Nx-os And Cisco — Nexus Switching- Next-generation Data Center Architectures -repost- !free!

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Cisco’s development roadmap for NX-OS reveals where data center networking is heading: user wants a long, detailed article on NX-OS

NX-OS runs network protocols and services as independent, isolated processes within user space. Each protocol—such as OSPF, BGP, or LACP—runs in its own protected memory space. If a process experiences a critical error or crashes, it does not impact the rest of the system. The kernel isolates the failure, preventing a cascading system crash, while the infrastructure component automatically restarts the failed process without dropping data plane traffic. In-Service Software Upgrades (ISSU) search results have provided a good starting point