7260X3 Series | Platform Overview

Maximum Flexibility for Scale Out Network Designs

Scale out network designs enable solutions to start small and evolve over time. A simple two-way design can grow as far as 128-way

without signi cant changes to the architecture. The Arista 7260X3 include enhancements for exible scale-out designs:

• 128-way ECMP and 64-way MLAG to provide scalable designs and balance tra c evenly across large scale 2 tier leaf-spine designs

• Equal and Unequal Cost Multi-Pathing (ECMP and UCMP) for exible tra c balancing in large scale multi-tier topologies

• Custom hash algorithms for e cient hashing, persistent hashing and custom lookups for tunneled protocols

• Flexible allocation of L2 and L3 forwarding table resources for more design choice

• Wide choice of dense 10G/25G/40G/100G interfaces for multi-speed exibility

• Support for standards based IEEE 25GbE for simple and cost e ective migration from 10G and 40G to 25G and 100G

• VXLAN routing, bridging and gateway capability for physical to virtualization communication in next generation data center designs

• DANZ, sFlow and multi-port mirroring to detect micro-burst congestion and provide network wide visibility and monitoring

• Hitless speed changes from 10G to 100G to eliminate down-time when implementing speed changes

Uni ed Forwarding Table

Cloud network scalability is directly impacted by the size of a switches forwarding tables. In many systems a 'one size ts all' approach is

adopted using discrete xed size tables for each of the common types of forwarding entry. The Arista 7260X3 leverage a common

Uni ed Forwarding Table for the L2 MAC, L3 Routing, L3 Host and IP Multicast forwarding entries, which can be partitioned per entry

type. The ideal size of each partition varies depending on the network deployment scenario. The exibility of the UFT coupled with the

range of pre-de ned con guration pro les available on the 7260X3 ensures optimal resource allocation for all network topologies and

network virtualization technologies.

Dynamic Load Balancing (DLB) *

Traditional hash-based load balancing algorithms can result in link and path allocations with short term imbalances and under

utilization of aggregate capacity. This is aggravated further in modern data centers with high tra c loads, varied ow duration, mixed

packet sizes and micro-bursts. DLB enhancements to load balancing consider the real time load on links and dynamically assign new

and existing ows to the best link. When imbalances are detected active ows and new ows are allocated to the least loaded paths to

reduce the possibility of drops. Supported with any combination of ECMP and LAG/MLAG, DLB delivers higher throughout with

enhanced load distribution while o ering the user an open implementation.

Advanced Event Management (AEM)

Simplifying the overall operations, AEM provides the tools to customize alerts and actions. AEM is a powerful and exible set of tools to

automate tasks and customize the behavior of EOS and the operation of the overall data center switching infrastructure. AEM allows

operators to fully utilize the intelligence within EOS to respond to real-time events, automate routine tasks, and automate actions based

on changing network conditions.

Virtualization

Supporting next-generation virtualized data centers requires tight integration with orchestration tools and emerging encapsulation

technologies such as VXLAN. The 7260X3 build on the valuable tools already provided by the Arista VM Tracer suite to integrate directly

into encapsulated environments. O ering a wire-speed gateway between VXLAN and traditional L2/3 environments, they make

integration of non-VXLAN aware devices including servers, rewalls and load-balancers seamless and provide the ability to leverage

VXLAN as a standards based L2 extension technology for non-MPLS environments.

Precise Data Analysis

Arista Latency Analyzer (LANZ) is an integrated feature of EOS. LANZ provides precise real-time monitoring of micro-burst and

congestion events before they impact applications, with the ability to identify the sources and capture a ected tra c for analysis.

Advanced analytics are provided with features like bu er monitoring with con gurable thresholds, in-band path and latency

monitoring, event driven trace packets and granular time stamping.

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. The system clock can be synchronized using IEEE 1588 PTP.

* Not currently supported in EOS