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Cisco Networking Simplified, Second Edition by Paul Della Maggiora, Neil Anderson, Jim Doherty

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Part IV. Network Availability

Network Availability

One of the most important aspects of networking is keeping the network running—at all times, under any circumstances, even during times of excessive use or stress. Actually, especially during times of excessive use or stress. Why? Because a downed network can mean millions of dollars per minute in lost revenue. Consider a large retailer with 3000 stores that processes hundreds of credit card transactions per minute. If it cannot accept credit card purchases, it delays or loses sales.

The first section explores the importance and best practices of network availability and resilience, starting with high availability. It’s ...

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