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Gigabit Ethernet (802.3z)

Introduction

Gigabit Ethernet builds on top of the Ethernet protocol, but increases speed tenfold over Fast Ethernet to 1000 Mbps, or 1 gigabit per second (Gbps). Gigabit Ethernet allows Ethernet to scale from 10/100 Mbps at the desktop to 100 Mbps up the riser to 1000 Mbps in the data center.

By leveraging the current Ethernet standard as well as the installed base of Ethernet and Fast Ethernet switches and routers, network managers do not need to retrain and relearn a new technology in order to provide support for Gigabit Ethernet. Cisco is leading the industry by driving the standards for Gigabit Ethernet while investing in products supporting Gigabit Ethernet, Gigabit Ethernet migration paths, and ATM.