Some switch manufacturers will enable LLDP by default, others may require LLDP to be enabled in the switch configuration. The information included in the frame will depend on the configuration and capabilities of the switch. We can see there is a significant amount of information about the switch and the switch port contained in this frame. The capture was then uploaded to Link-Live™ and the capture was viewed using Wireshark.Ībove is an LLDP frame as decoded by Wireshark. The capture app on the EtherScope® nXG was used to capture the network traffic. In this tech tip, we are going to take a look at what an LLDP frame looks like on the wire and how that information is displayed on the EtherScope® nXG. When trying to determine where a wall jack is connected, this can eliminate the need to go to the wiring closet and trace the cable from the patch panel to the switch. This information may contain the name of the switch, chassis number, slot, and port. Every one of the NetAlly tools is designed to listen for LLDP frames that are reporting on the information contained in the frame. The Link Layer Discovery Protocol (LLDP) is a vendor-neutral protocol that is used to advertise capabilities and information about the device.

Wireshark display filter lldp