> # FSPF Global Configuration

> By default, FSPF is enabled on switches in the Cisco MDS 9000 Family.

> Some FSPF features can be globally configured in each VSAN. By configuring a feature for the entire VSAN, you do not have to specify the VSAN number for every command. This global configuration feature also reduces the chance of typing errors or other minor configuration errors.

> Note FSPF is enabled by default. Generally, you do not need to configure these advanced features.

> Caution | The default for the backbone region is 0 (zero). You do not need to change this setting unless your region is different from the default. If you are operating with other vendors using the backbone region, you can change this default to be compatible with those settings.

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