LanTopolog is a standalone software that provides physical network topology discovery, visualization and monitoring.
With this simple network monitor and analysis software you get physical network topology discovery, visualization and monitoring. This amazing program provides automatic physical network topology discovery based on SNMP and incorporates features like: its detailed and searchable physical network topology map it is possible to isolate network connectivity failures, with Topology views one can look into network devices that are connected to each switch port; port connections are labeled with port numbers, it includes network monitoring tools, generates alarms each time it detects a network failure, provides email notifications, provides Web browser-based interface that allows access from anywhere in the network, and much more.
LanTopolog can also display data monitoring device's state (active/inactive) in real-time using ICMP.