Arista DCS-7816L-CH | 7800R3 16-Slot Modular Chassis Switch, 72 KW, AC/DC

SKU:DCS-7816L-CH

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Description

The DCS-7816L-CH is the 16-slot chassis of the Arista 7800R3 Series, a modular data centre switch and router platform. It is built for large-scale layer 2 and layer 3 cloud data centres, EVPN/VXLAN overlay networks, internet peering, secure data centre interconnect with long-haul optics, and MPLS or segment routing cores.

The chassis provides 16 line card slots, 2 supervisor slots in a 1+1 arrangement and 6 fabric module slots. Fully populated, it scales to 576 x 400G, 2304 x 100G or 4608 x 50G ports with up to 460 Tbps and 96 Bpps of system throughput. Power comes from 24 PSU slots with a 72 KW maximum budget, supporting AC or DC supplies, and the extended rack kit option suits deeper racks. It occupies 32 RU with front-to-rear airflow, and the supervisor, power, fabric and cooling modules are all hot swappable.

The chassis is an empty frame. It requires six DCS-7816LR3-FM fabric modules and at least one DCS-7816-SUP or DCS-7816-SUP1S supervisor, and accepts 7800R3, 7800R3A, 7800R3AK and 7800R3K line cards. Optional per-slot EOS software licences such as LIC-MOD-4-E, LIC-MOD-4-V, LIC-MOD-4-V2, LIC-MOD-4-Z and LIC-MOD-4-FLX are ordered separately.

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

Features

- Fully scheduled, lossless cell-spraying fabric with per-port virtual output queuing to avoid head-of-line blocking
- Deep packet buffers of up to 24 GB per line card
- 100G, 200G and 400G port modes, 800G ready, with 400G ZR and ZR+ support
- Dual-input grid-redundant power supplies with configurable PSU redundancy up to N+N
- 1+1 supervisor redundancy and fabric module redundancy with graceful degradation
- Cloud-grade routing including FlexRoute, EVPN/VXLAN and MPLS (LDP, RSVP-TE, SR-TE, TI-LFA)
- MACsec, IPsec and VXLANsec encryption, depending on line card
- Arista EOS with Zero Touch Provisioning, LANZ microburst detection, accelerated sFlow and IEEE 1588 PTP
- Open programmability via eAPI, NETCONF, RESTCONF, gNMI, OpenConfig, Linux shell, Python and C++
- CloudVision management support

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

- Line card slots: 16
- Supervisor slots: 2 (1+1 redundancy)
- Fabric module slots: 6 (DCS-7816LR3-FM required)
- Power supply slots: 24 (72 KW maximum power budget)
- Maximum 400G density: 576 ports
- Maximum 100G density: 2304 ports
- Maximum 50G density: 4608 ports
- Maximum throughput: 460 Tbps / 96 Bpps
- Latency: under 4 microseconds (64 bytes)
- Maximum power consumption: 37,914 W (40 C ambient, 100% load, excludes optics)
- Rack units: 32 RU
- Dimensions (H x W x D): 141.3 x 44.1 x 94 cm (55.6 x 17.4 x 37 in)
- Weight (chassis only): 219 kg (483 lbs)
- Weight (full system): 691 kg (1523 lbs)
- Airflow: front-to-rear, 985 cfm typical, 4826.1 cfm maximum
- Supervisor control plane: multi-core x86 CPU, 64GB DRAM, 4GB Flash
- 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 this chassis need a software licence?
A: The chassis itself is an empty frame and no licence is tied to the SKU. Arista EOS runs on the supervisor modules, and optional per-slot licences such as LIC-MOD-4-E (enhanced routing), LIC-MOD-4-V (virtualisation) and LIC-MOD-4-Z (monitoring and provisioning) are ordered separately.

Q: What power supplies does the DCS-7816L-CH use?
A: It has 24 PSU slots with a 72 KW maximum power budget and takes 3000W hot-swappable supplies: PWR-D1-3041-AC (200-240VAC), PWR-D2-3041-DC (-48 to -60VDC) and PWR-D4-3041-AC (200-277VAC or 240-380VDC).

Q: Which modules are required to make the chassis operational?
A: You need six DCS-7816LR3-FM fabric modules and at least one DCS-7816-SUP or DCS-7816-SUP1S supervisor. These supervisors are shared with the 7816 and 7812 chassis. The DCS-7800-SUP types are for the 7808 and 7804 chassis.

Q: Which line cards does it support?
A: It supports the 7800R3, 7800R3A, 7800R3AK and 7800R3K line card families, including the 36x OSFP 7800R3A-36P, 36x QSFP-DD 7800R3-36D, 48x QSFP100 7800R3-48CQ and 72x SFP25 7800R3K-72Y.

Q: Which rack kits fit this chassis?
A: KIT-7800-RK-L provides the extended-depth rack kit, and KIT-7816L-RK-HD is available for configurable in-rack shipment. The chassis occupies 32 RU.

Q: How does this differ from DCS-7816L-CH-CFG?
A: DCS-7816L-CH-CFG is the same empty chassis packaged for configured shipment. DCS-7816L-CH is the standard chassis SKU.