KB.15.15

Table 1 SNTP parameters (continued)

OperationSNTP parameter

Used only when the SNTP Mode is set to Unicast. Specifies the IP address

of the SNTP server that the switch accesses for time synchronization updates.

Server Address

You can configure up to three servers; one using the menu or CLI, and two

more using the CLI.

Specifies the SNTP software version to use and is assigned on a per-server

basis. The version setting is backwards-compatible. For example, using

Server Version

version 3 means that the switch accepts versions 1 through 3. Default: 3;

range: 1 to 7.

Specifies the order in which the configured servers are polled for getting the

time.

Priority

Value is between 1 and 3.

Enabling the SNTP mode means to configure it for either broadcast or unicast mode. Remember

that to run SNTP as the switch's time synchronization protocol, you must also select SNTP as the

time synchronization method by using the CLI timesync command (or the Menu interface Time

Sync Method parameter.)

Syntax

timesync sntp

Selects SNTP as the time protocol.

Syntax

sntp [ broadcast | unicast ]

Enables the SNTP mode.

Syntax

sntp server ip-addr

Required only for unicast mode.

Syntax

sntp poll-interval [ 30 - 720 ]

Enabling the SNTP mode also enables the SNTP poll interval.

Default: 720 seconds

Syntax

sntp server priority [1 - 3 ]

Specifies the order in which the configured servers are polled for getting the time.

About SNTP unicast time polling with multiple SNTP servers

When running SNTP unicast time polling as the time synchronization method, the switch requests

a time update from the server you configured with either the Server Address parameter in the

menu interface, or the primary server in a list of up to three SNTP servers configured using the CLI.

If the switch does not receive a response from the primary server after three consecutive polling

intervals, the switch tries the next server (if any) in the list. If the switch tries all servers in the list

without success, it sends an error message to the Event Log and reschedules to try the address list

again after the configured Poll Interval time has expired.

About SNTP: Selecting and configuring 67