Most managed switches also typically provide advanced features such as SNMP for remote monitoring and configuration (Simple Network Management Protocol), port mapping for diagnostics, VLANs for network device grouping (virtual local area network), The priority ranking function for ensuring the passage of priority messages, and so on. With a managed switch, you can set up a redundant network. With a ring topology, managed switches can form a ring network. Each managed switch can automatically determine the optimal transmission path and the alternate path, and automatically block the alternate path when the priority path is interrupted.
Managed switches can be managed in several ways: through RS-232 serial port (or parallel port) management, through web browser management, and through network management software management.