# Cisco Discovery Protocol (CDP) Packet Header

**URL:** https://forum.networklessons.com/t/cisco-discovery-protocol-cdp-packet-header/58838
**Category:** Lessons Discussion
**Created:** [September 2, 2026, 12:35pm UTC](https://forum.networklessons.com/t/cisco-discovery-protocol-cdp-packet-header/58838 "2026-09-02T12:35:06Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![ReneMolenaar](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/renemolenaar/32/488_2.png) [@ReneMolenaar](https://forum.networklessons.com/u/ReneMolenaar)
#### Post date: [September 2, 2026, 12:35pm UTC](https://forum.networklessons.com/t/cisco-discovery-protocol-cdp-packet-header/58838/1 "2026-09-02T12:35:06Z")

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This topic is to discuss the following lesson:

> **[Cisco Discovery Protocol (CDP) Packet Header](https://networklessons.com/network-fundamentals/cisco-discovery-protocol-cdp-packet-header)**
>
> The CDP header format defines how Cisco Discovery Protocol (CDP) encapsulates device information in TLVs for neighbor detection.