Juniper Networks 8 manual Upgrading NVS Cards on SRP Modules

Maintaining ERX Routers

Upgrading from Release 5.1.1 or Lower-Numbered Releases to Release 6.x.x or Higher-Numbered Releases

Release 5.1.1 or lower-numbered releases support application images only up to 172 MB. To install larger application images for Release 6.0.0 and higher-numbered releases, you must first install Release 5.1.2 (or a higher-numbered 5.x.x release). This enables the system to support application images greater than 172 MB. For example, you cannot go from Release 5.1.1 to Release 7.2.0 without first upgrading to Release 5.1.2. See the following table for compatibility of releases.

JUNOSe Release	Highest Release Able to	Cannot Load	Maximum Application Image
	Load
5.1.1 or lower-numbered	5.3.5p0-2 or the	6.x.x or higher-numbered	~172 MB
release	highest-numbered 5.x.x	release
	release
5.1.2 or higher-numbered	No limitation	Not applicable	~234 MB
release
7.2.0 or higher-numbered	No limitation	Not applicable	~256 MB
release

Your software upgrades may be available remotely through Telnet or FTP, or may be delivered on a new NVS card. Depending on how you access the software updates, there are two different procedures to follow. For more detailed information on installing software, and about NVS cards and SRP modules, see:

JUNOSe System Basics Configuration Guide, Chapter 6, Managing Modules

“Upgrading NVS Cards on SRP Modules” on page 87

Upgrading NVS Cards on SRP Modules

This section describes how to install higher-capacity NVS cards on SRP modules.

The procedure you use depends on the number of SRP modules in the system.

A new NVS card already contains the software release you ordered.

NOTE: The new NVS card must contain the same software release that you are running on the system.

Upgrading a System That Contains One SRP Module

If the system contains only one SRP module, you must power down the system before you upgrade the NVS card.

Upgrading NVS Cards on SRP Modules 87