The DCS-7504N-CH is the bare Arista 7500R3/7500R modular chassis, providing 4 line card slots, 2 supervisor slots and 6 fabric module slots in a 7 RU footprint. It is ordered without power supplies, fabric modules or supervisors so an existing estate can be rebuilt to a specific configuration.
Key Specifications
Line card slots: 4
Supervisor slots: 2
Fabric module slots: 6
Power supply slots: 4
Rack units: 7
Maximum throughput: 76.8 Tbps / 16 Bpps
Maximum power consumption: 4,827 W
Weight (chassis only): 76.5 lbs (34.7 kg)
Dimensions (HxWxD): 12.25 x 17.3 x 31.3 in (31.2 x 44.1 x 79.5 cm)
Weight (full system): 222 lbs (101 kg)
Maximum Port Density
With appropriate line cards, cables and transceivers, and subject to EOS scale support, the DCS-7504N-CH supports up to: 768 x 10GbE, 768 x 25GbE, 144 x 40GbE, 768 x 50GbE, 384 x 100GbE, 96 x 400GbE.
Fully Scheduled Lossless Architecture
The Arista 7500 platform is a purpose-built multi-chip system with end-to-end scheduling: a cell-based fabric sprays uniform cells across all fabric links, Virtual Output Queues eliminate head-of-line blocking, distributed credit scheduling keeps every egress port independent, and deep buffers absorb in-cast and bursts without packet loss – so a fully populated chassis behaves like a single, internally lossless switching chip. All models run Arista EOS.
Deployment Scenarios
Chassis-only refresh: reuse existing line cards, supervisors and power supplies while replacing the chassis itself
Spares and cold standby: keep a bare chassis on the shelf for rapid rebuild after a hardware failure
Staged build-out: populate slots over time as capacity demand grows – all modules are hot-insertable field-replaceable units
Lab and staging environments: a lower-cost route to a production-identical topology
Frequently Asked Questions
How many line cards does the DCS-7504N-CH hold?
The DCS-7504N-CH provides 4 line card slots, 2 supervisor slots and 6 fabric module slots.
Does the DCS-7504N-CH include power supplies or modules?
No. This is the bare chassis. Power supplies, fabric modules, supervisors and line cards are ordered separately – or choose a factory bundle configuration.
What airflow does the DCS-7504N-CH use?
Front-to-rear: air flows from the switch port side to the fan side.
Is the refurbished DCS-7504N-CH tested before shipping?
Yes. BrightStar Systems inspects and tests every unit on original-spec firmware, performs a factory reset and configuration wipe, and backs it with warranty (1 year end-user / 90 days reseller).
BrightStar Systems supplies professionally tested refurbished Arista 7500 Series hardware. Every unit is inspected, tested on original-spec firmware, factory reset, and configuration wiped before shipment, and backed by our standard warranty. Modular systems and line cards of this class are typically project-priced – request a quote for current availability and pricing.
SPECIFICATIONS
Model: DCS-7504N-CH
Platform: Arista 7500R3/7500R modular chassis (bare chassis, no modules)
