• Silver-colored arista dcs-7800r3a-36dm-lc rack-mounted network switches with 36-port 400g qsfp-dd and macsec features
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Arista

Arista DCS-7800R3A-36DM-LC | 7800R3 36-Port 400G QSFP-DD Line Card, MACsec

DCS-7800R3A-36DM-LC

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Description

The Arista 7800R3 36-port 400G QSFP-DD line card is a modular interface card for the 7800R3 chassis family. It suits secure data centre interconnect, encrypted leaf-spine links, Internet peering, carrier edge and core, EVPN, 5G and metro aggregation roles.

The card provides 36 x 400GbE QSFP-DD ports with 14.4 Tbps of throughput (28.8 Tbps full duplex) and a 16 GB port buffer. Each 400G port can run as 400G or break out to 4 x 100G, giving up to 144 x 100G, 216 x 10G/25G/50G or 36 x 40G per card. TunnelSec encryption (MACsec, IPsec and VXLANsec) with AES-256-GCM runs at wire speed on all ports. Encryption is an EOS licensed feature and needs a licence file to enable it. This is the spare variant, which has no line card CPU. Typical power draw is 548 W and maximum is 764 W, excluding optics.

It fits the DCS-7804, DCS-7808, DCS-7812 and DCS-7816 chassis and interoperates with other 7800R3 100G and 400G line cards. Ports accept 400G QSFP-DD optics and cables, and QSFP+ at 40G.

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

Features

- Wire-speed AES-256-GCM encryption from 10G to 400G with MACsec, IPsec and VXLANsec (TunnelSec)
- Per-port MACsec configuration, so encrypted and standard links can be mixed on one card
- Deep-buffer virtual output queue (VOQ) architecture avoids head-of-line blocking
- FlexRoute engine supports Internet-scale routing, plus Accelerated sFlow and large-scale algorithmic ACLs
- Each 400G port runs as 400G or 4 x 100G, and interoperates with other 7800R3 line cards
- Runs Arista EOS with CloudVision, LANZ, ZTP, EVPN, PTP and open APIs (JSON-RPC, NETCONF)

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: 36 x 400GbE QSFP-DD
- Throughput: 14.4 Tbps (28.8 Tbps full duplex)
- Encryption: TunnelSec (MACsec, IPsec, VXLANsec) on all ports
- Port buffer: 16 GB
- Line card CPU: No
- Maximum 400G interfaces: 36
- Maximum 100G interfaces: 144
- Maximum 10G, 25G and 50G interfaces: 216
- Maximum 40G interfaces (using QSFP+): 36
- Typical power: 548 W
- Maximum power: 764 W (excluding optics)
- Chassis support: DCS-7816, DCS-7812, DCS-7808, DCS-7804
- 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)
- 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. Encryption is an EOS licensed feature and needs a licence file to enable it. Arista offers LIC-MOD-x-MACsec for MACsec only and LIC-MOD-x-ENCR for Enhanced Security, covering TunnelSec and MACsec, matched to the chassis slot count.

Q: Which chassis does this line card fit?
A: It fits the Arista DCS-7804, DCS-7808, DCS-7812 and DCS-7816 chassis (7804R, 7808R, 7812R and 7816R) and interoperates with other 7800R3 100G and 400G line cards.

Q: How much power does the card draw?
A: Typical draw is 548 W and maximum is 764 W per card, measured at 25 C ambient with 50% load on all ports. Optics power is excluded. Power is supplied by the chassis.

Q: Can the 400G ports be broken out to lower speeds?
A: Yes. Each 400G port can run as 400G or 4 x 100G. The card supports up to 144 x 100G, 216 x 10G/25G/50G using breakout, or 36 x 40G using QSFP+.

Q: How does this SKU differ from the chassis-shipped variant?
A: This is the spare SKU, supplied as a standalone line card. The '#' variant is the one that ships installed in a chassis. The card has 36 x 400G QSFP-DD ports with TunnelSec encryption and no line card CPU.

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