# Configure and verify Layer 2 discovery protocols (Cisco Discovery Protocol and LLDP)

Since CDP is enabled by default on broadcast interfaces on Cisco devices, see what you lose when CDP is disabled.

![Lab Topology](https://github.com/CiscoDevNet/cml-community/blob/master/lab-topologies/ccna//Domain_2/2.3-configure_l2_discovery_2/Doman_2_CDP_Configuration_Topology.png)
