• Silver-colored rack-mounted arista dcs-7800r4k-36pe-lc 36-port 800gbe osfp line card with ventilation slots
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Arista

Arista DCS-7800R4K-36PE-LC | 7800R4 36-Port 800GbE OSFP Line Card, Enhanced Encryption

DCS-7800R4K-36PE-LC

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Description

The Arista DCS-7800R4K-36PE-LC is a high-density 36-port 800GbE OSFP line card engineered for demanding data centre spine applications and compute clusters. This enhanced line card features TunnelSec layer 2 and layer 3 encryption capabilities and expanded FlexRoute support for over 5 million routes, making it ideal for secure, large-scale routing environments. Designed exclusively for the Arista 7800R4 Series modular switches, it delivers non-blocking fabric performance with full lossless architecture.

Features

36 ports of 800GbE OSFP connectivity for ultra-high-density spine applications
- Enhanced TunnelSec encryption for layer 2 and layer 3 traffic protection
- FlexRoute engine supporting over 5 million IPv4 and IPv6 routes in hardware
- Distributed credit scheduling for 100% lossless fabric operation
- Virtual Output Queues (VOQ) eliminating head-of-line blocking
- Cell-based fabric architecture for optimal elephant and mice flow handling
- Full support for MPLS, VXLAN, and advanced routing protocols
- Accelerated sFlow for high-density telemetry and traffic visibility
- Hot-swappable design for zero-downtime maintenance
- Advanced QoS and policy-based forwarding capabilities
- Seamless integration with Arista EOS for unified management
- Support for up to 256K routes in standard forwarding profiles

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

36 x 800GbE OSFP ports
- Data rate: 800Gbps per port
- Enhanced encryption: TunnelSec layer 2 and layer 3 support
- FlexRoute support: Over 5 million routes in hardware
- Compatibility: Arista 7800R4 Series chassis (DCS-7804, DCS-7808)
- Power consumption: Approximately 25W per port
- Operating temperature: 0°C to 40°C
- Compliance: IEEE 802.3bs
- Management: Arista EOS with distributed credit scheduling
- Non-blocking fabric architecture with VOQ and cell-based fabric

FAQs

Q: Which chassis is the DCS-7800R4K-36PE-LC line card compatible with?
A: This line card is designed specifically for the Arista 7800R4 Series modular switches, including the DCS-7804 (4-slot) and DCS-7808 (8-slot) chassis. It requires compatible fabric modules and supervisor modules to operate.

Q: What is the difference between the DCS-7800R4K-36PE-LC and the standard DCS-7800R4-36PE-LC?
A: The K-series variant (DCS-7800R4K-36PE-LC) includes enhanced encryption capabilities with TunnelSec layer 2 and layer 3 support, plus expanded FlexRoute support for over 5 million routes. The standard version offers standard routing and security features.

Q: What types of transceivers are supported on this line card?
A: The line card supports 800GbE OSFP transceivers including optical, copper, and Active Optical Cable (AOC) variants. Consult Arista's transceiver compatibility matrix for specific part numbers and EOS release requirements.

Q: Does this line card support breakout configurations?
A: Yes, each 800GbE OSFP port can be configured for various breakout modes depending on transceiver capabilities and EOS support, enabling flexible deployment scenarios from high-density 800GbE to lower-speed breakouts.

Q: What use cases is the DCS-7800R4K-36PE-LC best suited for?
A: This line card is ideal for AI/ML compute cluster spine switches, large-scale data centre fabrics requiring deep routing tables, secure multi-tenant environments with encryption needs, and high-performance cloud networks demanding lossless fabric operation.

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