The Junos OS release number represents a particular
revision of the software that runs on a Juniper Networks routing platform,
for example, Junos OS Release 8.5, 9.1, or 9.2. Each Junos OS release
has certain new features that complement the software processes that
support Internet routing protocols, control the device’s interfaces
and the device chassis itself, and allow device system management.
On the Juniper Networks Support Web page, you download Junos OS for
a particular Junos OS release number.
The following example shows how the software release
number is formatted:
m.nZb.s
For example:
9.2R1.8
Where:
- m is the major release number of the product
- n is the minor release number of the product
- Z is the type
of software release. The following release types are used:
- R—FRS/Maintenance release software
- B—Beta release software
- I—Internal release software: Private software release for verifying fixes
- S—Service release software: Released to customers to solve a specific problem—this release will be maintained along with the life span of the underlying release
- X—Special (eXception) release software: Released to customers to solve an immediate problem—customers are expected to migrate to a supported release when available
- b is the build
number of the product
- if b=1: Software is the FRS release
- if b>1: Software is a maintenance release
- s is the spin number of the product
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