Description 3Coms CoreBuilder 6000 EFSM switches traffic among 16 Ethernet segments and 2 FDDI segments. The EFSM combines Ethernet switching, FDDI switching, and Ethernet-to-FDDI translation bridging on a single module. The 16 Ethernet segments of the EFSM connect externally through the front panel. The FDDI segments connect either internally to two of the three backplane FDDI paths or externally through the front panel. The EFSM offers a variety of media options for Ethernet and FDDI segments. It provides the following intelligent switching features: 802.1d Spanning Tree Protocol or Express Switching modes, user-defined packet filtering, virtual LAN (VLAN) support and support for up to 8K (8,192) MAC addresses across its eighteen ports.
