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Vendor:Arista
Arista DCS-7804-FM | 7800R3 Fabric Module for 7804 Chassis, Slots 1-6
The Arista DCS-7804-FM is a high-performance fabric module designed for the 7800R3 Series modular data center chassis. Required for fabric slots 1-6 in the DCS-7804 chassis, this module provides non-blocking cell-based fabric interconnection between line cards, enabling up to 115 Tbps throughput. Featuring graceful degradation redundancy and user-serviceable fans, it delivers enterprise-class reliability for demanding data center environments. -
Vendor:Arista
Arista DCS-7804-FCM | 7800 Fabric Cooling Module for 7804 Chassis
The Arista DCS-7804-FCM is a fabric cooling module designed specifically for the 7800 Series 7804 modular chassis. This critical component installs in fabric slot 6 and provides cooling for fabric modules while ensuring optimal airflow and thermal management. The module supports graceful cooling degradation and hot-swap capability for continuous operation in demanding data center environments. -
Vendor:Arista
Arista DCS-7804-CH | 7800R4 Modular Chassis, 4 Line Card Slots, 10RU
The Arista DCS-7804-CH is a high-performance modular chassis designed for AI/ML spine networks, data center interconnects, and service provider backbones. This 10RU chassis features 2 supervisor slots, 4 line card slots, and 6 fabric module slots, supporting up to 144 x 800GbE or 288 x 400GbE ports with 115 Tbps throughput. Flexible AC or DC power options accommodate diverse deployment scenarios. -
Vendor:Arista
Arista DCS-7800R4K-36PE-LC | 7800R4 36-Port 800GbE OSFP Line Card, Enhanced Encryption
DCS-7800R4K-36PE-LC
Vendor:AristaArista DCS-7800R4K-36PE-LC | 7800R4 36-Port 800GbE OSFP Line Card, Enhanced Encryption
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. -
Vendor:Arista
Arista DCS-7800R4C-36PE-LC | 7800R4 36-Port 800GbE Line Card, AI-Optimized
DCS-7800R4C-36PE-LC
Vendor:AristaArista DCS-7800R4C-36PE-LC | 7800R4 36-Port 800GbE Line Card, AI-Optimized
The Arista DCS-7800R4C-36PE-LC is a high-performance 36-port 800GbE OSFP line card designed for the 7800R4 Series modular AI spine switches. Optimized specifically for AI/ML and HPC cluster computing, this R4C variant delivers ultra-low latency, lossless forwarding, and energy-efficient operation. It supports wire-speed breakout to 25G, 50G, 100G, 200G, and 400G, providing exceptional flexibility for large-scale accelerated compute clusters and data center interconnects. -
Vendor:Arista
Arista DCS-7800R4-36PE-LC | 7800R4 36-Port 800GbE OSFP Line Card
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. -
Vendor:Arista
Arista DCS-7800R3K-72Y-LC | 7800R3 72-Port 25G SFP28 Line Card, FlexRoute 5M Routes
DCS-7800R3K-72Y-LC
Vendor:AristaArista DCS-7800R3K-72Y-LC | 7800R3 72-Port 25G SFP28 Line Card, FlexRoute 5M Routes
The Arista DCS-7800R3K-72Y-LC is a high-density 72-port 25GbE SFP28 wirespeed line card for the 7800R3 Series modular chassis. Designed for data center spine, internet peering, and carrier edge deployments, it features FlexRoute technology supporting over 5 million IPv4/IPv6 routes in hardware. This K-series module delivers wire-speed forwarding with deep packet buffering, virtual output queuing architecture, and support for advanced features including Algorithmic ACLs and Accelerated sFlow. -
Vendor:Arista
Arista DCS-7800R3K-48CQ-LC | 7800R3 48-Port 100G QSFP Line Card, 5M Routes
DCS-7800R3K-48CQ-LC
Vendor:AristaArista DCS-7800R3K-48CQ-LC | 7800R3 48-Port 100G QSFP Line Card, 5M Routes
