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Chapter 2: Upgrade Behavior, General
Upgrading
When upgrading to SGOS 4.x from SGOS 3.2.4 or higher, the ProxySG saves a copy of the original
configurations. These configurations remain unaffected when configuring features going forward. If
you downgrade to the previous SGOS version, the saved configuration is used and the ProxySG is
restored to that state.
Following the upgrade path provided maintains most of the current settings, the exceptions being
those features that were substantially enhanced in SGOS 4.x.
The only supported direct upgrade is from SGOS 3.2.4 and later. CacheOS 4.x and SGOS 2.x systems
must first be upgraded to the SGOS 3.2.4 release. The following table provides the upgrade paths for
these earlier version.
In SGOS 3.2.4 or greater, deprecation warnings are issued for CPL syntax that is abandoned in SGOS
4.x. Use of abandoned syntax causes CPL compiler errors, the policy will fail to install and the
ProxySG will use the default policy of ALLOW or DENY for all traffic. Following the recommended
upgrade process ensures that policy integrity and therefore network security, are maintained.
Table 2.1: Upgrade Paths
Current OS Direct Upgrade
to SGOS 3.2.4?
Next OS version
required
Comments
CA 1.0.00-CA3.1.15 No CA 3.1.16
CA 3.1.16 No CA 4.1.10
CA 3.5.00-CA3.5.07 No CA 3.5.08
CA 3.5.08 No CA 4.1.10
CA 4.0.00-CA4.1.09 No CA 4.1.10
CA 4.1.10 or greater No SG 2.1.07
CA 4.2.00 No CA 4.2.01
CA 4.2.01 or greater Yes None Can directly upgrade to SGOS 3.2.4
SA 1.0.00-SA2.0.x No SA 2.0.x
SA 2.0.x No SA 4.1.10
SA 4.0.00-SA4.1.09 No SA 4.1.10
SA 4.1.10 or greater Yes None Can directly upgrade to SGOS 3.2.4.
SG 2.0.00-SG 2.1.06 No SG 2.1.07
SG 2.1.07 or greater Yes None Can directly upgrade to SGOS 3.2.4.