• Gray metal arista dcs-7800r3-48cqm2-lc server rack back with multiple ports and ventilation slots for high-speed networking
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Arista

Arista DCS-7800R3-48CQM2-LC | 7800R3 48-Port 100GbE QSFP Line Card, MACsec, CPU

Arista DCS-7800R3-48CQM2-LC | 7800R3 48-Port 100GbE QSFP Line Card, MACsec, CPU

DCS-7800R3-48CQM2-LC

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Description

The Arista DCS-7800R3-48CQM2-LC is a 48-port 100GbE QSFP line card engineered for the 7800R3 modular chassis platform, delivering up to 9.6 Tbps of full-duplex, non-blocking bandwidth. Designed for high-density data centre interconnect, cloud spine, and carrier routing deployments, it features Enhanced MACsec (IEEE 802.1AE) line-rate encryption with AES-256-GCM, an onboard CPU for advanced programmability, and a deep-buffer Virtual Output Queue (VOQ) architecture that eliminates head-of-line blocking under heavy traffic conditions.

Compatible with 7804R, 7808R, 7812R, and 7816R chassis variants, this line card integrates seamlessly alongside 100G and 400G line cards in the same system. The FlexRoute Engine supports full Internet-scale routing, while TunnelSec enables flexible L2, L3, and overlay encryption via MACsec, IPsec, and VXLANsec. Powered by Arista EOS with eAPI and CloudVision integration, it supports EVPN-VXLAN, MPLS, and Segment Routing for modern telco cloud and DCI designs. Available now at iptrading.com.au — competitive prices and local support.

Features

- Enhanced MACsec (IEEE 802.1AE) delivers line-rate frame encryption and authentication with no throughput penalty
- TunnelSec framework supports MACsec, IPsec (RFC 4303), and VXLANsec for flexible L2, L3, and overlay encryption
- Deep-buffer VOQ architecture eliminates head-of-line blocking across high-density 100GbE port groups
- FlexRoute Engine provides full Internet routing scale with optimised power efficiency
- Accelerated sFlow captures programmatic traffic visibility at line rate with zero forwarding impact
- Algorithmic ACLs enable flexible access control, policy-based forwarding, and granular network telemetry
- Fully interoperable with all 7800R3 Series 100G and 400G line cards in mixed-slot deployments
- Supports large-scale L2, L3, EVPN-VXLAN, MPLS, and Segment Routing network designs
- Hot-swap capable with active-active fabric module support for continuous high availability
- Powered by Arista EOS with open programmability via eAPI and CloudVision integration
- Suited for DCI, provider edge, telco cloud, and Mobile Edge Computing (MEC) overlay deployments

Warranty

Arista hardware products come with a 1-year limited hardware warranty, covering defects in materials and workmanship under normal use.
Extended Warranty Options:
IP Trading offers tailored extended warranty solutions and support packages for Arista products. Contact our team to explore options that align with your organisation's needs.
https://www.arista.com/assets/data/pdf/Warranty.pdf

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

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Technical Specifications

FAQs

Datasheet

Technical Specifications

- 48 x 100GbE QSFP ports
- Up to 9.6 Tbps full-duplex bandwidth
- Non-blocking architecture with Virtual Output Queuing (VOQ)
- Deep buffer: ~40 ms per ingress port
- Enhanced MACsec (IEEE 802.1AE) with AES-256-GCM cipher
- Onboard CPU for advanced control-plane functions
- Algorithmic ACLs: up to 100K entries per forwarding engine
- Accelerated sFlow at line rate
- Supports 10G to 100G pluggable optics and cables
- Compatible chassis: 7804R, 7808R, 7812R, 7816R (4-, 8-, 12-, 16-slot)
- FlexRoute Engine for Internet-scale routing
- Form factor: Hot-swap line card module
- Airflow: Front-to-rear
- Warranty: 1-Year Limited Hardware Warranty (10 business day turnaround)

FAQs

Q: Which chassis are compatible with the DCS-7800R3-48CQM2-LC line card?
A: This line card is compatible with the full 7800R3 Series chassis family: the 7804R (4-slot), 7808R (8-slot), 7812R (12-slot), and 7816R (16-slot). It can be mixed with other 7800R3 100G and 400G line cards within the same chassis for flexible capacity scaling.

Q: What encryption capabilities does this line card support?
A: The DCS-7800R3-48CQM2-LC supports Enhanced MACsec (IEEE 802.1AE) with AES-256-GCM for line-rate L2 frame encryption and authentication. Via the TunnelSec framework, it also supports IPsec (RFC 4303) and VXLANsec, enabling flexible encryption across L2, L3, and overlay network topologies without impacting forwarding performance.

Q: What is the maximum bandwidth this line card can deliver?
A: The line card delivers up to 9.6 Tbps of full-duplex, non-blocking bandwidth across its 48 x 100GbE QSFP ports, using a Virtual Output Queuing (VOQ) architecture to ensure fair bandwidth allocation and eliminate head-of-line blocking.

Q: Is this line card suitable for Internet-scale or carrier routing deployments?
A: Yes. The onboard FlexRoute Engine supports full Internet routing table scale, making the DCS-7800R3-48CQM2-LC well suited for provider edge, carrier routing, and telco cloud deployments. It also supports EVPN-VXLAN, MPLS, and Segment Routing for advanced underlay and overlay designs.

Q: Can I purchase the Arista DCS-7800R3-48CQM2-LC in Australia?
A: Yes. IP Trading is an Australian B2B IT hardware reseller offering the Arista DCS-7800R3-48CQM2-LC with competitive pricing and local support. Order online at iptrading.com.au or contact the team directly for volume pricing and configuration assistance.

Q: What software and management ecosystem does this line card use?
A: The line card runs Arista EOS, which provides a consistent operating environment with open programmability via eAPI, NETCONF, and CloudVision integration. EOS supports streaming telemetry, zero-touch provisioning, and a unified CLI across the entire 7800R3 platform.

Datasheet

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