Command Line Reference Guide

Time and Network Time Protocol (NTP) | 1361
debug ntp
c e s
Display Network Time Protocol (NTP) transactions and protocol messages for troubleshooting.
Syntax
debug ntp {adjust | all | authentication | events | loopfilter | packets | select | sync}
To disable debugging of NTP transactions, use the no debug ntp {adjust | all | authentication |
events | loopfilter | packets | select | sync} command.
Parameters
Command Modes
EXEC Privilege
Command
History
ntp authenticate
c e s
Enable authentication of NTP traffic between the switch and the NTP time serving hosts.
Syntax
ntp authenticate
To disable NTP authentication, enter no ntp authentication.
Defaults
Not enabled.
Command Modes
CONFIGURATION
Command
History
Usage
Information
You also must configure an authentication key for NTP traffic using the ntp authentication-key
command.
Related
Commands
adjust Enter the keyword adjust to display information on NTP clock adjustments.
all Enter the keyword all to display information on all NTP transactions.
authentication Enter the keyword authentication to display information on NTP authentication transactions.
events Enter the keyword events to display information on NTP events.
loopfilter Enter the keyword loopfilter to display information on NTP local clock frequency.
packets Enter the keyword packets to display information on NTP packets.
select Enter the keyword select to display information on the NTP clock selection.
sync Enter the keyword sync to display information on the NTP clock synchronization.
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
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
ntp authentication-key Configure authentication key for NTP traffic.
ntp trusted-key Configure a key to authenticate