What port configuration and speeds does the DCS-7300X-32Q-LC support?

Features 32 QSFP+ ports for 40GbE native or 128x10GbE via breakout cables with copper, multimode, or single-mode optics. Delivers 1.92Bpps forwarding and 24MB buffers per port group for non-blocking wire-speed across all ports in 7300X chassis.

What is the power consumption of this line card?

Typical power draw is 219W, maximum 372W at 25C with 50% port load. Efficiency under 12W per 40G port supports dense deployments in DCS-7304/7308 chassis without exceeding cooling limits.

Which chassis are compatible with DCS-7300X-32Q-LC?

Designed for DCS-7304 (4 slots) and DCS-7308 (8 slots) chassis, enabling up to 128/256x40GbE ports. Requires dual supervisors and fabric modules for full 10/20Tbps system throughput.

What advanced features improve data center performance?

Includes VoQ buffering, LANZ microburst detection, sFlow, and CloudVision for monitoring. Supports EVPN/VXLAN overlays, MP-BGP, IS-IS routing for scalable multi-tenant fabrics with zero-touch provisioning.

How does it handle high-density 10GbE deployments?

Each QSFP+ breaks out to 4x10GbE SFP+ equivalents, scaling to 128x10G per card. Jumbo frames up to 9216 bytes and IGMP snooping optimize for server ToR connectivity in leaf-spine topologies.

What environmental specs does it meet?

Operates 0-40C with front-to-back or reversible airflow. Meets NEBS Level 3 vibration/shock, fully RoHS compliant for enterprise data center reliability.

DCS-7300X-32Q-LC - Arista DCS-7300X-32Q-LC 32x40G 1.92Bpps Line Card

Name: Arista DCS-7300X-32Q-LC 32x40G 1.92Bpps Line Card
Brand: Arista
SKU: DCS-7300X-32Q-LC
Price: 435 USD
Availability: InStock

DCS-7300X-32Q-LC - Arista DCS-7300X-32Q-LC 32x40G 1.92Bpps Line Card | US IT Hardware

Product overview

The Arista DCS-7300X-32Q-LC is a modular line card for the 7300X Series chassis, delivering 32 QSFP+ ports at 40GbE speeds or breakout to 128x10GbE, with 1.92Bpps forwarding rate and 24MB dynamic buffer per port group for microburst handling. Supporting advanced Layer 2/3 features like OSPF, BGP, MPLS, VXLAN, and EVPN, it enables low-latency east-west traffic in large-scale data centers. Ideal for spine/leaf architectures, cloud interconnects, and HPC environments, the card offers VoQ architecture for congestion-free performance, reversible airflow options, and power efficiency under 12W per 40G port. Deploy in DCS-7304/7308 chassis for up to 256x40GbE density, with CloudVision integration for provisioning and monitoring. Comprehensive optics support includes multimode, single-mode, and copper cables for flexible 10/40G connectivity.

32 QSFP+ ports support 40GbE or 128x10GbE breakouts.
1.92Bpps forwarding rate enables wire-speed performance.
24MB dynamic buffer per port group handles microbursts.
Under 12W per 40G port for power-efficient operation.
VoQ architecture ensures low-latency congestion management.
Supports BGP, OSPF, MPLS, VXLAN for L2/L3 routing.

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	DCS-7300X-32Q-LC
Brand	Arista
Condition	Refurbished
Model	DCS-7300X-32Q-LC
Port Buffer	24MB dynamic per port group
Product Line	7300X Series
Product Type	40GbE QSFP+ Line Card
Layer 2 Features	VLAN, 802.3x Flow Control, Jumbo Frames 9216B, IGMP Snooping
Layer 3 Features	OSPFv2/v3, BGP, MP-BGP, IS-IS, RIPv2, MPLS

Network & Communication

Compatible systems

Native fit for Arista 7300X modular chassis with EOS; optics/transceivers from Arista partners.

Arista 7300X
Model: DCS-7304
Form factor: 4-slot chassis
Generation: 1st Gen
Supports up to 4x DCS-7300X-32Q-LC line cards.
Arista 7300X
Model: DCS-7308
Form factor: 8-slot chassis
Generation: 1st Gen
Supports up to 8x DCS-7300X-32Q-LC line cards.

Best for

Data Center Spine
High-density 40GbE uplinks for spine-layer switching in multi-tier leaf-spine fabrics handling massive east-west traffic.
Leaf Aggregation
Top-of-rack aggregation of 10/40GbE servers with breakout cables for scalable pod deployments.
Cloud Interconnect
Interconnects for cloud providers requiring VXLAN/EVPN overlay with low-latency, non-blocking throughput.
HPC Networking
High-performance computing clusters needing wire-speed 40GbE for low-latency job scheduling and data movement.
Enterprise Core

Details

Shipping, warranty & returns

Customer reviews

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Weight	10.2 lbs (4.6 kg)
Form Factor	1RU Line Card (17.11x1.73in)

Airflow	Front-to-back or reversible
Operating Temperature	0°C to 40°C (32°F to 104°F)

Ports	32 x QSFP+ (40GbE/10GbE breakout)
Max 10GbE Ports	128 (via splitter cables)
Supported Optics	40GBASE-SR4/CR4/LR4/ER4, 10GBASE-SR/LR/ER/ZR

Arista DCS-7300X-32Q-LC 32x40G 1.92Bpps Line Card

Product overview

Featuring

Network & Communication

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Power Consumption

Physical Characteristics

Environmental

Interface/Ports

Frequently asked questions