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CHAPTER 6
Updating Devices
About Updating
Copyright © 2010, Juniper Networks, Inc.
This chapter explains how to update the running configuration (the configuration on the
device) with the modeled configuration (the configuration in the Juniper Networks Network
and Security Manager (NSM) UI). This chapter also describes the events that can require
you to update your device, as well as NSM tools that help you to track, verify, and preview
the update process.
After you model or make changes to a device configuration in the NSM UI, you must install
that device configuration on the physical Juniper Networks device before those changes
can take effect. NSM supports atomic configuration, a fail-safe feature that ensures
successful updates occur without errors or the update is not performed. Atomic
configuration is always enabled and occurs automatically when a device update causes
the device to lose its connection to the management server.
This chapter contains the following sections:
About Updating on page 241
Knowing When to Update on page 246
Using Preview Tools on page 250
Performing an Update on page 254
Tracking Device Updates on page 256
When you update a managed device, you modify the running device configuration (the
configuration currently installed on the physical device) with the modeled device
configuration (the configuration currently modeled in NSM).
You can update a single device, multiple devices, vsys devices, clusters, virtual chassis
or device groups simultaneously. For example, if you have created a device group that
includes only NetScreen-5GT devices, you can update the entire device group in a single
update procedure. During the update, NSM displays the progress of the update on each
individual device so you can see exactly what is happening. Simultaneous updating also
reduces downtime to unaffected devices and areas of your network.
Updating a device is a three-step process.
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