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NX-OS and Cisco Nexus Switching: Next-Generation Data Center Architectures by David Jansen - CCIE No. 5952, Ron Fuller - CCIE No. 5851, Kevin Corbin - CCIE No. 11577

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Chapter 6. High Availability

This chapter covers the following topics focused on high availability:

• Physical Redundancy

• Generic Online Diagnostics

• NX-OS High Availability Architecture

• Process Modularity

• Process Restart

• Stateful Switchover

• Nonstop Forwarding

• In-Service Software Upgrades (ISSU)

Requirements in the data center are rapidly changing—where there were once generous maintenance windows, now there are none. Best effort delivery of service has been replaced with strict Service Level Agreements (SLA), sometimes with financial penalties incurred to lines of business or customers. This chapter introduces various hardware and software components that make the Nexus 7000 a highly available platform to meet these changing data ...

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