• Silver-colored arista dcs-7800r3k-72y-lc rack-mounted network switches with 72 25g sfp28 ports and ventilation slots
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Arista

Arista DCS-7800R3K-72Y-LC | 7800R3K 72-Port 25G SFP Line Card, 4GB Buffer, 5M Routes

DCS-7800R3K-72Y-LC

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Description

This 72-port 25G SFP line card is built for the Arista 7800R3 Series modular data centre chassis. It is a 7800R3K (large routes) card, which extends FlexRoute to over 5M routes, making it suited to internet edge, peering and backbone routing as well as high-density 25G server and leaf aggregation in large data centres, cloud and service provider networks.

Each of the 72 SFP ports runs at 10G or 25G, and up to 32 ports can operate at 50G. The card provides 4 GB of port buffer, wire-speed forwarding of 1 Bpps and 2.6 Tbps forwarding capacity. It has no MACsec. Typical power draw is 142 W, with a maximum of 178 W, excluding optics.

The line card is hot-swappable and fits the DCS-7804, 7808, 7812, 7816 and 7816L chassis. It can be mixed with other 7800R3 and 7800R3A line cards in the same chassis and connects in a non-blocking full mesh to all fabric modules. It runs under the chassis EOS software, and optional chassis-level licences cover enhanced routing, monitoring and provisioning, and full routing.

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

Features

- FlexRoute for Internet-scale routing, expanded to over 5M routes on 7800R3K cards
- Algorithmic ACLs for flexible pattern matching, policy based forwarding and telemetry
- Accelerated sFlow at high density with no impact on packet forwarding
- Wire-speed forwarding with a distributed virtual output queue architecture and lossless fabric that eliminates head-of-line blocking
- Deep packet buffers
- Non-blocking full mesh connection to all fabric modules
- Hot-swappable line card that works with any combination of 7800R3 and 7800R3A line cards in the same chassis
- Flexible 10G, 25G and 50G operation using optics or 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

- Ports: 72x SFP 25G
- Maximum 10G ports: 72
- Maximum 25G ports: 72
- Maximum 50G ports: 32
- Port buffer: 4 GB
- Forwarding capacity: 2.6 Tbps
- Packet forwarding rate: 1 Bpps
- Routing scale: FlexRoute large routes, over 5M routes
- Encryption: No MACsec
- Typical power: 142 W
- Maximum power: 178 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: 8.2 kg (18 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 (0 to 10,000 ft)
- Supported chassis: DCS-7816L, DCS-7816, DCS-7812, DCS-7808, DCS-7804

FAQs

Q: Which chassis does this line card fit?
A: It fits the Arista 7804R, 7808R, 7812R, 7816R and 7816LR chassis, which are the DCS-7804, DCS-7808, DCS-7812, DCS-7816 and DCS-7816L. It can be mixed with other 7800R3 and 7800R3A line cards in the same chassis.

Q: Does the line card need its own licence?
A: The line card runs under the chassis EOS software. Optional chassis-level licences cover enhanced routing features such as OSPF, BGP, ISIS and PIM, monitoring and provisioning, and full routing. Encryption licences do not apply because this card has no MACsec.

Q: What optics and cables does it take?
A: The ports take SFP optics and DACs at 10G, 25G and 50G. Check the Arista Transceiver datasheet and the EOS release notes for the supported optics and the minimum EOS release.

Q: How does this card differ from other 7800R3 72-port cards?
A: This is the 7800R3K variant, which extends FlexRoute to over 5M routes, and it provides 4 GB of port buffer. It has no MACsec.

Q: What power does the card draw?
A: Typical draw is 142 W and the maximum is 178 W, excluding optics. The chassis uses redundant hot-swappable 3000W AC or DC power supplies.

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