Port mapping is accomplished by discovering and correlating port information to MAC address and IP address information. The MAC and IP address information is discovered through a Layer 3 device such as a router or server directly connected to the same subnet as the switch or hub. Traffic arriving on an interface with VLAN translation enabled is mapped from the incoming VLAN to a translated VLAN. On the underlay, the inner dot1q is deleted and switched over to the. Switch Miner is a free lightweight open source utility for Windows that acts as a switch port mapper/switch port discovery tool. Additionally, Switch Port Mapper discovers the MAC address, IP address, and host name of connected devices, as well as details about each port such as operational status and. The Managed Switch Port Mapping Tool is software for Windows that discovers devices attached to port connectors on an SNMP managed network switch. Do you have a rack of ethernet network switches with cables leading to who knows where? Do you need to discover and identify the network. Modern switch port mapping tools now lean heavily on automated discovery to tie physical switch ports to MAC addresses, VLAN membership, and connected device identities using SNMP, LLDP, and CDP. This roundup compares top solutions such as SolarWinds Engineer's Toolset, ManageEngine OpManager, and.