• Silver-colored arista dcs-7800r3k-48cq-lc rack-mounted network switches with 48 ports and ventilation slots
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Arista

Arista DCS-7800R3K-48CQ-LC | 7800R3 48-Port 100G QSFP Line Card, 5M Routes, No MACsec

DCS-7800R3K-48CQ-LC

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Description

The Arista 7800R3 48-port 100G QSFP line card is a modular, wire-speed card for the 7800R3 chassis family. The K model uses the FlexRoute engine to scale past 5M routes in hardware, which suits universal spine and cloud networks, Internet peering, provider and carrier edge routing, data centre interconnect and high-density 100G spine and leaf aggregation.

Each card provides 48 QSFP100 ports, with 4.8 Tbps (9.6 Tbps FDX) of throughput, 2 Bpps of forwarding and 8 GB of port buffer. Ports also run at 40G with QSFP+ optics, and can break out to 4x25G or 4x10G, with speed changes made per port without affecting the others on the card. This SKU has no MACsec hardware, so line-rate encryption is not available on it. Typical power draw is 398 W and maximum is 462 W, excluding optics, and power is supplied by the chassis.

The card installs in the Arista 7816L, 7816, 7812, 7808 and 7804 chassis alongside 7800R3 fabric modules and a 7800 supervisor, and runs under Arista EOS.

Enquire with XS Network Tech for new or used pricing and availability.

Features

- FlexRoute engine for Internet-scale routing in hardware, scaling past 5M routes on the K model
- Algorithmic ACLs for flexible pattern matching, policy-based forwarding and telemetry
- Accelerated sFlow for visibility and programmatic traffic steering with no impact on forwarding
- Virtual Output Queues per port and CoS to eliminate head-of-line blocking
- 8 GB deep buffers for bursty traffic and lossless behaviour
- Independent speed changes and breakout per port without affecting other ports on the card
- Hot-swap modular design with redundant supervisors, fabric, power and cooling in the chassis
- Runs Arista EOS with CloudVision, ZTP, LANZ/DANZ, INT and IEEE 1588 PTP support

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

- Ordering description: 7800R3 Series 48 port 100GbE QSFP wire speed line card, large routes
- Ports: 48x QSFP100
- Max 10G interfaces: 96
- Max 25G interfaces: 96
- Max 40G interfaces (using QSFP+): 48
- Max 50G interfaces: 48
- Max 100G interfaces: 48
- Max total interfaces: 96
- Route scale: over 5M routes with FlexRoute
- Throughput (FDX): 4.8 Tbps (9.6 Tbps)
- Forwarding rate: 2 Bpps
- ECMP: 512-way
- Port buffer: 8 GB
- Encryption: No (no MACsec)
- Typical (max) power: 398 W (462 W), excluding optics
- Dimensions (W x H x D): 48.1 x 5.4 x 45.2 cm
- Weight: 9.1 kg
- Operating temperature: 0 to 40 C
- Storage temperature: -40 to 70 C
- Relative humidity: 5 to 90%
- Operating altitude: 0 to 3,000 m
- Chassis support: DCS-7816L, DCS-7816, DCS-7812, DCS-7808, DCS-7804
- Certifications: FCC Class A, CE, UKCA, RCM, VCCI, KCC, BSMI, NRTL

FAQs

Q: Which chassis does this line card install in?
A: It installs in the Arista 7816L, 7816, 7812, 7808 and 7804 chassis. It needs 7800R3 fabric modules (7804R3-FM, 7808R3-FM/FM2, 7812R3-FM or 7816R3-FM) and a 7800 supervisor.

Q: Does this line card support MACsec encryption?
A: No. This SKU has no MACsec or TunnelSec hardware. If you need line-rate encryption, choose a 7800R3 line card variant that includes it.

Q: What is the difference between this card and the standard 7800R3 48-port 100G card?
A: This is the large-routes K model. It uses FlexRoute to scale past 5M routes, which suits full Internet table and peering roles.

Q: What optics and speeds do the ports support?
A: The 48 QSFP100 ports support 100G QSFP28 optics and DACs such as SR4, LR4, CWDM4, FR, DR, PSM4, AOC and CR4. They also support 40G QSFP+ optics and breakout to 4x25G and 4x10G.

Q: How much power does the line card draw?
A: Typical draw is 398 W and maximum is 462 W, excluding optics. Power is supplied by the chassis power supplies, so size them for the full line card load.

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