Juniper JUNOSE 11.3, Configuration Manual

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CHAPTER 3
Installing JunosE Software
The JunosE Software resides on a nonvolatile storage (NVS) card located in the switch
route processor (SRP) module. Each SRP module is shipped with an NVS card that
contains a software release. New software releases are available for download from the
Juniper Networks website at
http://www.juniper.net/customers/support
. You can use the
downloaded image bundle to create your own software CDs.
CAUTION: See the Release Notes for extra information about installing and
upgrading the software.
This chapter provides information on how to install a new software release on a router
and contains the following sections:
• Overview on page 117
•
Platform Considerations on page 119
•
Installing Software When a Firewall Exists on page 119
• Installing Software When a Firewall Does Not Exist on page 124
• Copying Release Files from One Router to Another on page 130
•
Upgrading Systems That Are Operating with Two SRP Modules on page 131
•
Upgrading JunosE Software on page 133
• Downgrading JunosE Software on page 135
Overview
If the router contains only one SRP module, we recommend you divert traffic to another
router before installing a new software release because the router is unavailable during
the installation process. Depending on whether a firewall separates the router from the
network host, you can then complete the appropriate software installation. (See “Installing
Software When a Firewall Exists” on page 119 or “Installing Software When a Firewall
Does Not Exist” on page 124.) However, if the router contains two SRP modules, you can
upgrade the software while the system is operating. (See “Upgrading Systems That Are
Operating with Two SRP Modules” on page 131.)
When installing new JunosE Software, you must copy the contents of the release files
to a network host and transfer the release files to at least one router in the network.
117 Copyright © 2010, Juniper Networks, Inc.