Arista 7500R3 Series

Arista 7500R3 Series Specifications

The Arista 7500R3 Series of modular switches deliver the industry’s highest performance with 230Tbps of system throughput to meet the needs of the largest scale data centers. With a choice of systems the 7500R Series provides four, eight or twelve line card modules, two supervisor modules, and six fabric modules. Designed for continuous operations and with system wide monitoring of hardware and software components, simple serviceability and provisioning to prevent single points of failure the hardware architecture supports high-availability with hot-swap of all components.

Arista 7500R3 Series Architecture

The Arista 7500R3 Series leverages a deep buffer virtual output queue (VOQ) architecture that is 100% efficient, eliminates head-of-line (HOL) blocking and virtually eliminates packet drops even in the most congested network scenarios. An advanced traffic scheduler fairly allocates bandwidth between all virtual output queues while accurately following queue disciplines including weighted fair queuing, fixed priority, or hybrid schemes. As a result, the Arista 7500R3 Series can handle the most demanding data center requirements with ease, including mixed traffic loads of real-time, multicast, and storage traffic while still delivering low latency.

7500R3 System Comparisons:

Available in a compact system design, as a choice of 12, 8 and 4 slot, the Arista 7500R3 Series enables a full range of wirespeed ports from 10G to 400G. It lowers total cost of ownership as it is designed to be efficient with power per port as low as 25W per 400G port which combined with front to rear cooling to optimize the data center environment produces the most reliable, dense and power efficient modular switch.

Arista 7500R3 Series

System Performance
	7512R3	7508R3	7504R3
Description	Delivers high density, low power non-blocking Ethernet switching system.	Delivers high density, low power non-blocking Ethernet switching system.	Optimum form-factor for many mid-size deployments.
Switching Capacity	230Tbps	153Tbps	76.8Tbps
Linecard Capacity	9.6 Tbps	9.6 Tbps	9.6 Tbps
10G Interfaces	2304	1536	768
25G Interfaces	2304	1536	768
40G Interfaces	432	288	144
50G Interfaces	2304	1536	768
100G Interfaces	432	288	144
400G Interfaces	288	192	96
Forwarding Rate	48 Bpps	32 Bpps	16 Bpps
Total Buffer	96GB	64GB	32GB
Rack Units	18	13	7
Airflow	Front to Rear	Front to Rear	Front to Rear

Note: Maximum density values based on per line card breakout with appropriate cables/transceivers and subject to EOS Scale support

The 7500R3 modular chassis can accommodate a combination of the 7500R line cards providing a rich choice of density and speed:

7500R3 Line Cards Comparison:

The 7500R3 Series offer a broad choice of line cards with a choice of speed and density options up to 36 ports of wire speed 100G and 40G, or 24 ports of 400G. A flexible 25G line card with integrated 400G QSFP-DD allows for 10G to 400G speeds on a single module. Every 400G interface supports a choice of speeds including 25G and 50G providing unparalleled flexibility and the ability to seamlessly transition data centers to the next generation of Ethernet performance.

	7500R3-24P	7500R3-24D	7500R3-36CQ	7500R3K-36CQ	7500R3K-48Y4D
Ports	24 400G OSFP	24 400G QSFP-DD	36 100G QSFP	36 100G QSFP	48 25G SFP and 4 400G QSFP-DD
Max 400G	24	24	-	-	4
Max 100G	96	96	36	36	16
Max 50G	192	192	72	72	32
Max 40G	24	24	36	36	4
Max 25G	192	192	96	96	80
Max 10G	192	192	96	96	80
Port Buffer	16GB	16GB	8GB	8GB	4GB
Switching Capacity	9.6 Tbps	9.6 Tbps	3.6 Tbps	3.6 Tbps	2.8Tbps
Forwarding Rate	4Bpps	4Bpps	2Bpps	2Bpps	1Bpps
Algorithmic ACLs	Yes	Yes	Yes	Yes	Yes
Accelerated sFlow	Yes	Yes	Yes	Yes	Yes

Combined with the highly modular, robust Extensible Operating System (EOS), a dynamic smart deep buffer architecture with virtual output queuing for lossless forwarding, low latency and wire speed performance, the Arista 7500R3 line cards enable scalable and high performance data center solutions.

Scalability:

Each 7500R3 Series line card delivers a consistent set of features supporting layer 2 and layer 3 data center designs with predictable and linear scaling. Arista's FlexRoute Engine enables full Internet routing coupled with support for a variety of IP/MPLS/VXLAN protocols.

¹ Undimensional scaling maxima with currently available MDB profiles. Available resources depend on user configuration.

Product Overview

• .7500R3 Quick Look
• .7500R3 Datasheet
• .7500R3 Architecture
• .R3 Innovations White Paper

Data Center Networking with EVPN

• .Multi-Tenant Multicast Services
• .Line-Rate Encryption with Arista’s TunnelSec
• .EVPN Gateway for Hierarchical Multi-domain EVPN and DCI
• .Multihoming Models for Resiliency
• .VXLAN: Scaling Data Center Designs

Literature

• .FlexRoute
• .Big Buffers for Big Data Applications
• .Arista EOS Precision Data Analysis with DANZ
• .IP Storage Next Gen Platforms White Paper
• .Routing Architecture Transformations & Use cases
• .VXLAN: Scaling Data Center Designs
• .Scale Out Designs
• .Universal Cloud Network
• .100G Transceivers and Cables: Q&A
• .Leviton - 400G cabling
• .Arista Networks: Powering Swifter 400G Adoption Across Cloud and Enterprise Environments
• .EANTC 2019 EVPN and SR Interoperability Report