Users Guide

Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
Networking OS Command Line Reference Guide.
Version Description
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.6(0.0) Added support for VRF.
9.4.(0.0) Added support for VRF.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.11.1 Introduced on the Z9000.
8.4.1.0 Added IPv6 support.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
6.1.1.0 Introduced on the E-Series.
Usage Information
You can configure multiple time-serving hosts. From these time-serving hosts, the Dell Networking OS
chooses one NTP host with which to synchronize. To determine which server is selected, use the show
ntp associations command.
Because many polls to NTP hosts can affect network performance, Dell Networking recommends
limiting the number of hosts configured.
By default, the system performs a time synchronization if the time difference from the time source is
greater than one second.
Related
Commands
• show ntp associations — displays the NTP servers configured and their status.
ntp source
Specify an interface’s IP address to be included in the NTP packets.
Syntax
ntp source interface
To delete the configuration, use the no ntp source command.
Parameters
interface Enter the following keywords and slot/port or number information:
• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet
then the slot/port information.
• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the
slot/port information.
• For a Loopback interface, enter the keyword loopback then a number from 0
to 16383.
System Time and Date 1634