The Arista DCS-7800R3K-48CQ-LC is a high-performance line card for the 7800R3 Series modular data center chassis, delivering 48 ports of wirespeed 100GbE QSFP connectivity with 4.8 Tbps throughput and 2 Bpps forwarding capacity. Designed for large-scale virtualized data centers, internet peering, and cloud networks, this module features FlexRoute scaling to over 5 million IP routes, making it ideal for internet-scale routing deployments. The large-table architecture with 8GB buffer and virtual output queuing ensures lossless forwarding, low latency, and exceptional performance for demanding Layer 2 and Layer 3 spine and leaf architectures. -
Vendor:Arista
Arista DCS-7800R3K-36DM-LC | 7800R3 36-Port 400G QSFP-DD Line Card, MACsec, 5M Routes
DCS-7800R3K-36DM-LC
Vendor:AristaArista DCS-7800R3K-36DM-LC | 7800R3 36-Port 400G QSFP-DD Line Card, MACsec, 5M Routes
The Arista DCS-7800R3K-36DM-LC is a high-performance modular line card for the 7800R3 Series chassis, delivering 36 ports of 400GbE QSFP-DD connectivity with wirespeed MACsec encryption and advanced routing capabilities. This line card features large-scale routing table support for over 5 million routes, making it ideal for internet peering, data center interconnect, and hyperscale cloud spine deployments. With 14.4 Tbps full-duplex throughput, 16GB port buffer memory, and support for flexible port speeds from 10G to 400G, it provides the scalability and security required for next-generation data center architectures. -
Vendor:Arista
Arista DCS-7800R3AK-36PM-LC | 7800R3 36-Port 400G OSFP Line Card, FlexRoute 5M Routes
DCS-7800R3AK-36PM-LC
Vendor:AristaArista DCS-7800R3AK-36PM-LC | 7800R3 36-Port 400G OSFP Line Card, FlexRoute 5M Routes
The Arista DCS-7800R3AK-36PM-LC is a high-performance modular line card designed for data center spine and internet peering deployments. This 36-port 400GbE OSFP line card features large route capacity with FlexRoute technology supporting over 5 million IP routes, enhanced MACsec encryption capabilities, and TunnelSec support for line-rate IPsec, MACsec, and VXLANsec encryption. Ideal for carrier edge, internet peering, and data center interconnect applications requiring massive routing scale and advanced security. -
Vendor:Arista
Arista DCS-7800R3AK-36DM2-LC | 7800R3 36-Port 400GbE Line Card, Enhanced MACsec
DCS-7800R3AK-36DM2-LC
Vendor:AristaArista DCS-7800R3AK-36DM2-LC | 7800R3 36-Port 400GbE Line Card, Enhanced MACsec
The Arista DCS-7800R3AK-36DM2-LC is a high-performance modular line card for the 7800R3 Series chassis, delivering 36 ports of 400GbE QSFP-DD connectivity with enhanced MACsec encryption and integrated CPU. Designed for large-scale data centers and cloud networks, it supports FlexRoute technology scaling to over 5 million routes, making it ideal for internet peering, data center interconnect, and spine deployments. The 7800R3AK variant provides large-scale routing capabilities with TunnelSec encryption support for MACsec, IPsec, and VXLANsec. -
Vendor:Arista
Arista DCS-7800R3AK-36DM-LC | 7800R3 36-Port 400G Line Card, Large Routes, MACsec
DCS-7800R3AK-36DM-LC
Vendor:AristaArista DCS-7800R3AK-36DM-LC | 7800R3 36-Port 400G Line Card, Large Routes, MACsec
The Arista DCS-7800R3AK-36DM-LC is a high-performance line card for 7800R3 Series modular data center switches, delivering 28.8 Tbps full-duplex throughput across 36x 400GbE QSFP-DD ports. Designed for large-scale cloud and service provider networks, it features FlexRoute support for over 5 million routes, enhanced MACsec encryption with AES-256-GCM, and flexible breakout options supporting 400G, 4x100G, or lower speeds per port. Ideal for spine-leaf architectures, data center interconnect, and high-density edge routing applications requiring advanced security and massive routing scale. -
Vendor:Arista
Arista DCS-7800R3A-36PM-LC | 7800R3A 36-Port 400GbE Line Card, MACsec Encryption
DCS-7800R3A-36PM-LC
Vendor:AristaArista DCS-7800R3A-36PM-LC | 7800R3A 36-Port 400GbE Line Card, MACsec Encryption
