• Silver-colored Arista DCS-7800R3A-36PM-LC rack-mounted network switches with 36 ports and macsec encryption features
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Arista

Arista DCS-7800R3A-36PM-LC | 7800R3 36-Port 400G OSFP Line Card, TunnelSec, 16GB

DCS-7800R3A-36PM-LC

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Description

The 7800R3 36-port 400G OSFP line card is built for Arista 7800R3 modular data centre switch routers. It suits large-scale data centre spine and leaf, Internet peering, secure data centre interconnect with 400ZR optics, carrier edge and core services, and AI/ML back-end training networks.

Each line card provides 36 x 400GbE OSFP ports with 14.4 Tbps of throughput (28.8 Tbps full duplex) and a 16 GB port buffer. The 400G ports can be broken out to 100G, 50G, 25G and 10G depending on transceiver and cable support, for up to 232 interfaces in total. This variant includes enhanced MACsec and TunnelSec encryption on all ports, covering MACsec, IPsec and VXLANsec at line rate. Typical power draw is 548 W with a maximum of 764 W, excluding optics.

The line card is supported in the DCS-7816L, DCS-7816, DCS-7812, DCS-7808 and DCS-7804 chassis and is paired with 7800R3 fabric and supervisor modules. It accepts 10G to 400G OSFP-form-factor optics and cables, including 400ZR. It runs Arista EOS, and TunnelSec encryption is enabled with an EOS licence file.

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

Features

- Line-rate AES-256-GCM TunnelSec encryption with IEEE 802.1AE MACsec, IPsec (RFC 4303) and VXLANsec on all interface speeds from 10G to 400G
- Fully scheduled, lossless cell-spraying fabric with per-port Virtual Output Queuing, which eliminates head-of-line blocking
- Optimised for high-power 400ZR OSFP optics (DWDM, up to 120 km) for data centre interconnect
- 400G port breakout to 100G, 50G, 25G and 10G, depending on transceiver and cable support
- Hot-swappable modular design with redundant supervisor, power, fabric and cooling modules
- Arista EOS with CloudVision, LANZ, ZTP, PTP (IEEE 1588) and JSON-RPC/NETCONF programmable APIs
- FlexRoute technology for Internet-scale routing and EVPN/VXLAN, MPLS and SR-TE services

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: 36x 400GbE OSFP
- Throughput: 14.4 Tbps (28.8 Tbps FDX)
- Port buffer: 16 GB
- Encryption: TunnelSec on all ports (MACsec, IPsec, VXLANsec)
- Max 10G interfaces: 232
- Max 25G interfaces: 232
- Max 40G interfaces (using QSFP+): 36
- Max 50G interfaces: 232
- Max 100G interfaces: 144
- Max 400G interfaces: 36
- Max total interfaces: 232
- Latency: under 4 microseconds (64 bytes)
- Typical power: 548 W (maximum 764 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: 11.5 kg (25.35 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 (0 to 10,000 ft)

FAQs

Q: Does TunnelSec encryption need a licence?
A: Yes. TunnelSec is an EOS licensed feature and needs a licence file to enable it, for example LIC-MOD-4-ENCR for 16-slot chassis. Equivalent encryption licences are available by chassis slot count.

Q: Which chassis does this line card fit?
A: It is supported in the DCS-7816L, DCS-7816, DCS-7812, DCS-7808 and DCS-7804 chassis. It works alongside 7800R3 fabric modules and supervisor modules.

Q: How much power does the line card draw?
A: Typical draw is 548 W and the maximum is 764 W per line card, excluding optics. The chassis is powered by 3000 W supplies 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 OSFP ports take 10G to 400G OSFP-form-factor optics and cables, including 400ZR. The 400G ports can break out to 100G, 50G, 25G and 10G depending on the transceiver and cable used.

Q: Which EOS software licences are available?
A: Optional EOS licences are sold per chassis slot count. They include Enhanced (LIC-MOD-x-E for OSPF, BGP, ISIS and PIM), Virtualisation (LIC-MOD-x-V), Security and Partner Integration (LIC-MOD-x-V2) and Monitoring and provisioning (LIC-MOD-x-Z).

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