• Silver-colored arista dcs-7800r3-36d-lc rack-mounted network switches with 36 ports and ventilation slots front view
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Arista

Arista DCS-7800R3-36D-LC | 7800R3 36-Port 400G QSFP-DD Line Card, No MACsec

DCS-7800R3-36D-LC

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Description

The DCS-7800R3-36D-LC is a 36-port 400GbE line card for the Arista 7800R3 Series modular data centre chassis. It suits large-scale layer 2 and layer 3 cloud designs, overlay networks, virtualised or traditional enterprise data centres, internet peering and secure data centre interconnect.

Each card provides 36 QSFP-DD ports at wire speed, with 14.4 Tbps of forwarding capacity and 24 GB of deep port buffer. Ports break out to 200G, 100G, 50G, 25G and 10G with suitable optics or cables, giving up to 144 x 100G ports or up to 288 x 10G, 25G or 50G interfaces per card. This is the non-MACsec model with standard route scale, so encryption is not offered on this SKU. Typical power draw is 825 W, with a 1136 W maximum.

The card fits the Arista DCS-7816L, DCS-7816, DCS-7812, DCS-7808 and DCS-7804 chassis, working with the DCS-7800-SUP, SUP1A, SU1S, DCS-7816-SUP and DCS-7816-SU1S supervisors and the 7808R3 and 7804R3 fabric modules. It supports QSFP-DD optics and cables including 400GBASE-CR8, AOC, SR8, DR4, XDR4, FR4, LR4, PLR4 and ZR.

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

Features

- Deep-buffer, non-blocking VOQ architecture
- Hot-swappable line card design, with redundant supervisor, power, fabric and cooling modules and front-to-rear airflow in the chassis
- Runs Arista EOS, a single software image across all Arista switches, with stateful fault containment and repair
- LANZ, ZTP and streaming telemetry for monitoring and provisioning
- EVPN, VXLAN, MLAG and ECMP for overlay and virtualised designs
- Large routing tables for internet peering and secure data centre interconnect
- Standards-based QSFP-DD interfaces supporting 400G, 200G, 100G, 50G, 25G and 10G speeds with optics or breakout cables

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

- Series: 7800R3-36D
- Ports: 36 x 400G QSFP-DD
- Forwarding capacity: 14.4 Tbps (28.8 Tbps full duplex)
- Forwarding rate: up to 6 Bpps
- Port buffer: 24 GB
- Maximum 400G ports: 36
- Maximum 100G ports: 144
- Maximum 50G, 25G and 10G interfaces: 288
- Maximum 40G ports (using QSFP+): 36
- Encryption: No (non-MACsec model)
- ECMP: 512-way
- TCAM ACL entries per chip: 24K
- Typical power: 825 W (measured at 25 C, 50% load on all ports, excluding optics)
- Maximum power: 1136 W
- 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: 10 kg (22 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)
- Chassis support: DCS-7816L, DCS-7816, DCS-7812, DCS-7808, DCS-7804

FAQs

Q: Does this line card need a software licence?
A: It runs Arista EOS. Optional per-chassis licences are available separately, including LIC-MOD-x-E Enhanced, -V Virtualization, -V2, -Z Monitoring and Provisioning and -FLX for full routing up to 2M routes. Encryption is a licensed feature only on MACsec models, not this non-M SKU.

Q: Which chassis and supervisors does it work with?
A: It fits the DCS-7816L, DCS-7816, DCS-7812, DCS-7808 and DCS-7804 chassis. Supported supervisors are DCS-7800-SUP, SUP1A, SU1S, DCS-7816-SUP and DCS-7816-SU1S, with DCS-7808R3-FM, -FM2 and DCS-7804R3-FM fabric modules.

Q: What optics and cables can I use in the QSFP-DD ports?
A: Supported options include 400GBASE-CR8 (1 to 2.5 m), AOC (up to 30 m), SR8 (100 m), DR4 (500 m), XDR4 and FR4 (2 km), LR4 and PLR4 (10 km) and ZR (120 km with optical amplification). The 200G, 100G, 50G and 25G breakout cables listed in the datasheet are also supported.

Q: How much power does the card draw?
A: Typical draw is 825 W and the maximum is 1136 W, measured at 25 C with 50% load on all ports and excluding optics. Power is supplied by the chassis power supplies.

Q: How does this card differ from the MACsec version?
A: This is the non-M model with standard route scale and no MACsec encryption. Choose a MACsec or TunnelSec 7800R3 line card if you need line-rate encryption.

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