arista 7800R3 7816R3 vs cisco Nexus 9000 Nexus 9516
Side-by-side specifications from the vendors' own documents. The Arista 7816R3 is a 16-slot high-capacity modular datacenter core chassis switch delivering up to 460 Tbps of switching throughput in a 32U frame. The Cisco Nexus 9516 is a 16-slot modular datacenter chassis switch delivering massive port density and switching bandwidth for large cloud service provider and enterprise datacenter spine fabrics.
| arista 7800R3 7816R3 | cisco Nexus 9000 Nexus 9516 | |
|---|---|---|
| Brand | arista | cisco |
| Status | current | current |
| Released | Oct 2019 | Jun 2014 |
| Form factor | modular chassis | modular chassis |
| Chassis slots | 16 | 16 |
| Line card slots | 16 payload line card slots | 16 payload line card slots |
| Chassis height | 32U rack mount | 21U rack mount |
| Switching capacity | Up to 460 Tbps system bandwidth | Up to 230.4 Tbps |
| Forwarding rate | Up to 138 Bpps | — |
| Port scale | Up to 576x 400GbE QSFP-DD or 2,304x 100GbE ports | — |
| Power supplies | Up to 16 hot-swappable 3000W power supplies | — |
| Supervisor slots | — | 2 redundant supervisor engine slots |
| Fabric modules | — | Up to 6 rear fabric modules |
| Max ports | — | Up to 1024 100G ports or 256 400G ports in a single chassis |
| Operating modes | — | NX-OS standalone spine or Cisco ACI spine |
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