Cisco 4900 IOS upgrade

[patelvc7601]

I am planning to upgrade cisco 4948 IOS upgrade.

We have few with older code( 12.2(25)EWA7), when issue sh ver shows as Catalyst 4000 L3 Switch Softwware. while newer version of the switch show as Catalyst 4500 L3 switch.

1 Is this/(sh ver output) just becasue of the Older code ?

My 2 question is according to release note :

http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/release/note/OL_9592.html#wp305142

You need to upgrade your ROMMON before the IOS .

2 What is the approximate time it take to do this ROMMON upgrade ?

Sincerely

Viral

[glen.grant · Accepted solution]

The rommon upgrade takes about 10 seconds.  It's part of the normal upgrade process.  Download the rommon code and the new ios code you want to use into bootflash.  Make sure config register is at 0x2102 if not change it .If there are any old boot statements in the config remove those.  Input your boot statements with the rommon statement "first"  then the ios boot statement .  Write mem , then reload .The box will load the new rommon code in about 10-20 seconds and then reload itself with the new ios code.  When code is loaded , remove the boot statement pointing to the rommon code and as final cleanup remove the rommon code out of bootflash. Then squeeze bootflash to free up the space in bootflash.

[patelvc7601]

Thanks for the quick response.