Juniper SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X User Manual

Before You Configure NTP
Before you configure NTP, complete the following procedures:
1. Configure at least one IP address on the router.
2. Check that the system clock reads the correct time to within 15 minutes, and
that the time zone and summer time settings are correct.
3. Reset the system clock manually if the time, time zone, or summer time settings
are incorrect.
4. If you want to configure the NTP system as an NTP client, choose the NTP servers.
Choosing NTP Servers
For the system, synchronizing to several stratum 2 or higher servers on the Internet
provides sufficient accuracy for the timing of event messages. You can find a list of
stratum 2 servers at www.eecis.udel.edu/~mills/ntp.
If you have access to an NTP server that you know to be reliable and accurate, you
can synchronize the system to that server alone. You may prefer this method if you
have used Simple Network Time Protocol (SNTP) with other equipment.
If you know that an NTP server broadcasts on a network to which the system has
an interface, you do not need to configure NTP servers. Simply enable the system
to accept NTP broadcasts on that interface.
NTP Configuration Tasks
By default, the system is an NTP client. You must configure NTP client parameters
to start NTP client operation. You can also configure the system as an NTP server,
whether or not you configure NTP client parameters.
Enabling NTP Services
Before you can configure NTP client parameters or enable a virtual router to act as
an NTP server, you must enable NTP services. When you enable NTP services, the
NTP client associates itself with the current virtual router. Because there is only one
system clock to update, only the virtual router on which you configure NTP can act
as the NTP client. However, any virtual router can act as an NTP server. To enable
NTP services:
1. (Optional) Access the virtual router with which you want to associate NTP services.
2. Issue the ntp enable command.
ntp enable
■ Use to enable NTP services on the system.
■ This command associates NTP services and the NTP client with the current virtual
router.
Before You Configure NTP ■ 527
Chapter 10: Configuring the System Clock

Juniper SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X Specifications

General

Brand	Juniper
Model	SYSTEM BASICS - CONFIGURATION GUIDE V 11.1.X
Category	Software
Language	English