Use the System > Time (Configure General - Manual) page to set the system time on the switch manually without using SNTP.
Shows the current time set on the switch.
Sets the hour. (Range: 0-23)
Sets the minute value. (Range: 0-59)
Sets the second value. (Range: 0-59)
Sets the month. (Range: 1-12)
Sets the day of the month. (Range: 1-31)
Sets the year. (Range: 1970-2037)
Use the System > Time (Configure General - SNTP) page to configure the switch to send time synchronization requests to time servers. Set the SNTP polling interval, SNTP servers.
Specify the polling interval at which the switch will query the time servers.
Shows the current time set on the switch.
Sets the interval between sending requests for a time update from a time server. (Range: 16-16384 seconds; Default: 16 seconds)
Use the System > Time (Configure General - NTP) page to configure NTP authentication and show the polling interval at which the switch will query the specified time servers.
Shows the current time set on the switch.
Enables authentication for time requests and updates between the switch and NTP servers. (Default: Disabled)
You can enable NTP authentication to ensure that reliable updates are received from only authorized NTP servers. The authentication keys and their associated key number must be centrally managed and manually distributed to NTP servers and clients. The key numbers and key values must match on both the server and client.
Shows the interval between sending requests for a time update from NTP servers. (Fixed: 1024 seconds)
Use the System > Time (Configure Time Server) pages to specify the IP address for NTP/SNTP time servers, or to set the authentication key for NTP time servers.
Specifying SNTP Time Servers
Use the System > Time (Configure Time Server - Configure SNTP Server) page to specify the IP address for up to three SNTP time servers.
Sets the IPv4 address for up to three time servers. The switch attempts to update the time from the first server, if this fails it attempts an update from the next server in the sequence.
Specifying NTP Time Servers
Use the System > Time (Configure Time Server - Add NTP Server) page to add the IP address for up to 50 NTP time servers.
Adds the IPv4 or IPv6 address for up to 50 time servers.The switch will poll the specified time servers for updates when the clock maintenance type is set to NTP on the System > Time (Configure General) page. It issues time synchronization requests at a fixed interval of 1024 seconds. The switch will poll all the time servers configured, the responses received are filtered and compared to determine the most reliable and accurate time update for the switch.
Specifies the NTP version supported by the server. (Fixed: Version 3)
Specifies the number of the key in the NTP Authentication Key List to use
for authentication with the configured server. NTP authentication is optional.
If enabled on the System > Time (Configure General) page, you must also
configure at least one key on the System > Time (Add NTP Authentication
Key) page.
(Range: 1-65535)
Specifying NTP Authentication Keys
Use the System > Time (Configure Time Server - Add NTP Authentication Key) page to add an entry to the authentication key list.
Specifies the number of the key in the NTP Authentication Key List to use for authentication with a configured server. NTP authentication is optional. When enabled on the System > Time (Configure General) page, you must also configure at least one key on this page. Up to 255 keys can be configured on the switch. (Range: 1-65535)
An MD5 authentication key string. The key string can be up to 32 case-sensitive printable ASCII characters (no spaces).
NTP authentication key numbers and values must match on both the server and client.
Use the System > Time (Configure Time Zone) page to set the time zone. SNTP uses Coordinated Universal Time (or UTC, formerly Greenwich Mean Time, or GMT) based on the time at the Earth‘s prime meridian, zero degrees longitude, which passes through Greenwich, England. To display a time corresponding to your local time, you must indicate the number of hours and minutes your time zone is east (before) or west (after) of UTC. You can choose one of the 80 predefined time zone definitions, or your can manually configure the parameters for your local time zone.
A drop-down box provides access to the 80 predefined time zone configurations. Each choice indicates it¡¦s offset from UTC and lists at least one major city or location covered by the time zone.
Allows the user to define all parameters of the local time zone.
Configures the time zone to be before (east of) or after (west of) UTC.)
Assigns a name to the time zone. (Range: 1-30 characters)
The number of hours before or after UTC. The maximum value before UTC is 12. The maximum value after UTC is 13.
The number of minutes before/after UTC.
Use the System > Time (Configure Summer Time) menu to configures summer time (that is, Daylight Savings Time) for the switch’s internal clock.
Command Usage
In some countries or regions, clocks are adjusted through the summer months so that afternoons have more daylight and mornings have less. This is known as Summer Time, or Daylight Savings Time (DST). Typically, clocks are adjusted forward one hour at the start of spring and then adjusted backward in autumn.
This configuration page sets the summer-time time zone relative to the currently configured time zone. To specify a time corresponding to your local time when summer time is in effect, you must indicate the number of minutes your summer-time time zone deviates from your regular time zone (that is, the offset).
Parameters
Indicates whether or not Summer Time settings are currently is use.
Enables or disables Summer Time settings.
Name of the timezone while Summer Time is in effect, usually an acronym. (Range: 1-30 characters)
Sets the configuration option to one of the following modes
Predefined - Sets the start and end of summer time using predefined configurations for several major regions of the world.
Date - Sets the start, end, and offset times of summer time on a one-time basis.
Offset - Summer time offset from the regular time zone. (Range: 1-120 minutes; Default: 60 minutes)
From - The date and time at which to start using Summer Time settings.
To - The date and time at which to stop using Summer Time settings.
Recurring - Sets the start, end, and offset times of summer time on a recurring basis.
Offset - Summer time offset from the regular time zone. (Range: 1-120 minutes; Default: 60 minutes)
From - The recurring date and time at which to start using Summer Time settings.
To - The recurring date and time at which to stop using Summer Time settings.