Concept Guide

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1031

Related Conguration Tasks

• Conguring NTP Broadcasts

• Disabling NTP on an Interface

• Conguring a Source IP Address for NTP Packets (optional)

Enabling NTP

NTP is disabled by default.

To enable NTP, specify an NTP server to which the Dell EMC Networking system synchronizes. To specify multiple servers, enter the

command multiple times. You may specify an unlimited number of servers at the expense of CPU resources.

• Specify the NTP server to which the Dell EMC Networking system synchronizes.

CONFIGURATION mode

ntp server ip-address

Examples of Viewing System Clock

To display the system clock state with respect to NTP, use the show ntp status command from EXEC Privilege mode.

DellEMC#show ntp status

Clock is synchronized, stratum 4, reference is 10.16.151.117, vrf-id is 0

frequency is -44.862 ppm, stability is 0.050 ppm, precision is -18

reference time deeef7ef.85eeaa10 Tue, Jul 10 2018 9:16:31.523 UTC

clock offset is -0.167449 msec, root delay is 149.194 msec

root dispersion is 54.557 msec, peer dispersion is 0.782 sec

peer mode is client

DellEMC#

To display the calculated NTP synchronization variables received from the server that the system uses to synchronize its clock, use the

show ntp associations command from EXEC Privilege mode.

DellEMC#show ntp associations

remote vrf-Id ref clock st when poll reach delay offset disp

====================================================================================

*10.16.151.117 0 45.127.112.2 3 10 16 377 0.46400 -7.4879 3.19999

* master (synced), # backup, + selected, - outlier, x falseticker

DellEMC#

Conguring NTP Broadcasts

With Dell EMC Networking OS, you can receive broadcasts of time information.

You can set interfaces within the system to receive NTP information through broadcast.

To congure an interface to receive NTP broadcasts, use the following commands.

• Set the interface to receive NTP packets.

INTERFACE mode

ntp broadcast client

Example of Conguring NTP Broadcasts

2w1d11h : NTP: Maximum Slew:-0.000470, Remainder = -0.496884

1032

System Time and Date