KB.15.15

SNTP server authentication support

The following must be performed on the SNTP server:

• The same authentication key-identifier, trusted key, authentication mode and key-value that

were configured on the SNTP client must also be configured on the SNTP server.

• SNTP server authentication must be enabled on the server. If any of the parameters on the

server are changed, the parameters have to be changed on all the SNTP clients in the network

as well. The authentication check will fail on the clients otherwise, and the SNTP packets will

be dropped.

NOTE: SNTP server is not supported on HP products.

IMPORTANT: If any of the parameters on the server are changed, the parameters have to be

changed on all the SNTP clients in the network as well. The authentication check fails on the clients

otherwise, and the SNTP packets are dropped.

Configuring other SNTP Parameters

IMPORTANT: 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.

SNTP disabled

Syntax

sntp disabled

The default mode. SNTP does not operate, even if specified by the Menu interface Time Sync

Method parameter or the CLI timesync command.

SNTP for broadcast or unicast mode

Enabling SNTP means configuring the time protocol for broadcast or unicast mode.

Poll interval

Syntax

sntp poll-interval <30-720>

Configures the poll interval, which is the amount of time between updates of the system clock via

SNTP.

Specifies the amount of time between updates of the system clock via SNTP. The default is 720

seconds and the range is 30 to 720 seconds.

IMPORTANT: This parameter is separate from the poll interval parameter used for TimeP

operation.

NOTE: Enabling the SNTP mode also enables the SNTP poll interval.

34 Time Protocols