> # Task Flow for Migrating Interfaces from Dedicated Mode to Shared Mode

> To configure the 4-Gbps and 8-Gbps Fibre Channel switching modules migrating from dedicated rate mode to shared rate mode, follow these steps:

> 1. Take unused interfaces out of service to release resources for other interfaces, if necessary.

> See the "Taking Interfaces Out of Service" topic.

> 2. Configure the BB_credits and extended BB_credits, as necessary.

> See the "Configuring Buffer-to-Buffer Credits" topic, and the "Extended BB_credits on Generation 1 Switching Modules" topic.

> 3. Configure the port mode.

> See the "Configuring Interface Modes" topic.

> Note ISL ports cannot operate in shared rate mode.

> 4. Configure the rate mode (dedicated or shared) to use.

> See the "Configuring Rate Mode" topic.

> 5. Configure the traffic speed (1 Gbps, 2 Gbps, 4 Gbps, or autosensing with a maximum of 2 Gbps or 4 Gbps) to use.

> See the "Configuring Port Speed" topic.

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