04-24-2012 01:02 PM - edited 03-07-2019 06:19 AM
The 3750-12S-S comes with IP based IOS. I know it is possible to upgrade the IOS on a 3750X-48P-L from LAN based to IP based IOS. However, can the IOS on the 12-S be downgraded to the LAN based IOS?
04-24-2012 04:04 PM
No, the minimum software on 12-S is IP Based. It can be upgraded to IP Services, but not downgrade to LAN Base.
Have a look at table-1 in this link
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps6406/data_sheet_c78-584733.html
HTH
04-24-2012 05:06 PM
Like what Reza said, it's an "upward" step only: LAN Base > IP Base > IP Services. You can't go downward.
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