The campus network is split into five major zones, each with a Cisco Catalyst 5000 switch connected with 100 Mbps full-duplex Ethernet
to a Cisco 7513 router at the core of the network.
The other technologies that integrators believe will follow these three by 1997 include switched ethernet (today's number one choice), 100baseVG, full-duplex ethernet
and fibre channel, a high-speed channel (with a British spelling) that uses fiber optic technology and a variety of cable types to interconnect computing devices in small network configurations at speeds of up to 1 gigabit per second.
It's full-duplex Ethernet switching, which doubles the LAN throughput to 20 Mb/s and dedicates the full capacity to a server or other device on the network that might otherwise create a traffic bottleneck.
With full-duplex Ethernet switching, only one station is on the network, so the collision-detection mechanism can be disabled and each pair of wires used to carry 10 Mb/s traffic.
Presently, full-duplex Ethernet is not an IEEE 802.3 standard, but a draft specification is expected before year's end.
Kalpana, Sunnyvale, Calif., pioneered full-duplex Ethernet as an extension to its line of switched Ethernet products.
Also, vendors of full-duplex Ethernet adapters, such as Cogent Data Technologies, Friday Harbor, Wash.; Seeq Technology, Fremont, Calif.; Compaq, Digital Equipment and IBM, are pricing their products to be competitive with half-duplex cards.
At ComNet in Washington, D.C., last January, NBase Switch introduced a full-duplex Ethernet switching hub for workgroups that can provide 20 Mb/s links between a server and up to 12 workstations.