Arista Networks Switch Quick Look Datasheet
Quick Look Datasheet

Arista 7150 Series Network Switch

Low Latency data center switches
Arista 7150 Series Network Switch

High Performance

  • 7150S-24: 24x1/10GbE
  • 7150S-52: 52x1/10GbE
  • 7150S-64: 48x1/10GbE and 4 x 10/40GbE
  • 7150SC-24: 24x1/10GbE
  • 7150SC-64: 48x1/10GbE and 4 x 10/40GbE
  • Up to 1.28 terabits per second
  • Up to 960 million packets per second
  • Wire speed L2 and L3 forwarding

Ultra Low Latency

  • From 350 nanosecond latency
  • Same latency for L2 and L3
  • Low latency at 1,10 and 40GbE
  • Low jitter for unicast and multicast
  • Dynamic buffer allocation

Advanced Provisioning & Monitoring

  • CloudVision
  • LANZ Microburst Analysis
  • IEEE 1588 PTP high precision clock option
  • Ultra Low Latency NAT, MNAT
  • DANZ Advanced Mirroring & TAP Aggregation for improved visibility
  • sFlow (RFC3176)
  • Zero Touch Provisioning (ZTP)
  • VMTracer
  • Self-configure/recover from USB

Data Center Optimized Design

  • Typical power draw from 3.5W/port
  • 1+1 redundant & hot-swappable power
  • N+1 redundant & hot-swappable fans
  • Front-to-rear or rear-to-front fans

Resilient Control Plane

  • Multi-core x86 CPU
  • 4GB DRAM
  • 2 (S) or 4GB (SC) Flash
  • User applications can run in a VM
  • SC models are ROHS compliant

Built-in Solid State Storage

  • Solid State Drive options (*D models)
  • Store logs and data captures
  • Leverage linux tools with no limitations

Arista Extensible Operating System

  • Single binary image
  • Fine-grained truly modular network OS
  • Stateful Fault Containment (SFC)
  • Stateful Fault Repair (SFR)
  • Full access to Linux shell and tools
  • Extensible platform - bash, python, C++

7150 Series Introduction – 1/10 GbE SFP Ultra Low Latency Switch

The Arista 7150 series represents the industry's leading ultra low latency 1RU 1/10/40GbE layer 2/3/4 wire speed switch family, offering a unique combination of performance, advanced functionality and extensive onboard resources. The 7150 Series includes the 7150S and the 7150SC models. The 7150SC variants are equipped with a higher performance control plane and meet newer ROHS requirements.***

Designed to suit the requirements of demanding environments such as ultra low latency financial ECNs, HPC clusters and cloud data centers, the class-leading deterministic latency from 350ns is coupled with a set of advanced tools for monitoring and controlling mission critical environments.
Feature Benefit
Wire-speed Low Latency Network Address Translation Reduce NAT latency by 10s of microseconds vs traditional high latency solutions
IEEE 1588 Precision Time Protocol (Boundary and Transparent modes) Provides hardware-based timing for accurate in-band time distribution with nanosecond accuracy
Integrated High Precision Oscillator Ensures highly accurate timing with extended holdover
Latency and Application Analysis LANZ Detect, capture, stream microbursts and transient congestion at microsecond rates
Advanced Multi-port Mirroring Suite Avoid costly SPAN/TAP aggregators with in-switch capturing, filtering and time-stamping
Wire-speed VXLAN Gateway Enabling next generation Data Center virtualization
AgilePorts Adapt from 10G to 40G without costly upgrades

Arista EOS

Arista EOS is a modular switch operating system with a unique state sharing architecture that cleanly separates switch state from protocol processing and application logic. Built on top of a standard Linux kernel, all EOS processes run in their own protected memory space and exchange state through an in-memory database. This multi-process state sharing architecture provides the foundation for in-service-software updates and self-healing resiliency.

With Arista EOS, advanced monitoring and automation capabilities such as Zero Touch Provisioning, VMTracer and Linux based tools can be run natively on the switch with the powerful dual-core x86 CPU subsystem.

