt as NTP VRF. By default, the NTP VRF is default VRF.

[Use Cases]

sonic(config)# ntp vrf default
sonic(config)# ntp vrf mgmt

ntp authentication enable

[Command] ntp authentication enable

[Purpose] Enable NTP authentication

[View] Global Configuration View

[Notes] Run command no ntp authentication enable to disable NTP authentication

[Use Cases]

sonic(config)# ntp authentication enable

ntp authentication-keyid

[Command] ntp authentication-keyid key_id {md5|sha1|sha256|sha384|sha512}

[Purpose] Add NTP key.

[View] Global Configuration View

[Notes] Run command no ntp authentication-keyid key_id to delete NTP key

[Use Cases]

sonic(config)# ntp authentication-keyid 1 md5
Please enter authentication key value:
sonic(config)#