esp32-w5500-l2discover
An ESP32 paired with a WIZnet W5500 passively sniffs LLDP/CDP packets from the Ethernet cable
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Project description
Project Overview Anyone who has ever done cable management in an office or data center knows the frustration: dozens of Ethernet cables tangled together, and no easy way to tell which cable connects to which switch port. Commercial solutions mean spending hundreds to thousands of dollars on a handheld cable tester. This project reproduces the core feature of those tools at a fraction of the cost. An ESP32 paired with a WIZnet W5500 passively sniffs LLDP/CDP packets from the Ethernet cable, then instantly displays the connected switch name, port, and VLAN on an OLED screen. Results can also…
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