The LANID is the quintessential diagnostic tool for network installers and troubleshooters working with small LANs. Using the LANID, network administrators can quickly confirm features of LAN devices and diagnose problems during LAN installation. With a push of a button, the LANID will determine whether the device you are testing whether it supports the following topologies and capabilities:

• Auto negotiation
• 100BASE-Tx full duplex
• 100BASE-Tx half duplex
• 10BASE-T full duplex
• 10BASE-T half duplex
• 100BASE-T4

Moreover, the LAN ID can also act as a network device, negotiating with other LAN devices to determine faults. The ?auto-negotiation? function provides automatic speed matching for multi-speed devices, allowing devices to configure to the best possible mode of operation over a link. When linked up with another LAN device, the LAN ID will provide the following information about that device:

• Whether the link is up or not
• Whether the device is transmitting a packet or not
• Whether the device is working in full duplex mode or half duplex mode
• Whether the device is operating in 100BASE-Tx, 10BASE-T or 100BASE-T4 mode
• Whether a data transmission error has occurred The compact "pen style" design provides the user with optimum convenience and portability.