
256 ◾ Enterprise Architecture A to Z
should provide a smooth upgrade path, be cost-effective, support QoS, and not require staff retrain-
ing and new tools. GbE provides high-speed connectivity, but does not by itself provide a full set of
services such as QoS, automatic redundant failover, or higher-level routing services; these are added
via other standards.
e applicable standard is the IEEE 802.3z-1998, which has become Clause 34 thru 42 of the
802.3 specification. is specification was approved by the IEEE in 1998. e work of the IEEE
P802.3ab 1000BASE-T Task Force for a UTP version was completed with the approval of IEEE
802.3ab-1999 in 1