Activating zoneset only from the core switch

Folks,
            How can i restrict so that only the core switch is allowed to make changes to the active zoneset?
Also if I am merging two switches and they have active zonesets but with different names, would that merge the two fabrics?
Thanks,
Tarun

your probably thinking about NPV, NPV is disruptive but NPIV isn't. It is just a feature that you would enable on the core.
The acronyms are confusing and easily mixed up.
NPIV allows multiple initiators to login over a single FC/port-channel. NPV changes the operation of the switch so that to the core it looks like a host with a lot of initiators/HBAs. In NPV mode the edge switch doesn't consume any FC domain IDs.
Here is a link that should be helpful - http://www.cisco.com/en/US/prod/collateral/ps4159/ps6409/ps5989/ps9898/white_paper_c11-459263.html

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