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JUNOS Feature Licenses
To enable some JUNOS Software features or router scaling levels, you may need to
purchase, install, and manage separate software license packs. The presence, on the
router, of the appropriate software license keys (passwords) determines whether you
can configure and use certain features or configure a feature to a predetermined
scale.
For information about how to purchase JUNOS Software licenses, contact your Juniper
Networks sales representative.
As an honor-based licensing structure, JUNOS feature and scaling licenses are
universal, and the same feature or scaling key can be installed and configured on
multiple routers. However, to conform to JUNOS feature or scale licensing
requirements, you must purchase one license per router.
Software Package Information Security
All JUNOS Software is delivered in signed packages that contain digital signatures,
Secure Hash Algorithm (SHA-1), and Message Digest 5 (MD5) checksums. A package
is installed only if the checksum within it matches the hash recorded in its
corresponding file. Which checksum is used depends on the software version:
Configuration Files
All configuration settings for the router are handled in the configuration files on the
router. These files are saved in the
Configuration File Selection Sequence
During the boot process, the router is configured based on a predefined configuration
file. The router selects the configuration file based on the sequence shown in
Figure 1 on page 10.
is the build number of the product
b
is the spin number of the product
s
Digital signatures are used when you upgrade or downgrade between
JUNOS Release 7.0 and a later version.
The SHA-1 checksum is used when you upgrade or downgrade between
JUNOS Release 6.4 and a later version.
The MD5 checksum is used when you upgrade or downgrade between
JUNOS Release 6.3 or earlier and a later version.
Chapter 1: Introduction to JUNOS Software
/config
directory on the router.
JUNOS Feature Licenses
9
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