Arista Core Switching

IT teams that need to grow core and aggregation capacity without spreading management across more switches can use Arista Core Switching to keep a resilient, modular platform in place. The range lets capacity be added through line cards, so teams can expand chassis-based infrastructure while keeping operations centralised.

It suits data centres, shared production networks and controlled research estates where traffic, storage and application domains keep expanding. Larger chassis options help consolidate more links into one system, while compact versions support tighter spaces and controlled growth, reducing operational overhead and helping keep services responsive.

Arista Core Switching Quick Specs & Key Features

Modular chassis architecture: The 7304 and 7308 use supervisor, fabric and line-card slots, so capacity grows by adding modules rather than replacing the switch, which supports controlled expansion and lower operational overhead.
Deep-buffer routed core: The 7504R and 7508R provide a high-scale L2/L3 switching and routing design with deep buffering, so bursty replication, backup and interconnect traffic is handled with less congestion and improved workload fit.
Resilient single-system operation: A chassis-based model keeps switching, fabric and management in one platform, so aggregation and spine functions stay centralised with fewer fixed switches to run and improved availability.

Compact slot scaling: The 7304 offers four slots and the 7308 offers eight in the same operational model, so teams can match port growth to floor space and simplify deployment.
High-capacity fabric: The 7508R carries more line-card and fabric scale than the 7504R, so larger 10/25/40/100GbE domains can be consolidated into one chassis with easier scaling.
Sector-ready fit: These models suit data centres, finance, media, software development, telecoms, and energy and utilities, so buyers can align the platform to resilient aggregation, DCI and regulated core roles without changing network design.

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Find your ideal Arista Core Switching

Full technical specifications are available on each product page.

Model	Popularity	Deployment	Target Organisation Size	Primary Use Case	Access Ports	Port Configuration	Maximum Port Speed	PoE Budget (W)	Maximum Switching Capacity (Gbps)	Stackable	Operating System / Management Platform
Arista 7308 Modular Data Centre Switch 8-Slot Chassis	★ ★ ★	Data Centre	Service Provider	Spine	—	—	400G	—	300000	—	—	View
Arista 7508R Modular Data Centre Switch 8-Slot Chassis	★ ★ ★	Data Centre	Service Provider	Spine	—	—	400G	—	460800	—	—	View
Arista 7304 Modular Data Centre Switch 4-Slot Chassis	★ ★ ★	Data Centre	Service Provider	Spine	—	—	400G	—	150000	—	—	View
Arista 7504R Modular Data Centre Switch 4-Slot Chassis	★ ★ ★	Data Centre	Service Provider	Spine	—	—	400G	—	230400	—	—	View

Arista Core Switching Deployment Scenarios and Industries

Data Centres

Data centre teams need a compact modular core or spine that can grow as leaf groups, storage fabrics and interconnect domains expand. Arista Core Switching supports chassis resilience and line-card growth in one system, helping teams add capacity without replacing fixed switches.

Media & Entertainment

Studios need shared aggregation for render, ingest, archive and remote production traffic, with capacity added as projects and departments grow. Arista Core Switching provides a resilient modular fabric that helps keep large file movement and site links on one managed platform.

Finance

Finance teams need controlled routing and aggregation for trading-support, analytics and regulated application domains, where changes must stay centralised and capacity must scale predictably. Arista Core Switching gives them a resilient chassis platform for managing these critical traffic paths.

Software Development

Platform teams need production-like modular networking for private-cloud, CI/CD and test estates, without spreading services across many fixed switch islands. Arista Core Switching supports shared high-speed infrastructure that can grow with lab and platform-engineering demand.

Telecoms

Telecoms teams need modular aggregation for NFV, MEC and packet-core validation, where interface needs change over time and traffic can be bursty. Arista Core Switching provides a contained chassis model for connecting many service domains and appliance clusters to one fabric.

Shop All Arista Core Switching Models

Browse our full range below, or contact our team for tailored configuration advice.

Designing & Supporting Arista Core Switching Solutions

Backed by decades of expertise in the IT sector, our specialists support every stage of your deployment — from initial selection through to long-term lifecycle management.

Tailored Arista Access Switching: Access layer switching must support far more than basic connectivity — user density, PoE, wireless growth, IoT devices, VLAN segmentation, and application traffic all place different demands on the network edge. We design Arista access-switching environments aligned with your real operational requirements, avoiding oversubscribed uplinks, inconsistent configurations, and performance bottlenecks as you scale.
Arista Core Switching & Data Centre Architecture: Growing environments can quickly expose core network limitations as east-west traffic, virtualisation, storage workloads, and application demands increase. We design resilient Arista core switching architectures built around throughput, redundancy, low-latency traffic handling, and long-term scalability — keeping high-performance enterprise and data centre environments stable under sustained load.
Deployment, Integration & Network Configuration: Switching deployment involves far more than racking hardware. We handle switch configuration, stack deployment, VLAN design, routing integration, migration planning, and interoperability validation across wireless, firewall, storage, and virtualisation environments — reducing deployment risk and minimising disruption during upgrades, expansions, and infrastructure refresh projects.

Network Visibility, Performance & Operational Efficiency: Poor visibility, inconsistent configuration, and inefficient traffic handling erode network reliability over time. We help improve segmentation, management visibility, and traffic optimisation across your Arista switching environment — delivering consistent, reliable performance during peak demand and day-to-day operations alike.
Scalability, Resilience & Lifecycle Planning: Network requirements rarely stay static. As your environment grows, we help plan for higher uplink speeds, additional switching capacity, improved redundancy, firmware strategy, and long-term lifecycle management — keeping your Arista infrastructure high-performing and future-ready.

Arista Core Switching FAQ

Need a different solution?

If these options aren’t the right fit for your environment, we provide a wide portfolio of product series and solutions that may better suit your infrastructure. Explore below, or speak to our team and we’ll help you find the right match.

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Whether you know exactly what you need or you’re still evaluating options, our team is available for a no-obligation conversation.