The Arista DCS-7800R3A-36PM-LC is a high-performance modular line card designed for data center spine and core deployments. It delivers 36 ports of 400GbE OSFP connectivity with 28.8 Tbps full-duplex bandwidth and integrated Enhanced MACsec encryption capabilities for secure layer 2 traffic protection. Ideal for large-scale cloud networks, internet peering, and data center interconnect applications requiring wire-speed encryption and flexible routing scalability. -
Vendor:Arista
Arista DCS-7800R3A-36P-LC | 7800R3A 36-Port 400GbE OSFP Line Card, 14.4 Tbps
DCS-7800R3A-36P-LC
Vendor:AristaArista DCS-7800R3A-36P-LC | 7800R3A 36-Port 400GbE OSFP Line Card, 14.4 Tbps
The Arista DCS-7800R3A-36P-LC is a high-performance modular line card designed for large-scale data center spine and aggregation deployments. Featuring 36 ports of 400GbE OSFP with flexible breakout capabilities, this line card delivers 14.4 Tbps of switching capacity with deep buffer VOQ architecture for lossless forwarding. Advanced features include FlexRoute for internet-scale routing, Accelerated sFlow for network telemetry, and compatibility with the full Arista 7800R Series chassis family. -
Vendor:Arista
Arista DCS-7800R3A-36DM2-LC | 7800R3A 36-Port 400G QSFP-DD Line Card, Enhanced MACsec
DCS-7800R3A-36DM2-LC
Vendor:AristaArista DCS-7800R3A-36DM2-LC | 7800R3A 36-Port 400G QSFP-DD Line Card, Enhanced MACsec
The Arista DCS-7800R3A-36DM2-LC is a high-performance modular line card designed for large-scale data center spine and routing deployments. This 36-port 400GbE QSFP-DD line card features integrated CPU and Enhanced MACsec encryption capabilities, delivering up to 28.8 Tbps full-duplex bandwidth with AES-256-GCM encryption. Supporting Arista's TunnelSec technology, it enables line-rate MACsec, IPsec, and VXLANsec encryption across all interface speeds from 10G to 400G, making it ideal for secure data center interconnect and WAN applications. -
Vendor:Arista
Arista DCS-7800R3A-36DM-LC | 7800R3 36-Port 400G QSFP-DD Line Card, MACsec
DCS-7800R3A-36DM-LC
Vendor:AristaArista DCS-7800R3A-36DM-LC | 7800R3 36-Port 400G QSFP-DD Line Card, MACsec
The Arista DCS-7800R3A-36DM-LC is a high-performance modular line card designed for the 7800R3 Series chassis, delivering 36 ports of 400GbE QSFP-DD connectivity with enhanced MACsec encryption. Built for large-scale data center spine and core deployments, it delivers up to 28.8 Tbps of full-duplex bandwidth with wire-speed Layer 2 and Layer 3 forwarding. The card features FlexRoute technology for internet-scale routing, deep buffer VOQ architecture for lossless forwarding, and comprehensive encryption capabilities including IEEE 802.1AE MACsec for secure data center interconnect and cloud applications.
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Why buy Arista from XS Network Tech?
From pre-sales consultation to same-day dispatch, we make Arista procurement fast and hassle-free. Our sales and logistics team serves government departments, data centres, and service providers sourcing new, used, and EOL Arista hardware globally so you're never stuck waiting on a distributor. All used units tested and backed by a 12-month warranty.
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Can I still buy discontinued Arista models?
Yes. We carry end-of-life (EOL) Arista switches that are no longer available through other channels. We stock models from the 7050, 7280, 7500, and 7800R3 series. If you're expanding an existing fabric or need a like-for-like replacement without reconfiguring your entire stack, sourcing the same EOL model is often the most cost-effective decision.
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What Arista hardware does XS Network Tech stock?
Our Arista range covers data centre switches (7050X3, 7050X4, 7060X4, 7060X5, 7260X3, 7280R3, 7280R3A, 7300X3, 7800R3, 7800R4), enterprise and campus switches (7130, 7170, 7020R4), transceivers, ethernet cables, stacking cables, and switch modules. Can't find your model? Request a quote and we'll source it.