> # Configuring 10-Gbps FC Mode

> The 48-port 8-Gbps Advanced Fibre Channel module (DS-X9248-256K9) and the 32-port 8-Gbps Advanced Fibre Channel module (DS-X9232-256K9)can switch between two speed modes—the 1-, 2-, 4-, 8-Gbps or 10-Gbps. By default, the modules are online in the 1-, 2-, 4-, and 8-Gbps modes when they are loaded for the first time. There are two ways to change the ports to the 10-Gbps speed mode:

> - Using the 10G-speed mode command, which is the recommended method.
> - Using the generic speed configuration switchport speed command which has certain constraints.

> The following conditions apply when the ports in the module can be configured to 10-Gbps speed mode:

> - The ports in the module can be configured to 10-Gbps speed only when the DS-13SLT-FAB3 module bandwidth is 256-G. Any other combination of fabric modules will not let the ports come up in 10-Gbps.
> - When in 10-Gbps mode, the ports in the module that are not 10-Gbps capable are disabled and will be in out-of-service state.
> - The ports function only in full rate mode. They cannot be moved to shared rate mode.
> - The ports cannot be configured in any other speed.
> - Ports that are capable of 10-Gbps that are disabled or out-of-service cannot be put back in service using the no out-of-service command. To put these ports back in service, all ports in the module first have to be moved to the out-of-service state. Then they can be brought back to the in service state.
> - Local switching must be disabled, otherwise, ports cannot be configured in dedicated mode.

> Only certain ports on the 48-port and 32-port 8-Gbps Advanced Fibre Channel modules are 10-Gbps capable. When running in 10-Gbps mode, the non-10-Gbps ports cannot be operational. They have to be either in shut state or out-of-service state.

> ## Detailed Steps

> To configure the interface mode using DCNM-SAN, follow these steps:

> 1. Expand Switches > FC Interfaces > Physical.

> You see the interface configuration in the Information pane.

> 2. Click the General tab.
> 3. Click Mode Admin. Set the desired interface mode from the Admin drop-down menu.
> 4. (Optional) Set other configuration parameters using the other tabs.
> 5. Click Apply Changes icon.

> Copyright 2010-2015, Cisco Systems, Inc. All rights reserved.