Cisco Cisco IOS Software Release 12.0(1)T Guia De Resolução De Problemas

This document is not restricted to specific software and hardware versions.

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Just as a personal computer improves individual productivity, an efficient internetwork improves the
productivity of large groups of people. And in the same way that a local area network (LAN) relies on a
software−driven network operating system (NOS) to function, an internetwork depends on a sophisticated
operating system (also implemented in software) to effectively connect users all over the world.

An internetwork's intelligence lies in its operating system. Network hardware inevitably changes every few
years with the introduction of new generations of processors, switching, and memory components. But the
internetwork's software is the unifying thread that connects otherwise disparate networks and provides a
scalable migration path as needs evolve.

Just as enterprises invest in LAN network operating systems that can evolve as new hardware and applications
are introduced, the Cisco IOS is a strategic investment that enables organizations to safeguard the future of
their internetworks. Cisco IOS supports inevitable change and migration through its ability to integrate all
evolving classes of network platforms. This includes routers, ATM switches, LAN and WAN switches, file
servers, intelligent hubs, personal computers and any other devices that have a strategic impact on an
organization's internetwork. By powering Cisco platforms and those delivered by technology partners who
incorporate Cisco IOS into their products, Cisco IOS enables companies to build and enhance a single,
integrated, cost−effective information systems infrastructure.

Today's multifaceted enterprise internetworks typically consist of four distinct sectors, each with its own
specific mission:

The core of the internetwork provides broad, reliable wide−area connections among all worldwide

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