• Gray metal arista dcs-7500r3-24d-lc server rack back with multiple 400g qsfp-dd ports and ventilation slots
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Arista

Arista DCS-7500R3-24D-LC | 7500R3 24-Port 400G QSFP-DD Line Card, 16GB Buffer

DCS-7500R3-24D-LC

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Description

The Arista 7500R3 24-port 400G QSFP-DD line card is a wire-speed module for the 7500R3 modular data centre switch and router. It is aimed at cloud-scale data centres, internet edge, peering, data centre interconnect and backbone deployments that need high-density 400G with deep buffers and large routing tables.

The card provides 24 QSFP-DD 400GbE ports and 16 GB of packet buffer, with forwarding of up to 4 billion packets per second and 9.6 Tbps of switching capacity per slot. Each port can be broken out to 100G, 50G, 25G or 10G, giving up to 96 x 100G, 192 x 50G, 192 x 25G or 192 x 10G interfaces, to a maximum of 192 interfaces per card. This QSFP-DD version is distinct from the DCS-7500R3-24P-LC, which uses 24 x 400G OSFP ports.

The line card fits the DCS-7512N, DCS-7508N and DCS-7504N chassis and works with the DCS-7500-SUP2 supervisor and DCS-75xxR3-FM fabric modules. It accepts QSFP-DD 400G optics and cables, and typical power draw is 530 W excluding optics.

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

Features

- Wire-speed 400G with a single-stage distributed virtual output queue (VOQ) architecture and lossless fabric that eliminates head-of-line blocking
- Deep buffers of 16 GB per line card, about 50 ms per ingress port, to limit packet drops during congestion
- QSFP-DD ports support 4x100G and 2x200G modes plus breakout, with speed changes and breakouts set independently per port
- Large routing tables suited to internet peering and secure data centre interconnect
- Non-blocking full-mesh connection to all fabric modules
- Chassis platform with N+N grid power redundancy, 1+1 supervisor redundancy, fabric module redundancy and N+1 fan redundancy
- Backward compatible with previous-generation 7500R and 7500E components, with mixed-mode operation
- Runs Arista EOS with CloudVision, Zero Touch Provisioning, LANZ and DANZ

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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specs-tabs

Technical Specifications

FAQs

Technical Specifications

- Ports: 24 x 400GbE QSFP-DD
- Wire-speed: Yes
- Max 10G interfaces: 192
- Max 25G interfaces: 192
- Max 40G interfaces: 24
- Max 50G interfaces: 192
- Max 100G interfaces: 96
- Max 400G interfaces: 24
- Max total interfaces: 192
- Packet buffer: 16 GB per line card
- Forwarding rate: up to 4 billion packets per second per line card
- Switching capacity: 9.6 Tbps per slot
- Latency: under 4 microseconds (64 bytes)
- Typical power: 530 W (714 W maximum), excluding optics
- Dimensions (W x H x D): 44.5 x 4.5 x 58.4 cm (17.5 x 1.75 x 23 in)
- Weight: 9.1 kg (20 lbs)
- Operating temperature: 0 to 40 C
- Storage temperature: -40 to 70 C
- Relative humidity: 5 to 90%
- Operating altitude: 0 to 3,000 m
- Airflow: front-to-rear
- Chassis support: DCS-7512N, DCS-7508N, DCS-7504N
- Certifications: FCC Class A, CE, UKCA, RCM, VCCI, KCC, NRTL, BSMI, TEC, ANATEL, ICASA, NOM

FAQs

Q: Does this line card need its own licence?
A: No. The line card has no separate licence of its own. Available features depend on the chassis-level EOS licences, such as Enhanced routing, Virtualization, Monitoring & Provisioning, and FLX or FLX-Lite for full routing and EVPN/VXLAN/SR/MPLS. The licences needed depend on your deployment.

Q: Which chassis and supporting modules does it work with?
A: It fits the DCS-7512N (12 slots), DCS-7508N (8 slots) and DCS-7504N (4 slots) chassis. It requires a DCS-7500-SUP2 supervisor and DCS-75xxR3-FM fabric modules, with six fabric modules per chassis.

Q: How much power does it draw?
A: Typical draw is 530 W and maximum is 714 W per line card, excluding optics. It is powered from the chassis by 3000W PSUs such as PWR-3KT-AC-RED, PWR-3KT-HV-RED or PWR-3K-DC-RED.

Q: Which optics and cables can I use?
A: The ports accept QSFP-DD 400G optics and cables, including 400GBASE-CR8 and AOC, with breakout to 100G, 50G, 25G or 10G where supported. Check the Arista transceiver and cable matrix for supported modules.

Q: How does it differ from the DCS-7500R3-24P-LC?
A: This DCS-7500R3-24D-LC provides 24 x 400G QSFP-DD ports. The DCS-7500R3-24P-LC provides 24 x 400G OSFP ports, so the two take different optic form factors.

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