Reference Guide

Version Description
6.1.1.0 Introduced on the E-Series.
Usage Information
You can configure multiple time-serving hosts (up to 250). From these time-
serving hosts, the system chooses one NTP host with which to synchronize. To
determine which server was selected, use the show ntp associations
command.
Because many polls to NTP hosts can impact network performance, Dell
Networking recommends limiting the number of hosts configured.
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.
C9000 Series
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 Loopback interfaces, enter the keyword loopback
then a number from zero (0) to 16383.
• For a Port Channel interface, enter the keyword lag
then a number. The range is from 1 to 128.
• 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 VLAN interface, enter the keyword vlan then a
number from 1 to 4094.
• For a port extender (PE) Gigabit Ethernet interface, enter
the keyword peGigabitEthernet then the pe-id /
stack-unit / port-id information. The pe-id range is 0–
255; the stack unit number range is 0–7; and the port-id
range is 0 –47.
Defaults Not configured.
Command Modes CONFIGURATION
2012
System Time and Date