How does Gigabit Ethernet fit into existing networks?

The Gigabit Ethernet technology will be fully compatible with existing networks and preserve user investments in applications, network operating systems, protocols, and network management. The Gigabit Ethernet will preserve the IEEE802.3 and Ethernet frame format, and the IEEE802.3 managed object specifications. Therefore, users can migrate easily to Gigabit speeds with existing applications, network operating systems, protocols, and network management. The Gigabit Ethernet will provide increased bandwidth in those portions of the network where it is needed, while exhibiting seamless integration with a customer's existing Ethernet infrastructure.