Deterministic, Ultra Low Latency

The Arista 7150 switch is optimized for ultra low latency, cut-through forwarding. It offers the same low latency characteristics at all packet sizes. The latency remains consistent even when features such as L3, ACL, QoS, Multicast, Port Mirroring, LANZ+ and Time-Stamping are enabled. The 7150S also supports cut-through mode at 100Mb and 1GbE speeds at low latency for legacy connections.

Low Latency Network Switch

Arista 7150 family 10G latency profile

Dynamic Buffer Allocation

The Arista 7150 forwards packets at an ultra low latency of 350 nanoseconds from any port to any other port. However when a microburst or transient in-cast condition causes contention of an egress interface, packets must be buffered. The 7150’s global packet memory is dynamically allocated on demand to congested interfaces, avoiding packet loss.

Enhanced Features for High Performance Networks

The Arista 7150 delivers a suite of advanced traffic control and network monitoring features to improve the agility of modern high performance environments, with solutions for network address translation, precise timing and next-generation virtualization.

Monitoring, Analysis and Forensics

Arista’s enhanced LANZ microburst and latency analysis enables the monitor of even the slightest transient congestion at microsecond granularity. Data affected by congestion is captured and verbose logs are written locally and streamed in real time to external tools over an open protocol buffer encoded format. Event Monitoring complements LANZ with protocol-layer captures, providing a forensic history of network adds, moves and changes. The combination of Arista’s Advanced Mirroring Suite and the ability to time-stamp every packet in hardware with features such as sFlow, delivers unmatched instrumentation of network behavior and performance. Optimized to support pro-active capacity planning and pre-empt issues, the 7150 is uniquely equipped to root-cause network anomalies.

Precision Timing (IEEE 1588)

Arista’s hardware derived Precision Time Protocol solution provides a robust mechanism for accurate in-band time distribution in high performance environments. Offering both Boundary and Transparent Clock modes, the versatile 7150 enables timing networks to scale independently of Grand Master capacity, maintaining accuracy approaching that of a dedicated out-of-band platform. The 7150 Series employs a high precision OCXO for consistent timekeeping. This clock module ensures exceptional determinism in timing operations.


Supporting next-generation virtualized data centers requires tight integration with orchestration tools and emerging encapsulation technologies such as VXLAN and NVGRE. The 7150S builds on the valuable tools already provided by the Arista VMTracer suite to integrate directly into encapsulated environments. Offering a true, wire-speed, low latency gateway between VXLAN and traditional L2/3 environments, the 7150S makes integration of non-VXLAN aware devices including servers, firewalls and load-balancers, seamless and provides the ability to leverage VXLAN as a standards based L2 extension technology for non-MPLS environments.

AgilePorts Enable Flexible Deployment

AgilePorts deliver complete flexibility in connectivity - each SFP+ interface is capable of supporting 100M-10G over a variety of media, including DWDM with distances up to 80km. The AgilePorts feature also enables groups of adjacent SFP+ ports to be configured for 40Gb operation using 10Gb transceivers and cables providing maximum port flexibility and a seamless migration from 10Gb to 40Gb.

High Availability

The Arista 7150 switches were designed for high availability and simple provisioning from both a software and hardware perspective.

Key Features Include:
10g Low Latency Network Switch
  • 1+1 hot-swap power supplies and four N+1 hot-swap fans
  • Color coded PSUs and fans - common to Arista 1RU devices
  • EOS Zero Touch Provisioning (ZTP)
  • Self healing software with Stateful Fault Repair (SFR)
  • Live software patching
  • 32-way MLAG and ECMP routing for all-active L2 and L3

*** Material changes were made to the new 7150SC models to ensure RoHS compliance as per Commission Delegated Directive (EU) 2019/172 - of 16 November 2018. As of February 2020 the 7150S models will no longer be available for sale in RoHS countries. Customers in RoHS countries should transition to the 7150SC models on or before February 2020.

Copyright © 2017 Arista Networks, Inc. All rights reserved. CloudVision, and EOS are registered trademarks and Arista Networks is a trademark of Arista Networks, Inc. All other company names are trademarks of their respective holders. Information in this document is subject to change without notice. Certain features may not yet be available. Arista Networks, Inc. assumes no responsibility for any errors that may appear in this document.     11-0019-01