Arista-Networks-7100-Series-Data-Center-SwitchThe Arista 7100 Series of Datacenter Ethernet switches feature the industry’s highest density 10 Gigabit Ethernet switching solution and the first with an extensible modular network operating system. With breakthrough price-performance, the Arista 7100 Series enables 10 Gigabit Ethernet to be deployed everywhere in the data center, which can significantly improve server utilization and consequently data center power efficiency.

Additional highlights include the following:

High-Performance, Low Latency 10 Gigabit Ethernet Switching

  • Layer 2/3/4 switching up to 960 Gbps and 720 Mpps
  • As low as 500 nanosecond latency at all packet sizes

Arista EOS™

  • Extensible operating system customizable to customer needs
  • Fine-grain modular protected memory architecture
  • Access to Linux tools

High Availability

  • In-service-software-upgrades (ISSU)
  • Self-healing stateful fault repair (SFR)
  • Hot swappable, redundant power supplies and fans

Deployment Flexibility

  • All ports support a wide selection of 10GbE or GbE PHYs
  • Front-to-rear and reversible airflow options for flexible mounting

Datacenter Optimized

  • 1 rack unit (RU) for 24 or 48-port models
  • Power efficient

Cloud Leaf and Spine Network Design

Arista-Networks-7100-Series-Network-DesignIn the data center, there is an architectural migration to two-tiered cloud networking designs. The main building blocks are Cloud Leaves (CL) and Cloud Spines (CS). Cloud Spines forward traffic along optimal paths between nodes at layer 2 or layer 3 while Cloud Leaves control the flow of traffic between servers.

Predictable Latency and Multicast

The ultra-low latency characteristics of the Arista 7100 Series are consistent regardless of packet size and port speed, which means customers can reap the benefits of industry leading latency at 1 Gigabit speeds in addition to 10 Gigabit speeds. The 7100 Series latency is also predictable with little variance in environments with random packet sizes which is key to improving and maintaining application performance and server utilization.

Multicast and broadcast throughput is also very consistent at all packet sizes, maintaining line rate performance with no packet drops. This means that multimedia applications such as content delivery and video conferencing can be used in the network in a reliable and effective way.

High Availability

The Arista 7100 Series was designed for high availability from both a software and hardware perspective. Key high availability features include:

  • Two 1+1 hot-swappable independent power supplies
  • Five N+1 hot-swappable independent fans
  • Dual management ports
  • In-Service Software Upgrades (ISSU)
  • Self healing software with Stateful Fault Repair (SFR)
  • Up to 16 10GbE ports per link aggregation group (LAG)
  • ECMP routing for load balancing and redundant fail over

Target Positioning

The Arista 7100S Switches are positioned for a variety of places in the network including:

  • Top-of-Rack Server Aggregation
  • Blade Server Aggregation
  • Network Spine and Aggregation
  • HPC Cluster Interconnects
  • Storage Access
  • Cloud Networking Interconnects

10 Gigabit Ethernet is becoming the interconnect of choice in data centers of all sizes providing key improvements in terms of bandwidth, latency, scalability, reliability and application performance. The Arista 7100 Series enables a seamless migration path from existing Gigabit Ethernet-based servers to 10 Gigabit Ethernet-based high-performance servers while further enabling the transition to virtualized environments.

Model Comparison


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