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Upgrade Paths and Compatibility
Upgrade Paths and Compatibility
Table 1
release. Use the information in
Table 1
Current Processor
ESR-PRE1
ESR-PRE2
In general, configurations for earlier releases are compatible with release 12.2(28)SB. However, some
Caution
configuration commands from release 12.2(28)SB may not be understood by earlier releases. It is always
advisable to test the old configuration with the new image before installing the new image on the
production network.
Upgrade Option 1: ESR-PRE1 Upgrade with Cold Start
This procedure assumes the following configuration:
•
•
You need two ESR-PRE2s to replace the ESR-PRE1s.
Note
This upgrade procedure requires a dual ESR-PRE hardware replacement. The hardware replacement
requires a cold reboot and therefore is a service-affecting hardware upgrade. The router will not be
available for user traffic starting with
is complete.
Upgrading to Cisco IOS Release 12.2(28)SB on a Cisco 10000 Series Router
2
shows the upgrade procedure options matched to the starting ESR-PRE version and Cisco IOS
Upgrade Procedures Matched to ESR-PRE Version and IOS Release
Cisco IOS Release
12.0(22)S
12.0(23)S
12.0(24)S
12.0(25)S
12.0(26)S
12.0(27)S3 or earlier
12.0(28)S1 or earlier
12.0(30)S2 or earlier
12.0(25)SX8 or earlier
12.2(16)BX or earlier
12.3(7)XI1 or earlier
12.0(30)S3 or later
12.0(27)S4 or later
12.0(28)S2 or later
12.0(25)SX9 or later
12.3(7)XI2 or later
Cisco 10000 series chassis with two installed ESR-PRE1 processors.
A non-upgrade-enabled image such as 12.0(25)SX6 or 12.0(27)S2 on the ESR-PRE1s; see
for a list of affected images.
Table 1
to determine which upgrade procedure to use.
Use Procedure...
Step 3
of the upgrade, and traffic cannot resume until the upgrade
Table 1
OL-8833-01