• Gray metal server rack with black ventilation slots and mounting brackets on the back of arista dcs-7800r3a-36dm2-lc line card
1 1

Arista

Arista DCS-7800R3A-36DM2-LC | 7800R3A 36x 400G QSFP-DD Line Card, TunnelSec, CPU

DCS-7800R3A-36DM2-LC

Stock Status: Enquire

Request Quote
Sale Sold out
Shipping calculated at checkout.
20-min response

Need a quote or bulk pricing? Answered within 20 minutes, Sydney business hours.

Description

The Arista 7800R3A 36-port 400GbE QSFP-DD line card is built for the 7800R3 modular chassis family. It includes an onboard CPU and Enhanced MACsec encryption with TunnelSec on all ports, making it suited to large-scale data centre spine and leaf, cloud and internet peering, secure data centre interconnect and 400G-ZR DWDM transport.

Each line card provides 36 x 400G QSFP-DD ports with 14.4 Tbps of throughput (28.8 Tbps FDX) and a 16 GB port buffer. Ports can run in 100G, 200G and 400G modes, with breakout to 10G, 25G and 50G for up to 232 interfaces per card. Typical power draw is 578 W, with a maximum of 794 W, excluding optics. Encryption is an EOS licensed feature, so a licence file is needed to enable MACsec and TunnelSec.

The card fits the DCS-7816L, DCS-7816, DCS-7812, DCS-7808 and DCS-7804 chassis, which also require a supervisor module and fabric modules. The QSFP-DD ports accept 400G optics and cables such as CR8, AOC, SR8, DR4, XDR4, FR4, LR4, PLR4 and 400G-ZR, plus 200G, 100G, 50G and 25G breakout cables.

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
- System-level latency under 4 microseconds (64 bytes)
- Wire-speed TunnelSec encryption (MACsec IEEE 802.1AE, IPsec, VXLANsec) with AES-256-GCM from 10G to 400G
- FlexRoute, Accelerated sFlow and algorithmic ACL support
- Optimised for high-power 400G-ZR (up to 120 km) QSFP-DD modules
- Supports 100G, 200G and 400G modes, with breakout to 10G, 25G and 50G
- Same EOS image across the platform, with open APIs (JSON-RPC, NETCONF), CloudVision, LANZ, ZTP and IEEE 1588 PTP
- Interoperates with all 7800R3 and 7800R3A line cards in the same chassis

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.

View full details

specs-tabs

Technical Specifications

FAQs

Technical Specifications

- Ports: 36x QSFP-DD
- Maximum 400G interfaces: 36
- Maximum 100G interfaces: 144
- Maximum 50G, 25G and 10G interfaces: 232
- Maximum 40G interfaces (using QSFP+): 36
- Throughput: 14.4 Tbps (28.8 Tbps FDX)
- Port buffer: 16 GB
- Encryption: TunnelSec on all ports
- Typical power: 578 W (measured at 25 C ambient, 50% load on all ports, excluding optics)
- Maximum power: 794 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: 11.73 kg (25.85 lbs)
- Chassis support: DCS-7816L, DCS-7816, DCS-7812, DCS-7808, DCS-7804
- 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: Does the encryption need a licence?
A: Yes. MACsec and TunnelSec are EOS licensed features that need a licence file to enable. Options include LIC-MOD-x-MACSEC for MACsec and LIC-MOD-x-ENCR for Enhanced Security Encryption with TunnelSec and MACsec, sized by chassis slot count (4, 8, 12 or 16).

Q: Which chassis does this line card fit?
A: It fits the Arista DCS-7816L, DCS-7816, DCS-7812, DCS-7808 and DCS-7804 chassis. The chassis also needs a supervisor module and fabric modules.

Q: How is the line card powered?
A: It draws power from the chassis power supplies, which are dual-input and grid redundant, with PSU redundancy configurable up to N+N. Typical consumption is 578 W and maximum is 794 W per line card, excluding optics.

Q: What optics and cables work in the QSFP-DD ports?
A: The ports accept 400G QSFP-DD optics and cables including CR8, AOC, SR8, DR4, XDR4, FR4, LR4, PLR4 and 400G-ZR, as well as 200G, 100G, 50G and 25G breakout cables. QSFP+ 40G and QSFP 100G modules are also supported.

Q: Can it be mixed with other 7800R3 line cards?
A: Yes. It interoperates with all 7800R3 and 7800R3A line cards installed in the same chassis.

Related Products

View all Switch Modules & Power Supplies

Recently Viewed

  • Request a Quote

    Looking for competitive pricing? Submit a request, and our team will provide a tailored quote that fits your needs.

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Call us Now  

  • Contact Us Directly

    Have a question or need immediate assistance? Call us for expert advice and real-time support.

    Contact us