Solve Connectivity Complexity

Connectivity complexity accumulates when a network runs different operating systems on different platform tiers: a separate OS for core switching, another for access switching, another for campus, and another for WAN routing. Each OS has its own CLI syntax, its own software release track, its own bug set, and its own configuration model, creating a situation where network engineers must maintain proficiency across multiple vendor operating systems simultaneously, where automation scripts must handle the syntax differences between platforms, and where troubleshooting a problem that spans tiers requires switching between mental models and toolsets mid-investigation. The result is a network that is operationally more expensive per port than an equivalent network built on a consistent operating system, even if the per-port hardware cost was lower at procurement time.

Arista EOS runs as a single binary image across the full range of Arista hardware (from the 7010X at 1/10/25G server access to the 7800R4 at 800G AI spine, from the CCS-720XPM campus PoE switch to the 7280R4 high-capacity WAN router) so that every platform in the network runs the same CLI, the same automation APIs, the same BGP and EVPN implementation, and the same LANZ streaming telemetry framework. UFT (Unified Forwarding Table) provides configurable allocation between MAC table capacity and IPv4 route table capacity on the same hardware: Mode 0 provides 136,000 MACs and 8,000 IPv4 routes for campus access workloads; Mode 4 provides 8,000 MACs and 128,000 IPv4 routes for data centre spine and routing workloads. The same hardware hardware adapts to different deployment roles through software configuration. The 7260X3 two-tier design scales to 27,648 10/25G servers; the 7700R4 non-blocking design scales to 4,608 800G hosts. CloudVision provides the network-wide management and telemetry layer across all EOS platforms, replacing the multiple vendor-specific management tools that a multi-OS network requires.