Supervisor Engine IIIG delivers bridge address table for up to 16, 000 active MAC addresses and associated VLANs allocated dynamically between active ports. The switching engine provides data path and control for all network interfaces including two integrated Fast Ethernet interfaces that can support redundancy using the spanning-tree algorithm or load sharing when used with VLANs. Gigabit Interface Converter (GBIC)-based uplink ports are used with multimode fiber (MMF) or single-mode fiber (SMF) interfaces using SC connectors. Management functions include monitoring the interface and environmental status and providing SNMP management and the console/Telnet interface.