> # Licensing Requirements for SAN Extension Tuner

> To use the SET, you need to obtain the SAN_EXTN_OVER_IP license (see the Cisco Family NX-OS Licensing Guide).

> The following table shows the licensing requirements for this feature:

> License | License Description
> --- | ---
> SAN extension over IP package for IPS-8 modules (SAN_EXTN_OVER_IP) SAN extension over IP package for IPS-4 modules (SAN_EXTN_OVER_IP_IPS4) | It comprises the SAN extension tuner features.
> SAN extension over IP package for MPS-14/2 modules (SAN_EXTN_OVER_IP_IPS2) | This feature applies to the MPS-14/2 module and the fixed Cisco MDS 9216i Switch IP ports.
> SAN extension over IP package for one MPS-18/4, one MPS-18/4 FIPS, or one SSN-16 engine in the Cisco MDS 9500 Series (SAN_EXTN_OVER_IP_18_4) (SAN_EXTN_OVER_IP_SSN16) | This feature applies to the MPS-18/4, MPS-18/4 FIPS, or SSN-16 modules.

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