The 7280R4-32PE features 25.6 Tbps switching capacity and supports 32x 800 GbE ports with Octal Small Form-Factor Pluggable (OSFP) or Quad Small Form-Factor Pluggable – Double Density (QSFP-DD) optical uplinks. It’s targeted at customers that need to support AI/ML workloads and routing-intensive edge use cases, Arista stated. It supports 25% lower power per Gbps compared to the prior generation, according to Arista.
A second version, the 7280R4-64QC-10PE, is aimed at dense, deep buffer-requiring workloads in data centers with 100G/800G requirements. The box supports 64x 100 GbE and 10x 800 GbE OSFP in addition to 4x 1/10/25 GbE for management or additional low-speed interfaces, Arista started. The box promises 20% lower power requirement per Gbps over the prior generation of the box, Arista stated.
At the high end, the new 7800R4 is the vendor’s latest flagship networking box capable of supporting 36 ports of 800GbE OSFP and QSFP-DD line cards in 4, 8, 12, and 16-slot chassis configurations. The box offers a high radix capacity – meaning it can be fully loaded with line card and support 576 physical 800 Gigabit Ethernet ports or 1,152 400GbE ports, Arista stated.
In addition, the 7800R supports a new 3.2 TbpsEthernet line card called HyperPort that supports 4 800G channels to tie together widely dispersed data centers via a technique Arista calls “scale across.” It’s designed to scale across buildings in the same metropolitan region or across sites in different cities or countries. This routed Data Center Interconnect technology that can extend AI clusters over Metro or long-haul WAN links, according to Arista.
“Building on the flexible Extensible Operating System (EOS) software foundation [which runs across all Arista networking gear] and deep buffering, HyperPort delivers up to 44% faster job completion time (JCT) for high-bandwidth AI flows via a single high-speed port, compared to alternate solutions that load-balance traffic across multiple 800G ports,” Gibbs stated in a blog post he co-wrote with Martin Hull, vice president and general manager, cloud and AI platforms, at Arista.
Arista envisions the 7800R as the heart of some very large networks – from the central spine box in large-scale enterprise, cloud hyperscaler and service provider networks, to AI Ethernet fabrics, to cloud data centers, to campus or metro aggregation sites.
