• Silver-colored arista dcs-7800r4-36pe-lc rack-mounted network switches with 36 ports and ventilation slots
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Arista

Arista DCS-7800R4-36PE-LC | 7800R4 36-Port 800GbE OSFP Line Card

DCS-7800R4-36PE-LC

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Description

The Arista DCS-7800R4-36PE-LC is a high-performance 36-port 800GbE OSFP line card designed for demanding data centre and AI infrastructure deployments. Engineered for the Arista 7800R4 Series modular chassis, this line card delivers wire-speed performance with support for flexible breakout modes including 400GbE, 200GbE, 100GbE, 50GbE, and 25GbE. It features advanced capabilities including MPLS, Segment Routing, and EVPN-VXLAN, making it ideal for large-scale spine architectures, data centre interconnects, and service provider backbone networks.

Features

36 x 800GbE OSFP ports with wire-speed breakout capability to 25G/50G/100G/200G/400G
- Fully distributed multi-chip architecture with 100% lossless and fair packet delivery
- Virtual Output Queues (VOQ) with distributed credit scheduling eliminates head-of-line blocking
- Cell-based fabric spraying for 100% efficient bandwidth utilization across all fabric links
- Deep buffering to handle incast traffic, bursts, and speed mismatches without packet loss
- Support for MPLS, Segment Routing (SR), and EVPN-VXLAN overlay networks
- FlexRoute technology for Internet-scale routing tables with low power consumption
- Advanced QoS with hierarchical queuing, classification, and flexible rewrite capabilities
- Comprehensive traffic counters with up to 16 classifications for real-time telemetry
- Hot-swappable design for maximum uptime and serviceability
- Support for ZR and ZR+ coherent DWDM transceivers for long-haul connectivity
- Compatible with OSFP copper, AOC, and optical transceiver modules
- Managed by Arista EOS with support for CloudVision orchestration and automation

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

Ports: 36 x 800GbE OSFP
- Data Rate: 800 Gbps per port
- Breakout Support: Wire-speed breakout to 400G, 200G, 100G, 50G, and 25G
- Connector Type: OSFP (Octal Small Form-factor Pluggable)
- Compatibility: Arista 7800R4 Series chassis (4, 8, 12, and 16-slot configurations)
- Architecture: Fully distributed multi-chip system with VOQ cell-spraying, lossless and non-blocking
- Power Consumption: 25W per port typical at 25°C ambient with 50% load
- Operating Temperature: 0°C to 40°C
- Compliance: IEEE 802.3bs
- Management: Arista EOS (Extensible Operating System)

FAQs

Q: What chassis is the DCS-7800R4-36PE-LC compatible with?
A: This line card is specifically designed for the Arista 7800R4 Series modular chassis, available in 4-slot (7804), 8-slot (7808), 12-slot (7812), and 16-slot (7816) configurations. It requires R4 series fabric modules for operation.

Q: Can this line card support lower-speed interfaces?
A: Yes, each 800GbE port supports wire-speed breakout to multiple lower-speed interfaces including 2x 400G, 4x 200G, 8x 100G, 16x 50G, or 32x 25G, providing exceptional flexibility for mixed-speed deployments and migration scenarios.

Q: What are the primary use cases for the DCS-7800R4-36PE-LC?
A: This line card is ideal for high-performance AI/ML cluster interconnects, large-scale data centre spine architectures, data centre interconnect (DCI) applications, service provider backbones, and cloud network infrastructures requiring ultra-high bandwidth and lossless performance.

Q: Does this line card support advanced routing and security features?
A: Yes, it supports comprehensive Layer 2 and Layer 3 features including MPLS, Segment Routing, EVPN-VXLAN, large routing tables (up to 256K routes), FlexRoute technology, and advanced QoS capabilities. For enhanced encryption and larger routing scale, consider the DCS-7800R4K-36PE-LC variant.

Q: What is included with the line card purchase?
A: The line card comes with a one-year limited hardware warranty covering defects in materials and workmanship. Extended warranty and support packages are available separately. The chassis, fabric modules, supervisor modules, and power supplies must be purchased separately.

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