show ntp peer

show ntp peer <a.b.c.d>

Description

Show NTP peer information.

Syntax

Parameter

Description

<a.b.c.d>

IP address of an NTP peer

Usage guidelines

The show ntp peer command is used for NTP server troubleshooting, and should only be used under the supervision of Aruba technical support. Issue the show ntp servers command to view basic settings for currently configured NTP servers.

Related Commands

To configure an NTP server, use the command ntp server.

Command History

This command was available in ArubaOS 3.0.

Command Information

Platforms

Licensing

Command Mode

All platforms

Base operating system

Enable and Config mode on local and master controllers

show ntp servers

show rft servers [brief]

Description

Show information for Network TIme Protocol (NTP) servers.

Syntax

Parameter

Description

brief

Display the IP address of the defined NTP servers, iburst and key settings.

Examples

The following example shows values for the primary and backup NTP servers. The primary server is marked with an asterisk (*) and the backup server is marked with an equals sign (=). Note that a backup server will not display delay, offset or dispersion data, as it is not currently in use.

showntp01161.jpg

The output of this command includes the following parameters:

Parameter

Description

remote

IP address of the remote NTP server defined using the cli command ntp server.

local

IP address of the local clock.

st

NTP uses hierarchical levels of clock sources, or strata, and assigns each layer a number starting with zero at the root. The st column in the output of this command represents the number of servers between the configured NTP server and the root reference clock.

poll

Interval, in seconds, between the local NTP server’s attempt to poll the remote NTP server.

reach

An index that measures whether or not the remote NTP server could be reached at eight most recent polling intervals. If the NTP server has just been configured and hasn’t yet been polled successfully, the value will be zero (0). A value of 377 indicates that the last eight poll queries were successful.

delay

Delay, in seconds, between the time that the local clock polls the NTP server and the NTP server returns a reply.

offset

The difference in time, in seconds, between the local clock and the NTP server.

disp

Dispersion represents the maximum error of the local clock relative to the reference clock, and is a measurement of the time server and network quality. Lower dispersion values are preferred over higher dispersion values.

The following example shows the ntp servers configuration. The NTP server IP address, key ID and iburst status are shown when the ntp servers brief command is used.

showntp01164.jpg

 

Related Commands

To configure an NTP server, use the command ntp server.

Command History

Release

Modification

ArubaOS 3.0

Command introduced

ArubaOS 6.1

The key-id parameter output displays when the ntp servers brief command is used.

Command Information

Platforms

Licensing

Command Mode

All platforms

Base operating system

Enable and Config mode on local and master controllers

show ntp status

show ntp status

Description

Show information for a NTP server.

Syntax

No parameters.

Example

The following example shows values for the primary NTP server.

showntp01167.jpg

The output of this command includes the following parameters:

Parameter

Description

system uptime

The number of seconds the local NTP server has been associated with the

switch.

time since reset

The number of seconds since the last time the local NTP server was restarted.

bad stratum in packet

The number of NTP packets with a corrupted stratum bit.

old version packets

Number of packets that match the previous NTP version. A version number is in every NTP packet.

new version packets

Number of packets that match the current NTP version.    

unknown version number

Number of packets with an unknown NTP version.

bad packet format

   Number of NTP packets dropped due to an invalid packet format.

packets processed

Number of NTP packets received and processed by the controller.

bad authentication

Number of NTP packets that failed to be authenticated.

packets rejected

Number of NTP packets rejected because they had an invalid format.

system peer

The IP address of the peer NTP server.

system peer mode

The peer mode of this remote association:

  • Symmetric Active

  • Symmetric Passive

  • Client

  • Server

  • Broadcast

leap indicator

This parameter indicates whether or not a leap-second should be inserted or removed at the end of the last day of the current month.

  • 00      no warning

  • 01      +1 second (following minute has 61 seconds)

  • 10      -1 second (following minute has 59 seconds)

stratum

The stratum level of the peer

precision

The advertised precision of the switch. This value can range from -4 and -20, inclusive.

root distance

Total round trip delay to the stratum 1 reference clock.

root dispersion

Total dispersion to the stratum 1 reference clock. This value is a cumulative measure of all errors associated with the network hops and servers between the NTP server and its stratum 1 server.

reference ID

IP address of the remote NTP server

reference time

Time when the local system clock was last set or corrected, in NTP timestamp

format.

system flags

This parameter displays any flags configured for this NTP entity.

jitter

The average magnitude of jitter between several time queries.

stability

The average magnitude of offset between several time queries

broadcastdelay

The broadcast delay of this NTP server association, in seconds.

authdelay

The authentication delay of this NTP server association, in seconds.

Related Commands

To configure an NTP server, use the command ntp server.

Command History

This command was available in ArubaOS 3.0.

Command Information

Platforms

Licensing

Command Mode

All platforms

Base operating system

Enable and Config mode on local and master controllers

Note:this release has not been updated since the release of the pdf