IEEE802.3 Higher-Speed Study Group says...

来源: 于 2005-12-13 13:48:21 [旧帖] [给我悄悄话] 本文已被阅读：次

maximum length of at least 25 meters on copper-based link.
Practically 100 meters over Category 5 UTP wiring.
In priciple, no limit :) in terms of either physical extent or number of nodes.