I think LMS can be places between Layer2 and Layer 3. a feature called Cisco device discovery is available in versions of Campus Manager prior to LMS 3.0.1. The network administrator can discover the devices using different protocols, such as Cisco Discovery Protocol, BGP, OSPF, Address Resolution Protocol (ARP), HSRP, cluster, routing table, and ping sweep on IP range, that are activated at different layers of the Open Systems Interconnection (OSI) model in the device.