• Silver-colored arista dcs-7800r3-48cq-lc rack-mounted network switches with 48 100g qsfp ports and ventilation slots
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Arista

Arista DCS-7800R3-48CQ-LC | 7800R3 48-Port 100G QSFP Line Card, 8GB Buffer

DCS-7800R3-48CQ-LC

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Description

The Arista 7800R3 48-port 100G line card is a modular QSFP100 line card for the 7800R3 chassis family. It is built for large-scale data centre spine and leaf-spine fabrics, Internet peering and edge routing, data centre interconnect (DCI), and deep-buffer 100G aggregation.

The card provides 48 QSFP100 ports with wire-speed, non-blocking forwarding on every port. It delivers 4.8 Tbps (9.6 Tbps FDX) of throughput and 2 Bpps forwarding, backed by 8 GB of port buffer and a Virtual Output Queuing architecture. Ports run at 100G or 40G, and breakout optics or cables allow up to 96 ports at 50G, 25G or 10G. This SKU has no MACsec and no onboard CPU, and uses the standard route scale profile.

It installs in the DCS-7816L, DCS-7816, DCS-7812, DCS-7808 and DCS-7804 chassis and runs Arista EOS, the same software image used across all Arista platforms. Typical power draw is 398 W, with a maximum of 462 W.

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

Features

- Virtual Output Queuing (VOQ) architecture with deep packet buffering to avoid head-of-line blocking
- Wire-speed, non-blocking forwarding on all 48 x 100G ports
- Flexible 10G, 25G, 40G, 50G and 100G operation using breakout optics or cables
- FlexRoute technology for Internet-scale routing with flexible L2/L3 table allocation
- Runs Arista EOS with a single software image across all Arista platforms
- Accelerated sFlow, PTP, LANZ and DANZ support
- Supports EVPN/VXLAN, MPLS/Segment Routing and ECMP designs
- Installs in a chassis with redundant supervisors, fabric modules and N+N power supplies

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 ports: 48
- Maximum 50G ports: 96
- Maximum 40G ports (QSFP+): 48
- Maximum 25G ports: 96
- Maximum 10G ports: 96
- Maximum total interfaces: 96
- Throughput (FDX): 4.8 Tbps (9.6 Tbps)
- Forwarding rate: 2 Bpps
- Port buffer: 8 GB
- Encryption: No MACsec on any port
- Latency (7800R3 platform): Under 4 microseconds (64 bytes)
- ECMP: 512-way
- TCAM ACL entries (per chip): 24K
- MAC addresses (L3 profile): 224K
- ARP entries (L3 profile): 88K
- IPv4 unicast routes (L3 profile): 1450K
- IPv6 unicast routes (L3 profile): 433-483K
- Typical (max) power: 398 W (462 W), measured at 25 C ambient with 50% load on all ports, excluding optics
- Dimensions (W x H x D): 48.1 x 5.4 x 45.2 cm (18.9 x 2.1 x 17.8 in)
- Weight: 9.1 kg (20 lbs)
- Operating temperature: 0 to 40 C (32 to 104 F)
- Storage temperature: -40 to 70 C (-40 to 158 F)
- Relative humidity: 5 to 90%
- Operating altitude: 0 to 3,000 m (10,000 ft)

FAQs

Q: Which chassis does this line card install in?
A: It installs in the Arista 7800R3 chassis: DCS-7816L, DCS-7816, DCS-7812, DCS-7808 and DCS-7804.

Q: Does this line card support MACsec?
A: No. This SKU has no MACsec on any port. Choose a MACsec-capable 7800R3 line card if link encryption is required.

Q: What speeds and optics do the QSFP ports support?
A: The QSFP100 ports support 100G optics including SR4, LR4, CWDM4, FR, DR, PSM4, AOC and CR4 DAC. They also take 40G QSFP+ optics and cables, and 50G, 25G and 10G breakout cables. Check the Arista transceiver datasheet and EOS release notes for the minimum EOS version per module.

Q: How much power does the line card draw?
A: Typical draw is 398 W and maximum is 462 W, measured at 25 C with 50% port load and excluding optics. It is powered from the host chassis power supplies.

Q: What software does it run?
A: It runs Arista EOS, the same software image used on all Arista platforms.

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