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What is the purpose of the ROMMON F1 and F2 and Gold regions?


On my 6509-E, all the modules show this:

Region F1: INVALID

Region F2: INVALID

Currently running ROMMON from S (Gold) region

Is this alright? Is the Gold region like a default region where ROMMON is always installed. And are F1 and F2 just storage partitions that are available to hold backup copies of the ROMMON? From what I read, it sounds like I can copy ROMMON images to F1 and F2, either the same version as the Gold region or different versions. Is that correct? Why would I want to copy different ROMMON versions to F1 and F2? For testing, or??

3 Replies 3

Reza Sharifi
Hall of Fame Master Hall of Fame Master
Hall of Fame Master

What version of IOS are you running?  If you are running an older version, you can upgrade the IOS, and that should also upgrade the Rommon for you.  If not, you can just upgrade Rommon by itself.


I'm at 12.2(33)SXI4a or something like that. Yes, I can upgrade to a higher IOS. I have also read what seems to suggest that an IOS upgrade will also upgrade the ROMMON's.

But, still, what are these F1, F2 and Gold regions for? What practical use for them?


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They allow you to have newer ROMMON code.  Having more than one, should allow you to select which you want to boot with (the default boots with the last one loaded).

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