• Gray metal arista dcs-7300x3-48yc4-lc server rack with multiple ports and ventilation slots back side view
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Arista

Arista DCS-7300X3-48YC4-LC | 7300X3 48-Port 25G SFP28 Line Card, 4x 100G QSFP28

DCS-7300X3-48YC4-LC

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Description

The Arista DCS-7300X3-48YC4-LC is a high-density modular line card designed for the 7300X3 Series modular chassis, offering 48 ports of 25 Gigabit Ethernet via SFP28 and 4 ports of 100 Gigabit Ethernet via QSFP28. Built for demanding data centre and campus environments, this line card delivers wire-speed Layer 2/3/4 performance with low latency, making it ideal for leaf-spine architectures, server aggregation, and high-throughput network deployments. It integrates seamlessly into compatible 7300X3 chassis with front-to-rear airflow and draws power through the chassis backplane.

Features

Wire-speed Layer 2 and Layer 3 switching with full ECMP and MLAG support
- Up to 64-way ECMP and 64-way MLAG for scalable leaf-spine designs
- Support for VXLAN network virtualization and VMTracer integration
- Advanced buffer management with up to 32 MB per line card for burst absorption
- Dynamic buffer allocation to prevent packet loss under congestion
- Flow-based dynamic load balancing across fabric modules
- Unified Forwarding Table (UFT) with flexible partitioning for MAC, IPv4, and IPv6 routes
- Algorithmic Longest Prefix Match (ALPM) for enhanced route scale
- Support for 128-way ECMP routing and scalable multicast
- IEEE 1588 Precision Time Protocol (PTP) for network timing
- sFlow and LANZ (Latency Analyzer) for real-time network visibility and microburst detection
- Zero Touch Provisioning (ZTP) and CloudVision integration for automated deployment
- Hot-swappable design with no downtime during installation or removal
- Arista EOS operating system with advanced automation, programmability, and telemetry

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

48x 25 Gigabit Ethernet SFP28 ports (supports 10G/25G)
- 4x 100 Gigabit Ethernet QSFP28 uplink ports
- Wire-speed Layer 2/3/4 forwarding performance
- Switching capacity: 6.4 Tbps per line card
- Forwarding rate: up to 4 billion packets per second (system-wide)
- Buffer memory: up to 32 MB per line card for burst absorption
- Power consumption: 193W typical / 228W maximum
- Compatible with DCS-7304, DCS-7308, and DCS-7316 chassis (7300X3 Series)
- Front-to-rear airflow orientation
- Managed by Arista EOS (Extensible Operating System)
- Hot-swappable line card module
- Non-blocking fabric architecture

FAQs

Q: Which Arista chassis is this line card compatible with?
A: The DCS-7300X3-48YC4-LC is designed for the Arista 7300X3 Series modular chassis, including the DCS-7304, DCS-7308, and DCS-7316 systems. It requires matching fabric modules and supervisor modules to operate.

Q: Can this line card support both 10G and 25G connections?
A: Yes, the SFP28 ports support both 10GBASE and 25GBASE Ethernet speeds, providing flexible connectivity for mixed-speed deployments and server upgrades.

Q: What is the typical use case for this line card in a data centre?
A: This line card is ideal for high-density server aggregation in leaf-spine architectures, providing 25G connectivity to servers and 100G uplinks to spine switches. It's well-suited for hyperscale data centres, enterprise campus cores, and high-performance computing environments.

Q: Does this line card require any additional licenses?
A: Licensing depends on the chassis and software features required. Standard Layer 2 and Layer 3 features are included with Arista EOS. Advanced features such as VXLAN, EVPN, and analytics may require specific software entitlements.

Q: What is the power consumption of this line card?
A: The DCS-7300X3-48YC4-LC consumes approximately 193W under typical operation and up to 228W at maximum load. Power is supplied via the chassis backplane, so ensure your chassis has adequate PSU capacity.

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