TAILIEUCHUNG - Cisco Router Handbook

We have all heard the saying "It’s what’s inside that counts" at some point in our lives. In the world of networking Cisco’s Internetwork Operating Systems (IOS) has taken that saying to heart. The very core of Cisco Systems phenomenal success is the breadth of services provided by the Cisco IOS software. No two networks are exactly alike. There are connectivity requirements that differ between healthcare and manufacturing, entertainment and shipping, finance and telecommunications. Each of which has different security issues. Each requires the ability to scale with reliability and manageability. The Cisco IOS software has proven to meet these criteria and to build on new requirements. | Cisco Router Handbook Cisco Router Handbook George Sackett 0-07-058098-7 Chapter 1 2 3 4 5 6 file C temp Cisco_Router_Handbook 12 23 2000 5 07 04 PM Cisco Router Handbook - Beta Version Chapter 1 2 3 4 5 6 Cisco Router Handbook Sackett 0-07-058098-7 Chapter One Cisco IOS Software We have all heard the saying It s what s inside that counts at some point in our lives. In the world of networking Cisco s Internetwork Operating Systems IOS has taken that saying to heart. The very core of Cisco Systems phenomenal success is the breadth of services provided by the Cisco IOS software. No two networks are exactly alike. There are connectivity requirements that differ between healthcare and manufacturing entertainment and shipping finance and telecommunications. Each of which has different security issues. Each requires the ability to scale with reliability and manageability. The Cisco IOS software has proven to meet these criteria and to build on new requirements due to its flexibility in meeting the rapid changing network requirements of all businesses. 1. Benefits Cisco IOS software provides a foundation for meeting all the current and future networking requirements found in today s complex services driven business environments. Businesses rely heavily on generating income from their network infrastructure. Cisco IOS software has the broadest set of networking features primarily based on international standards allowing Cisco products to interoperate with disparate media and devices across an enterprise network. Most importantly Cisco IOS software enables corporations to deliver mission-critical applications seamlessly between various computing and networking systems. 1. Scalability The network infrastructure for every corporation must be flexible to meet all the current and future internetworking requirements. Cisco IOS software uses some proprietary but also adheres to international standards for congestion avoidance using scalable routing .

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