Users Guide

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 1-GigabitEthernet interface, enter the keyword GigabitEthernet then the
slot/port information.
• For a 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet then
the slot/port information.
• For a Loopback interface, enter the keyword loopback then a number from 0 to
16383.
• For a port-channel interface, enter the keywords port-channel then the port-
channel ID.
• For VLAN interface, enter the keyword vlan then a number from 1 to 4094.
Defaults Not configured.
Command Modes CONFIGURATION
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
9.10(0.0) Introduced on the S6100–ON.
9.8(2.0) Introduced on the S3100 series.
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.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.11.1 Introduced on the Z9000.
8.5.1.0 Added support for 4-port 40G line cards.
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.
System Time and Date 1361