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

The era of fragile, manually-configured, STP-blocked networks is over. are the tools for building a resilient, high-speed, and programmable future.

The following is a narrative centered on the technological shift described in the authoritative guide, The era of fragile

| Feature | Legacy IOS | Cisco NX-OS | | :--- | :--- | :--- | | | Monolithic | Modular processes | | High Availability | Restart entire system | Process restart / Stateful failover | | Configuration | Global commit | Atomic (confirmed) transactions | | Scale | Thousands of routes | Millions of routes & MAC entries | | Licensing | Feature-based tiers | Smart Licensing / Feature packs | The era of fragile