Arista EOS : Key Features

The Arista 7000 Family runs EOS, Arista’s Extensible Operating System. Built with a modular software design with a unique multi-process, state sharing architecture, EOS offers open access to Linux tools, extensible network services, and allows easy integration with third-party applications. A first in the networking industry, EOS provides a single binary image across all Arista networking platforms and delivers mission-critical data center features such as Stateful Fault Repair and In-Service Software Upgrades. Quick highlights of key Arista EOS features are provided below:

  • Precision Data Analysis with Arista Data Analyzer (DANZ)

Arista Data ANalyZer (DANZ) is an integrated feature set of Arista's Extensible Operating System and is currently available on Arista Networks 7150-series switches. DANZ provides a solution to monitoring and visibility challenges at 10/40Gbps and higher with unmatched price-performance and precision.

  • Advanced Event Management (AEM)

Advanced Event Management (AEM), a sub-system of Arista EOS, the world's most advanced network operating system, is a powerful and flexible tool to automate tasks and customize the behavior of EOS and the operation of the overall data center switching infrastructure.

  • Multi-Chassis Link Aggregation (MLAG)

MLAG enables the network administrator to use all interconnects in an active/active, Layer-2 topology. MLAG and Spanning Tree (STP) can work together, with STP only kicking in during a misconfiguration, while ports remain active/active during normal operation. This enables an increase in cross-sectional bandwidth and faster failover times measured in the 100s of milliseconds for link or nodal failure.

  • Control Plane Protection (CPP)

Arista switches are equipped with a robust dual-core processor to handle all control plane functions. However, the control plane should be protected from un-authorized access or attacks. With CPP, you can prevent unauthorized access and block any attacks or worms that otherwise can impact system performance.

  • Data Center Bridging

Arista EOS includes support for Per-priority Flow Control (PFC) and Data Center Bridging Exchange (DCBX). By using LLDP extensions to negotiate various classes of storage traffic, Arista EOS continues to add IEEE standards based solutions. PFC and DCBX allow Arista switches to separate data and storage traffic, providing a lossless fabric for optimal performance.

  • Rich Layer-3 Features

Arista switches can forward both at Layer 2 and Layer 3 at wirespeed. Arista EOS includes support for OSPF, BGP, PIM-SM and VRRP thus allowing for scalable data center designs using dynamic Layer 3 protocols. The Layer 3 feature set, combined with multicast and ACL support is especially well suited for low latency, financial exchange connectivity.

  • Linux Based Extensions

In addition to Arista EOS features, users can take full advantage of the underlying Linux kernel. Extensions such as DHCP server, Precision Time Protocol (PTP) Server can be added in just a few minutes. All CLI command output can also be piped to tools such as grep, egrep or awk. A full Layer 2 and Layer 3 feature set, coupled with Linux extensions make Arista EOS a unique platform.

A complete list of supported features can be accessed at the following link:

EOS Supported Features