Originally Posted by
drwtsn32
Cisco IOS (is an Internetwork Operating System by meaning) is the software used on the vast majority of Cisco Systems routers and current Cisco network switches. (Earlier switches ran CatOS.) IOS is a package of routing, switching, internetworking and telecommunications functions tightly integrated with a multitasking operating system.
Most Cisco products that run IOS also have one or more "feature sets" or "packages", typically eight packages for Cisco routers and five packages for Cisco network switches. For example, Cisco IOS releases meant for use on Catalyst switches are available as "standard" versions (providing only basic IP routing), "enhanced" versions, which provide full IPv4 routing support, and "advanced IP services" versions, which provide the enhanced features as well as IPv6 support.
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Brad, I think you need better understanding of GNS3 and Packet Tracer.
GNS3 is a graphical network simulator. This is based on Dynamips, Pemu (including its wrapper) and in part on Dynagen, it has been developed in python and through PyQt the GUI part is made with the powerful Qt library, famous for its use in the KDE project. GNS3 also uses the SVG technology (Scalable Vector Graphics) to provide high quality symbols for designing your network topologies. Thus, GNS3 is medyo kuti rather than Packet tracer however, GNS3 could interface different CISCO IOS versions - A real IOS can be extracted coming from the real CISCO Devices bearing an extension of ".bin" file. Pero that's not what you think is easy as to be just na ma extract nimo is ok na, but you need a kuti pajud, you need a third-party software to work on that para ma read sa GNS3. then, need config gamay arun mudagan ang mga components just like the way that they are in the real hardware jud.
Packet tracer is also a graphical network simulator. However, you need not the .bin file to run the components. The current version of Packet Tracer supports an array of simulated Application Layer protocols, as well as basic routing with RIP, OSPF, and EIGRP, to the extent required by the current CCNA curriculum. While Packet Tracer aims to provide a realistic simulation of functional networks, the application itself utilizes only a small number of features found within the actual hardware running a current Cisco IOS version. Thus, Packet Tracer is unsuitable for modeling production networks. With the introduction of version 5.3, several new features were added, including BGP. BGP is not part of the CCNA curriculum, but part of the CCNP curriculum.
Packet Tracer is commonly used by Cisco Networking Academy students working towards Cisco Certified Network Associate (CCNA) certification. Due to functional limitations, it is intended by Cisco to be used only as a learning aid, not a replacement for Cisco routers and switches.
Thus, Packet tracer contains limit features unlike GNS3. GNS3 is closes to the real world of network experience (of such about 99%).