> # CDP

> The Cisco Discovery Protocol (CDP) is an advertisement protocol used by Cisco devices to advertise itself to other Cisco devices in the same network. CDP runs on the data link layer and is independent of Layer 3 protocols. CDP is supported on the management Ethernet interface on the supervisor module and the Gigabit Ethernet interfaces on the IPS and MPS-14/2 modules.

> CDP version 1 (v1) and version 2 (v2) are supported in Cisco MDS 9000 Family switches. CDP packets with any other version number are silently discarded when received.

> See the Cisco MDS 9000 Family NX-OS Fundamentals Configuration Guide.

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