7358X4 Series | Platform Overview

High Availability

The Arista 7358X4 are optimized for cloud networking operations and maintenance with system wide monitoring of all hardware and

software components, simple serviceability and provisioning for ease of maintenance and system expansion. The 7358X4 supports

simple replacement of all components including the supervisor, switch card and interface modules, power supplies and fans. The 7358X

Series o ers power and cooling high availability and N+1 redundancy. The switch card, power supplies and fans are rear removable

ensuring no disruption to either the interface modules or network cabling.

The Arista 7358X4 series switches were designed for high availability from both a software and hardware perspective. Key high

availability features include:

• Hot-swap of all interface modules

• Four N+N hot-swappable power supplies

• Five high performance N+1 hot-swap fans

• Color coded PSU’s and fans

• Live software patching for zero downtime maintenance

• Self healing software with Stateful Fault Repair (SFR)

• Smart System Upgrade (SSU) to simplify software upgrades *

• Up to 128 ports per link aggregation group

• Multi-chassis LAG for active/active L2 multi-pathing

• 128-way ECMP routing for load balancing and redundancy

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 7358X4 provides a consistent architecture with the 7050X4 Series and a

choice of either 100G QSFP, 400G OSFP and QSFP-DD interfaces, providing investment protection and future proof migration from 100G

to 400G optimized for large scale networks. They include several enhancements for cloud leaf-spine data center designs:

• Wide choice of optics and cables for multi-speed exibility including 10G, 25G, 40G, 50G, 100G, 200G and 400G

• 128-way ECMP and 64-way MLAG for scalable designs and to balance tra c evenly across large scale multi-tier designs

• Enhanced ECMP Hashing and Load Balancing consider real-time loads and dynamically assign new and existing ows to the best link

to improve performance

• Support for standards based IEEE 100GbE for simple and cost e ective migration from to 100G and 400G

• Advanced Multipathing improves congestion management by rebalancing ows in large scale cloud environments under load

• Hitless speed changes to eliminate down-time when implementing changes

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

• Flow aware detector to identify large ows and selectively allow marking and queue assignment to optimize tra c forwarding

Enhanced Features for High Performance Networks

The Arista 7358X4 Series delivers a suite of advanced tra c control and monitoring features to improve the agility of modern high

performance environments, with solutions for data monitoring, precise timing and virtualization.

Automating the data center enables customers to dynamically provision computing resources in the most e cient manner while also

meeting business needs by maintaining service level agreements (SLAs). Arista EOS automates complex IT work ows and simpli es

network operations while reducing or even eliminating downtime. Arista EOS rich automation capabilities not only reduce the human

error element in network operations but also enable IT operators to make the network work the way they want.

Flexible Forwarding Table

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 7358X4 leverage exible

forwarding tables for the L2 MAC, L3 Routing, L3 Host and IP Multicast forwarding entries, which can be exibly allocated per entry type.

The ideal size of each partition varies depending on the network deployment scenario. The exibility of the forwarding table coupled

with the range of pre-de ned pro les available on the 7358X4 ensures optimal resource allocation for all network topologies and

network virtualization technologies.