Why NX-OS?
The most significant architectural shift in the Nexus portfolio is the move away from the Spanning Tree Protocol (STP) as the primary loop-prevention mechanism. Next-Gen architectures utilize : Why NX-OS
For over a decade, Cisco Systems has maintained two parallel networking operating systems: IOS (Internetwork Operating System) for enterprise access/aggregation and NX-OS for data center environments. Originally derived from the SAN-OS operating system for MDS Fibre Channel switches, NX-OS was built from the ground up to address the unique challenges of data centers: , high availability , manageability , and programmability . and programmability .