• Gray metal arista dcs-7800r3-48cqm2-lc server rack back side with multiple ports and ventilation slots for 100g line card
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Arista

Arista DCS-7800R3-48CQM2-LC | 7800R3 48-Port 100G Line Card, Enhanced MACsec, 9.6T

DCS-7800R3-48CQM2-LC

Stock Status: Enquire

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Description

The Arista DCS-7800R3-48CQM2-LC is a high-performance 100G line card designed for the 7800R3 Series modular data center switches. This 48-port QSFP100 module features enhanced MACsec encryption capabilities with an integrated CPU, delivering up to 9.6 Tbps full-duplex throughput and 8GB of packet buffer for deep buffering and congestion management. Ideal for large-scale cloud data centers, internet peering, and mission-critical environments requiring wire-speed encryption and internet-scale routing with FlexRoute support.

Features

Enhanced MACsec encryption with AES-256-GCM on all 48 ports for wire-speed security
- Integrated line card CPU for advanced local processing and control plane operations
- FlexRoute engine for internet-scale routing with millions of routes and low power consumption
- Deep buffer Virtual Output Queue (VOQ) architecture with 8GB memory, eliminating head-of-line blocking
- Accelerated sFlow for line-rate traffic sampling and network telemetry with no forwarding impact
- Algorithmic ACLs for flexible pattern matching, access control, and policy-based forwarding
- Full Layer 2 and Layer 3 feature set including VXLAN, EVPN, MPLS, and Segment Routing
- Support for EVPN-VXLAN, EVPN-MPLS, L2VPN, L3VPN, VPLS, and pseudowires
- Hot-swappable design for continuous operation without chassis downtime
- Non-blocking fabric connectivity to all six fabric modules per chassis
- Hierarchical QoS with classification, policing, shaping, and weighted fair queuing
- Advanced traffic scheduling and congestion management for mixed workloads
- Precision timing support with PTP (Precision Time Protocol)
- Comprehensive telemetry and streaming network state for CloudVision integration
- Hitless port speed changes with no port downtime or service interruption
- Compatible with all 7800R3 and 7800R3A series line cards for flexible deployment

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

Form Factor: Modular line card for Arista 7800R3 Series chassis (7804R, 7808R, 7812R, 7816R)
- Interfaces: 48x 100G QSFP100 ports
- Port Speed Support: 10G, 25G, 40G, 50G, 100G (per port configurable)
- Maximum Interfaces: Up to 96 interfaces (with breakouts)
- Throughput: 4.8 Tbps (9.6 Tbps full-duplex)
- Forwarding Rate: 2 Bpps (billion packets per second)
- Packet Buffer: 8 GB deep buffer memory
- Encryption: Enhanced MACsec support on all ports, AES-256-GCM encryption
- Onboard CPU: Yes, integrated line card CPU
- FlexRoute Support: Yes, internet-scale routing capability
- Accelerated sFlow: Yes, line-rate sampling and telemetry
- Power Consumption: Typical 511W, Maximum 696W (excluding optics)
- Dimensions (W x H x D): 18.9" x 2.1" x 17.8" (48.1 x 5.4 x 45.2 cm)
- Weight: 19.4 lbs (8.81 kg)
- Operating System: Arista EOS

FAQs

Q: What chassis models are compatible with the DCS-7800R3-48CQM2-LC line card?
A: This line card is compatible with all Arista 7800R3 Series chassis models including the 7804R (4-slot), 7808R (8-slot), 7812R (12-slot), and 7816R (16-slot) modular systems. It requires fabric modules and supervisors to operate and can be used alongside other 7800R3 and 7800R3A series line cards.

Q: What is the difference between the 48CQM2-LC and other 7800R3 48-port line cards?
A: The 48CQM2-LC model includes an integrated line card CPU and supports enhanced MACsec encryption on all 48 ports for wire-speed security. The CPU enables advanced local processing capabilities. This model delivers 9.6 Tbps full-duplex throughput with 8GB of packet buffer memory and supports FlexRoute for internet-scale routing.

Q: Does this line card require a separate MACsec license?
A: Yes, to enable MACsec encryption functionality on this line card, you must purchase a separate MACsec license appropriate for your chassis size: LIC-MOD-1-MACsec (4-slot), LIC-MOD-2-MACsec (8-slot), LIC-MOD-3-MACsec (12-slot), or LIC-MOD-4-MACsec (16-slot).

Q: What types of transceivers and speeds are supported on each port?
A: Each QSFP100 port supports 10G, 25G, 40G, 50G, and 100G operation with appropriate transceivers or DAC cables. Ports can be broken out to support multiple lower-speed connections (e.g., 1x100G or 2x50G or 4x25G). The line card supports a wide range of 10G to 100G QSFP28 and QSFP+ optics including SR4, LR4, ER4, and direct attach copper cables.

Q: What are the key use cases for this line card?
A: The DCS-7800R3-48CQM2-LC is ideal for high-density data center spine applications, internet peering routers, data center interconnect (DCI) with encryption, service provider edge networks, and large-scale EVPN-VXLAN fabrics. The enhanced MACsec encryption makes it suitable for secure multi-tenant environments and regulatory compliance requirements where wire-speed layer 2 encryption is needed.

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