Cisco Systems 10000 Series installation instructions Upgrade Paths and Compatibility

Upgrade Paths and Compatibility

Upgrade Paths and Compatibility

Table 1 shows the upgrade procedure options matched to the starting ESR-PRE version and Cisco IOS release. Use the information in Table 1 to determine which upgrade procedure to use.

Table 1	Upgrade Procedures Matched to ESR-PRE Version and IOS Release
Current Processor		Cisco IOS Release	Use Procedure...
ESR-PRE1		12.0(22)S	Upgrade Option 1: ESR-PRE1 Upgrade with
		12.0(23)S	Cold Start, page 2
		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
ESR-PRE2		12.2(16)BX or earlier	Upgrade Option 2: ESR-PRE2 Upgrade with
		12.3(7)XI1 or earlier	Cold Start, page 4
ESR-PRE1		12.0(30)S3 or later	Upgrade Option 3: ESR-PRE1 Upgrade with
		12.0(27)S4 or later	RPR Switchover, page 5
		12.0(28)S2 or later
		12.0(25)SX9 or later
ESR-PRE2		12.3(7)XI2 or later	Upgrade Option 4: ESR-PRE2 Upgrade with
			RPR Switchover, page 8

Caution In general, configurations for earlier releases are compatible with release 12.2(28)SB. However, some 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:

•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 Table 1 for a list of affected images.

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 Step 3 of the upgrade, and traffic cannot resume until the upgrade is complete.

Upgrading to Cisco IOS Release 12.2(28)SB on a Cisco 10000 Series Router

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