Cisco Systems 10000 Series installation instructions Rollback Procedure for Option

Upgrade Option 1: ESR-PRE1 Upgrade with Cold Start

To perform the upgrade, follow these steps:

Step 1 On the active ESR-PRE1, issue the write memory command to make sure the startup configuration is up to date.

Step 2 Copy the saved startup configuration to a TFTP server and edit the configuration to reflect the new capabilities of the 12.2(28)SB software. At a minimum, you must edit the boot system variable to point to the new image, using the boot system bootflash:image_name command and specifying your chosen image name.

Step 3 Remove both ESR-PRE1s, and install one ESR-PRE2 in one open slot. Make sure you have direct console access to the ESR-PRE2.

Step 4 The boot image should load itself from bootflash (the expected behavior). If the ESR-PRE2 comes up in ROM monitor, type boot to load the boot image.

Step 5 Configure the network management interface (typically FastEthernet 0/0/0) and the gateway IP address the same as they were on the removed ESR-PRE1s to enable communications with the TFTP server.

Step 6 Copy the edited startup configuration from the TFTP server to your startup configuration using the copy tftp startup command.

Step 7 Copy the 12.2(28)SB image from the TFTP server to bootflash, being sure to use the same name for the image that you specified in Step 2 for the boot system variable in the startup configuration.

Step 8 Enter the reload command and type no when asked if you want to save your running configuration.

If the ESR-PRE2 config-register is set to 0x2, this command will autoboot the new image.

If the ESR-PRE2 config-register is set to 0x0, it will come up in ROM monitor. Boot the new image from ROM monitor using the boot bootflash:image_name command.

Step 9 After the ESR-PRE2 is up and running the new image, verify that the Cisco IOS version, configuration, boot variable, and traffic are as expected.

Step 10 Shut down the FastEthernet 0/0/0 interface on the first ESR-PRE2 using the shut command. Then insert the second ESR-PRE2 and repeat Step 4 through Step 8 for the second ESR-PRE2. After the second ESR-PRE2 has booted, use the no shut command on the active ESR-PRE2 to activate the FastEthernet 0/0/0 interface again.

Now the system should be operating as a dual-PRE redundant 12.2(28)SB system in the configured mode (either SSO or RPR+), running the properly modified startup configuration. You can verify the redundancy status using the show redundancy or show redundancy state command.

Step 11 Enter the write memory command from the active console to bring the startup configuration up to date on the active and standby ESR-PRE2s.

Rollback Procedure for Option 1

To roll back to the ESR-PRE1 configuration:

Step 1 Remove both ESR-PRE2s and reinstall the ESR-PRE1s.

The ESR- PRE1s should operate as they did in the original setup.

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

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