Reference Guide

Time and Network Time Protocol (NTP) | 1069
Defaults
Not configured.
Command Modes
CONFIGURATION
Command
History
Usage
Information
You can configure multiple time serving hosts (up to 250). From these time serving hosts, the FTOS
will choose one NTP host with which to synchronize. Use the show ntp associations to determine
which server was selected.
Since a large number of polls to NTP hosts can impact network performance, Force10 Networks
recommends that you limit the number of hosts configured.
Related
Commands
ntp source
c e s
Specify an interface’s IP address to be included in the NTP packets.
Syntax
ntp source interface
To delete the configuration, enter no ntp source.
Parameters
Defaults
Not configured.
prefer (OPTIONAL) Enter the keyword prefer to indicate that this peer has priority over other
servers.
version
number
(OPTIONAL) Enter the keyword version and a number to correspond to the NTP
version used on the server.
Range: 1 to 3
Version 8.3.5.0 Introduced on S55
Version 7.6.1.0 Support added for S-Series
Version 7.5.1.0 Support added for C-Series
pre-Version 6.1.1.0 Introduced for E-Series
show ntp associations Displays NTP servers configured and their status.
interface
Enter the following keywords and slot/port or number information:
• For an 100/1000 Ethernet interface, enter the keyword
GigabitEthernet followed by
the slot/port information.
• For a 1-Gigabit Ethernet interface, enter the keyword
GigabitEthernet followed by
the slot/port information.
• For Loopback interfaces, enter the keyword
loopback followed by a number from
zero (0) to 16383.
• For a Port Channel interface, enter the keyword
lag followed by a number:
C-Series and S-Series Range: 1-128
E-Series Range: 1 to 255 for TeraScale
• For SONET interface types, enter the keyword
sonet followed by the slot/port
information.
• For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet
followed by the slot/port information.
• For VLAN interface, enter the keyword
vlan followed by a number from 1 to 4094.