4500X Upgrade from 03.08.07.E to 3.11.3aE

[suarej]

Hi everyone, I am upgrading a pair of 4500X in VSS from 3.08 to 3.11, rommon version is "15.0(1r)SG12" I did not see anything in the release notes, that would stop me from doing the upgrade, I am planning to do the following steps.

Action	Command
Backup current IOS	copy bootflash: tftp:
Copy new IOS	copy tftp: bootflash:IMAGE
	copy bootflash: slavebootflash:IMAGE
Verify	dir bootflash:
	dir slavebootflash:
Verify MD5 Hash	verify /md5 bootflash:IMAGE
	verify /md5 slavebootflash:IMAGE
Remove current Boot System	Configure terminal no boot system flash bootflash:IMAGE
Verify	show bootvar Seen in show tech -- register 0x2102
Set new image	Configure terminal
	boot system flash bootflash:IMAGE
	boot system flash slavebootflash:IMAGE
Save configuration	write
Reload both Master and Slave	redundancy reload shelf

Does anyone with more experience see anything wrong or am I missing anything?

Thanks

[balaji.bandi · Accepted solution]

yes, high-level steps are good.

just follow below thread :

https://community.cisco.com/t5/switching/4500x-upgrade-path-from-3-6-7-to-3-11-recommendation/td-p/4005179

[suarej]

Thanks, yes I am running SG11 so no need to upgrade the ROMMON.

[balaji.bandi]

you do not require.

[suarej]

Do you have any experience with the boot system having to specify the slavebootflash and bootflash? or is just setting up bootflash is enough for both?

 no boo system bootflash:old_ios.bin
 boot system bootflash:ROMMON_filename
 boot system bootflash:NEW_IOS_filename.bin
 boot system bootflash:OLD_IOS_filename.bin

[balaji.bandi]

VSS you need to use copying files active bootflash: (primary) you can copy from bootflash to slavebootflash: (this is secondary device)

Boot variable only bootflash:

[Leo Laohoo]

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@suarej wrote:

Backup current IOS

copy bootflash: tftp:

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This is irrelevant.  If you want a "backup" of the old IOS-XE file, go and download the file(s) from the Cisco website. 

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@suarej wrote:

Verify	dir bootflash:
	dir slavebootflash:

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This stage does not provide any benefit. 

[suarej]

This stage does not provide any benefit.

Just wanted to make sure that the file is there