Low latency and jitter for all packets sizes and traffic types
Dynamic buffer allocation
Data Center Optimized Design
1+1 redundant & hot-swappable power
N+1 redundant & hot-swappable fans
Front-to-rear or rear-to-front fans
Typical power consumption 6W/port
Robust CPU Subsystem
Dual-core x86 CPU
4GB DRAM
2GB Flash
Full Kernel VM Support
Precise clock option
Embedded Application Switch Subsystem
FPGA subsystem for custom embedded applications
Dedicated memory and PCIe connectivity
Natively integrated with EOS instrumentation and operations
Create your own, or install 3rd party apps
Built-in Solid State Storage
50GB Solid State Drive
Store additional applications and virtual machines
Store logs and data captures
Leverage linux tools with no limitations
Advanced Provisioning & Monitoring
Zero Touch Provisioning (ZTP)
Latency Analyzer (LANZ)
VMTracer
sFlow
Arista Extensible Operating System
Single binary image for all products
Fine-grained truly modular network OS
Stateful Fault Containment (SFC)
Stateful Fault Repair (SFR)
Access to Linux tools
Extensible Platform
Overview
The Arista 7124FX Application Switch is a high performance, ultra-low latency embedded application switch. Based on the award winning Arista 7124SX, the 7124FX adds an inline programmable subsystem that is directly integrated with the forwarding plane. The 7124FX offers 24 1/10GbE wirespeed ports in a compact and power efficient 1RU chassis. The 16 standard front panel ports accommodate the full range of 10GbE SFP+ and GbE SFP options, allowing for maximum flexibility and deployment options. The 8 FX ports are directly connected to the user programmable subsystem, providing a flexible and open platform for custom and 3rd party embedded applications.
The integrated subsystem provides a unique capability to run latency sensitive and mission critical applications directly in the switch improving performance and determinism, while reducing overall latency and costs. A built in SSD is included for advanced logging, data captures and supporting embedded applications.
Arista 7124FX: 24-port Application Switch
Application Switch Programmability
The Application Switch subsystem includes an advanced FPGA with 160Gbps of wire speed performance and 6.2Million Gates. It’s purpose built for inline programmability and customized forwarding. Potential applications include data stream processing, integrated compute and networking functions for high performance applications, content based forwarding, IDS, and many others. Customers may choose to develop their own logic based on the Arista development kit, offering the ultimate in flexibility and customization. For customers that prefer off-the-shelf applications, Arista partners will provide system integration support and “appliance” images for the Application Switch subsystem.
Features
Benefits
High Speed
Sub microsecond delivery of application processing handled entirely within the inline FX solution reducing total latency
Deterministic Latency
The proven ultra low latency solution provides deterministic latency even under load for processing critical traffic
Data Distribution
8 10GbE FX and 16 standard wirespeed interfaces allows for multiple sources and destinations per FX switch
Reduced Costs
A single FX switch can run multiple applications concurrently. Integration with an ultra low latency switch lowers power and footprint compared to server solutions
Scalability
24 10GbE interfaces allows connectivity to multiple inputs and outputs. Cascading ultra low latency switches provides additional scalability.
Ease of Integration
Scalability, performance and cost savings are realized through native integration with EOS and existing tools.
The Arista 7124FX is optimized to deliver industry-leading ultra-low latency, cut-through forwarding at sub-500 nanoseconds for both unicast and multicast traffic, on the standard interfaces, for all packet sizes. The latency does not change even when additional features such as L3 forwarding, L4 inspection, ACL, QoS, Multicast or Port Mirroring functionality are enabled. The 7124FX also forwards packets in cut-through mode at 1GbE speeds at low latency for legacy connections.
Arista 7124FX Front View: 16 Standard and 8 FX SFP+ Ports Arista 7124FX Rear View: Front-to-rear airflow model Arista 7124FX Rear View: Rear-to-front airflow model
High Availability
The Arista 7124FX switch was designed for high availability from both a software and hardware perspective. Key high availability features include:
1+1 hot-swappable power supplies
Four N+1 hot-swappable fans
Live patching
Self healing software with Stateful Fault Repair (SFR)
Up to 16 10GbE ports per link aggregation group (LAG)
Multi-chassis LAG for active/active L2 multipathing
16-way ECMP routing for load balancing and redundancy
Arista EOS
The Arista 7124FX switches run the same Arista EOS software as all Arista products, simplifying network administration. 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 other Linux based tools can be run natively on the switch, with the powerful dual-core x86 CPU subsystem.
Provisioning Tools and Built-in Storage
The 7124FX switches offer advanced capabilities for network provisioning. The integrated 50GB SSD provides storage for application and system logging that allows for a whole new family of applications that can be run from the network itself. This includes having the switch be a PXE boot server, store syslogs for audit and compliance right on the switch, logging latency trends per queue, capturing and saving data packets via tcpdump and running Linux based services such as DHCP and Precision Time Protocol (PTP).
Latency Analyzer (LANZ)
The 7124FX offers advanced capabilities for latency and application analysis. Congestion points can be identified and tracked over time with granular precision, allowing a network operator to peer “inside” a burst event. LANZ streaming provides an open standards based mechanism for streaming queue depth metrics off the switch to an external collecting station, providing a valuable data point for operational and application insight.
Precision Time Options
The Arista 7124FX provides industry leading time synchronization and precision clock features. The FX subsystem includes an external connector for direct external synchronization to PPS or IRIG time sources. Additionally an integrated high-accuracy clock is available on the CPU subsystem to provide an accurate pulse for CPU based applications and logging LANZ data. Both systems can work in conjunction to provide nanosecond levels of accuracy for the most sensitive and precise timing applications.
Spare fan module for Arista 7124FX (front-to-rear airflow)
FAN-7000-R
Spare fan for Arista 7124FX (rear-to-front airflow)
PWR-460AC-F
Spare 460W AC Power supply for Arista 7124FX switches (front-to-rear airflow)
PWR-460AC-R
Spare 460W AC Power supply for Arista 7124FX switches (rear-to-front airflow)
PWR-460DC-F
Spare 460W DC power supply for Arista 7124FX switches (front-to-rear airflow)
PWR-460DC-R
Spare 460W DC power supply for Arista 7124FX switches (rear-to-front airflow)
LIC-VM-TRACER-1
VM Tracer License for 7048, 7120 and 7124 Switches
LIC-7124-E
Enhanced License for Arista 7100 24-port Switches (OSPF, BGP, PIM)
LIC-7124-Z
Network monitoring and provisioning feature set license for Arista 7100 24-port switches (ZTP, LANZ)
KIT-7000
Spare accessory kit for Arista 7124FX switches
DCS-7124FX-DEV1
Application Switch development and programming software, programming cable, 15hrs support
Warranty
The Arista 7124FX switch comes with a one-year limited hardware warranty, which covers parts, repair, or replacement with a 10 business day turn-around after the unit is received.
Service and Support
Support services including next business day and 4-hour advance hardware replacement are available. For service depot locations, please see: http://www.aristanetworks.com/en/service
Headquarters
5470 Great America Parkway Santa Clara, California 95054 408-547-5500
Support
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408-547-5502 866-476-0000
Sales
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408-547-5501 866-497-0000
Arista 7124FX Front View: 16 Standard and 8 FX SFP+ Ports 
Arista 7124FX Rear View: Front-to-rear airflow model 
Arista 7124FX Rear View: Rear-to-front airflow model