> # Enabling In-Order Delivery Globally

> To ensure that the in-order delivery parameters are uniform across all VSANs on an Cisco MDS 9000 Family switch, enable in-order delivery globally.

> Only enable in-order delivery globally if this is a requirement across your entire fabric. Otherwise, enable IOD only for the VSANs that require this feature.

> Note Enable in-order delivery on the entire switch before performing a downgrade to Cisco MDS SAN-OS Release 1.3(3) or earlier.

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