• Silver-colored arista dcs-7800r3ak-36dm-lc rack-mounted network switches with 36-port 400g line card and ventilation slots
1 1

Arista

Arista DCS-7800R3AK-36DM-LC | 7800R3 36-Port 400G QSFP-DD Line Card, Large Routes

DCS-7800R3AK-36DM-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 7800R3 36-port 400GbE QSFP-DD line card is built for the 7800R3 modular chassis family. It suits large-scale data centre spine and leaf designs, internet peering and edge routing, secure data centre interconnect with 400ZR/ZR+ optics, MPLS/SR-TE cores and AI/ML or HPC back-end networks.

Each card provides 36 QSFP-DD ports delivering 14.4 Tbps of throughput (28.8 Tbps full duplex) with 16 GB of deep packet buffer. As the large routes (R3AK) variant with Enhanced MACsec/TunnelSec, the FlexRoute engine scales to over 5M routes, and line-rate AES-256-GCM encryption covering MACsec, IPsec and VXLANsec is available on all ports. Ports also operate at 100G, 200G and 40G (using QSFP+), with up to 232 interfaces in total through breakout. Typical power draw is 578 W, up to 794 W, excluding optics. TunnelSec and MACsec encryption are EOS licensed features that need a licence file to enable.

The card fits Arista 7804, 7808, 7812, 7816 and 7816L chassis and works alongside other 7800R3 and 7800R3A line cards. It requires the matching 7800R3 fabric modules and a supervisor module in the chassis.

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

Features

- FlexRoute engine supports the full Internet routing table in hardware, scaling past 5M routes on this large-route card
- Line-rate TunnelSec encryption (AES-256-GCM) with MACsec (IEEE 802.1AE), IPsec and VXLANsec on all speeds from 10G to 400G
- Fully scheduled, cell-based lossless fabric with Virtual Output Queuing
- Per-port speed changes and breakout modes work independently of other ports on the card
- Optimised for 400ZR/ZR+ DWDM optics, with 100G breakout and 400G support
- Accelerated sFlow, algorithmic ACLs, LANZ/DANZ telemetry, EVPN/VXLAN and MPLS/SR-TE
- Runs Arista EOS and is hot-swappable in the 7800R3 modular 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 400GbE QSFP-DD
- Throughput: 14.4 Tbps (28.8 Tbps full duplex)
- Port buffer: 16 GB
- Routes: FlexRoute scales to over 5M routes (R3AK large routes)
- Encryption: TunnelSec (MACsec, IPsec, VXLANsec) on all ports, AES-256-GCM
- Maximum 400G interfaces: 36
- Maximum 100G interfaces: 144
- Maximum 50G interfaces: 232
- Maximum 25G interfaces: 232
- Maximum 10G interfaces: 232
- Maximum 40G interfaces (using QSFP+): 36
- Maximum total interfaces: 232
- ECMP: 512-way
- Typical power: 578 W (maximum 794 W), 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: 11.66 kg (25.7 lbs)
- Chassis support: DCS-7816L, DCS-7816, DCS-7812, DCS-7808, DCS-7804
- Operating temperature: 0 to 40 C
- Storage temperature: -40 to 70 C
- Relative humidity: 5 to 90%
- Operating altitude: 0 to 3,000 m (10,000 ft)

FAQs

Q: Which chassis does this line card fit?
A: It fits Arista 7804, 7808, 7812, 7816 and 7816L chassis. The chassis must have the matching 7800R3 fabric modules and a supervisor module installed.

Q: Does the encryption need a licence?
A: Yes. TunnelSec and MACsec encryption are EOS licensed features that need a licence file to enable. Arista lists LIC-MOD-x-MACSEC for MACsec and LIC-MOD-x-ENCR for the Enhanced Security Encryption licence covering TunnelSec.

Q: How does this differ from other 36-port 400G 7800R3 cards?
A: This is the large routes (R3AK) variant with Enhanced MACsec/TunnelSec, so FlexRoute scales to over 5M routes and line-rate encryption is supported on all ports.

Q: What power does it draw?
A: Typical power is 578 W and maximum is 794 W per card, measured at 25 C ambient with 50% load, excluding optics. Chassis power comes from 3 kW PSUs such as PWR-D1-3041-AC, PWR-D2-3041-DC or PWR-D4-3041-AC.

Q: What optics and speeds does it support?
A: The 36 QSFP-DD ports take 400G optics and cables and also support 100G and 200G modes and 40G using QSFP+. The card is optimised for 400ZR/ZR+ DWDM optics.

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