Delete an NTP server configuration

Access mode

enable

Syntax

no switchServices ntp server

Arguments

Field Name Description
id integer A unique identifier, and priority, for this NTP server. A value of 1 is the highest priority.

Valid values are from 1 to 5.
ipAddress ipAddress The IP address for this NTP server. Use 4-byte dotted decimal format.
prefer enumeration Optional: Indicates whether this NTP server is the preferred server if two servers show different times. This argument is meaningful only when you configure two servers; if you configure three or more, the NTP function automatically finds the most reliable server.

The default setting is "false".

Valid values: true, false
burst enumeration Optional: Indicates whether to send NTP requests to this server in burst mode; that is, transmit eight send/receive cycles over a 32-second interval.

Burst mode is useful for initially and quickly calibrating a system clock, but it puts a heavy burden on the NTP server and network. Without burst mode, the system sends one NTP request per minPoll interval, and calibration usually occurs within 5 minutes; with burst mode, calibration takes a few seconds. Always set burst to false for normal system operation.

The default setting is "false".

Valid values: true, false
minPoll enumeration Optional: The minimum time, in seconds, between time queries sent to this NTP server.
Some NTP time servers restrict clients to no more than 500 requests per day (about one every 3 minutes). Set minPoll according to your server's rules.

The default setting is "16".

Valid values:
  • 16 : Poll the NTP server every 16 seconds.
  • 32 : Poll the NTP server every 32 seconds.
  • 64 : Poll the NTP server every 64 seconds (approximately 1 minute).
  • 128 : Poll the NTP server every 128 seconds (approximately 2 minutes).
  • 256 : Poll the NTP server every 256 seconds (approximately 4 minutes).
  • 512 : Poll the NTP server every 512 seconds (approximately 8.5 minutes).
  • 1024 : Poll the NTP server every 1024 seconds (approximately 17 minutes).
  • 2048 : Poll the NTP server every 2048 seconds (approximately 34 minutes).
  • 4096 : Poll the NTP server every 4096 seconds (approximately 68 minutes).
  • 8192 : Poll the NTP server every 8192 seconds (approximately 2.25 hours).
  • 16384 : Poll the NTP server every 16384 seconds (approximately 4.55 hours).
  • 32768 : Poll the NTP server every 32768 seconds (approximately 9.1 hours).
  • 65536 : Poll the NTP server every 65536 seconds (approximately 18.2 hours).
  • 131072 : Poll the NTP server every 131072 seconds (approximately 36.4 hours).
maxPoll enumeration Optional: The maximum time, in seconds, between time queries sent to the NTP server.

The default setting is "1024".

Valid values:
  • 16 : Poll the NTP server every 16 seconds.
  • 32 : Poll the NTP server every 32 seconds.
  • 64 : Poll the NTP server every 64 seconds (approximately 1 minute).
  • 128 : Poll the NTP server every 128 seconds (approximately 2 minutes).
  • 256 : Poll the NTP server every 256 seconds (approximately 4 minutes).
  • 512 : Poll the NTP server every 512 seconds (approximately 8.5 minutes).
  • 1024 : Poll the NTP server every 1024 seconds (approximately 17 minutes).
  • 2048 : Poll the NTP server every 2048 seconds (approximately 34 minutes).
  • 4096 : Poll the NTP server every 4096 seconds (approximately 68 minutes).
  • 8192 : Poll the NTP server every 8192 seconds (approximately 2.25 hours).
  • 16384 : Poll the NTP server every 16384 seconds (approximately 4.55 hours).
  • 32768 : Poll the NTP server every 32768 seconds (approximately 9.1 hours).
  • 65536 : Poll the NTP server every 65536 seconds (approximately 18.2 hours).
  • 131072 : Poll the NTP server every 131072 seconds (approximately 36.4 hours).
version integer Optional: The NTP version number, which is transmitted in the NTP packets. That is, the setting restricts NTP communication to servers that implement NTP at or below the configured version.

The current NTP standard is version 3, but version 4 has been in development since 1994. Some public NTP servers are running version 4, so we suggest you accept the default, which allows all current and previous versions. You should set a lower version only if your NTP server requires it.

Valid values are from 1 to 4; the default setting is "4".
stratum integer The stratum level of server.
rxPkts counter32 The number of received packets.
txPkts counter32 The number of transmitted packets.
droppedPkts counter32 The number of packets dropped.
timeouts counter32 The number of response timeouts.
operStatus enumeration The status of the peer.

Valid values:
  • unknown : state of server is unknown.
  • responding : server is responding.
  • notResponding : server is not responding.