> # Information About Trunking

> Trunking, also known as VSAN trunking, is a feature specific to switches in the Cisco MDS 9000 Family. Trunking enables interconnect ports to transmit and receive frames in more than one VSAN, over the same physical link. Trunking is supported on E ports and F ports.

> This section includes the following topics:

> - Trunking E Ports
> - Trunking F Ports
> - Key Concepts
> - Trunking Protocols
> - Trunk Modes
> - Trunk-Allowed VSAN Lists and VF_IDs

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