System Time and Date | 1027
Figure 50-4. Displaying the Calculated NTP Synchronization Variables
Configure NTP broadcasts
With FTOS, you can receive broadcasts of time information. You can set interfaces within the system to
receive NTP information through broadcast.
To configure an interface to receive NTP broadcasts, use the following commands in the INTERFACE
mode:
Disable NTP on an interface
By default, NTP is enabled on all active interfaces. If you disable NTP on an interface, FTOS drops any
NTP packets sent to that interface.
To disable NTP on an interface, use the following command in the INTERFACE mode:
To view whether NTP is configured on the interface, use the
show config command in the INTERFACE
mode. If
ntp disable is not listed in the show config command output, then NTP is enabled. (The show
config
command displays only non-default configuration information.)
Configure a source IP address for NTP packets
By default, the source address of NTP packets is the IP address of the interface used to reach the network.
You can configure one interface’s IP address to be included in all NTP packets.
Task Command Command
Set the interface to receive NTP packets.
ntp broadcast client
INTERFACE
Table 50-1.
2w1d11h : NTP: Maximum Slew:-0.000470, Remainder = -0.496884
Command Syntax Command Mode Purpose
ntp disable
INTERFACE Disable NTP on the interface.
R5/R8(conf)#do show calendar
06:31:02 UTC Mon Mar 13 1989
R5/R8(conf)#ntp update-calendar 1
R5/R8(conf)#do show calendar
06:31:26 UTC Mon Mar 13 1989
R5/R8(conf)#do show calendar
12:24:11 UTC Thu Mar 12 2009
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