• Silver-colored arista dcs-7800r3-48cqms-lc rack-mounted network switches with 48-port 100g qsfp line card and ventilation slots
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Arista

Arista DCS-7800R3-48CQMS-LC | 7800R3 48-Port 100G QSFP Line Card, Enhanced MACsec

DCS-7800R3-48CQMS-LC

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Description

The DCS-7800R3-48CQMS-LC is a 48-port 100GbE QSFP100 line card for the Arista 7800R3 Series modular chassis. It is built for large-scale data centre and cloud layer 2/3 networks, internet peering, secure data centre interconnect, and carrier or WAN edge and core roles. Enhanced MACsec on every port suits encrypted point-to-point links.

The card provides 48 QSFP100 ports, which can run as 48x 100G, 48x 50G, 48x 40G, or up to 96x 25G or 96x 10G using breakouts. Throughput is 4.8 Tbps (9.6 Tbps full duplex) with an 8 GB port buffer, supporting a fully scheduled lossless architecture with per-port Virtual Output Queuing. This variant has Enhanced MACsec on all ports and no on-card CPU, which separates it from the 48CQ2-LC (no MACsec) and the 48CQM2-LC (MACsec with CPU). Typical power draw is 501 W, with a 666 W maximum, excluding optics.

It fits the DCS-7804, DCS-7808, DCS-7812, DCS-7816 and DCS-7816L chassis and requires a supervisor module. The QSFP ports accept 100GBASE SR4, XSR4, SWDM4, LR4, LR, CWDM4, FR, DR, PSM4 and ERL4 optics, as well as AOC and CR4 cables. 40G QSFP+ optics and 50G, 25G and 10G breakouts are also supported.

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

Features

- Fully scheduled lossless architecture with cell-spraying fabric and per-port Virtual Output Queuing, avoiding head-of-line blocking
- Latency under 4 microseconds (64 bytes)
- Deep packet buffers and large routing tables for internet peering and secure data centre interconnect
- MACsec (IEEE 802.1AE) encryption on all ports
- EVPN, MPLS (LDP, RSVP-TE, SR-TE), FRR/TI-LFA and IEEE 1588 PTP support
- Open programmable APIs (JSON-RPC, NETCONF), CloudVision, LANZ microburst detection, ZTP and accelerated sFlow
- Runs Arista EOS with full Linux shell access and extensibility (bash, python, C++)
- Typical power of 16W per 100G port

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

- Ports: 48x QSFP100
- Maximum 100G interfaces: 48
- Maximum 50G interfaces: 48
- Maximum 40G interfaces (using QSFP+): 48
- Maximum 25G interfaces: 96
- Maximum 10G interfaces: 96
- Maximum total interfaces: 96
- Throughput: 4.8 Tbps (9.6 Tbps full duplex)
- Encryption: MACsec on all ports
- Port buffer: 8 GB
- On-card CPU: None
- Typical power: 501 W (excludes optics)
- Maximum power: 666 W (excludes optics)
- Dimensions (W x H x D): 48.1 x 5.4 x 45.2 cm
- Weight: 8.7 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
- Airflow: Front-to-rear
- Chassis support: DCS-7804, DCS-7808, DCS-7812, DCS-7816, DCS-7816L
- Certifications: FCC Class A, ICES-003, CE, UKCA, RCM (AU/NZ), VCCI, KCC, BSMI, NRTL, TEC, ANATEL, ICASA, NOM

FAQs

Q: Which chassis does this line card fit?
A: It fits the Arista DCS-7804, DCS-7808, DCS-7812, DCS-7816 and DCS-7816L chassis. A supervisor module such as the DCS-7800-SUP, SUP1A, SU1S or DCS-7816-SUP is also required.

Q: How does this card differ from the 48CQ2-LC and 48CQM2-LC?
A: The DCS-7800R3-48CQMS-LC has Enhanced MACsec on all ports and no on-card CPU. The 48CQ2-LC has no MACsec, and the 48CQM2-LC has MACsec with an on-card CPU.

Q: Which optics and cables do the QSFP ports support?
A: The ports support 100GBASE SR4, XSR4, SWDM4, LR4, LR, CWDM4, FR, DR, PSM4 and ERL4 optics, plus AOC and CR4 cables. They also take 40G QSFP+ optics, and 50G, 25G or 10G via breakout.

Q: What licensing does it need?
A: The card runs under Arista EOS on the chassis. Encryption services such as MACsec are an EOS licensed feature requiring a licence file, and routing and virtualisation features are covered by the chassis software licences.

Q: How much power does the line card draw?
A: Typical draw is 501 W and maximum is 666 W per card, excluding optics. Power is supplied by the chassis, which has dual-input grid-redundant power supplies.

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