Arista 7800R3 Series 400G Core Router/Switch
Brand: Arista | Category: Network Switches
SKU: ARIS-DCS7804R3 | Part #: DCS-7804R3 | MPN: DCS-7804R3
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About the Arista 7800R3 Series 400G Core Router/Switch
The Arista 7800R3 Series represents a next-generation core routing and switching architecture designed for large-scale WAN edge and data center core environments. Built on a modular linecard design with integrated 400G coherent optical interfaces, the platform delivers multi-terabit switching fabric capacity with deterministic latency characteristics suitable for carrier-grade and enterprise backbone operations. The R3 generation incorporates advanced forwarding engines, redundant supervisor architectures, and flexible slot configurations enabling operators to scale capacity and feature density according to specific network topology requirements.
The 7800R3 architecture emphasizes modularity and operational flexibility through hot-swappable line cards, power supply redundancy (N+1/N+N), and fabric resiliency mechanisms. Support for extensive routing protocols, segment routing, EVPN, and advanced QoS frameworks positions the platform for multi-tenant carrier networks and complex enterprise WANs. The coherent 400G optical integration reduces transceiver cost and physical footprint while maintaining backward compatibility with 100G and 200G client interfaces through flexible optics support.
The platform launched in Q1 2024 addresses sustained demand from telecommunications operators and hyperscale enterprises managing massive core network expansions. Design emphasis on power efficiency, modular upgrade paths, and integrated telemetry/observability features reflects current operator requirements for sustainable and manageable backbone infrastructure at scale.
Ideal for
- Tier-1 telecom operator core backbone aggregation and long-haul WAN interconnect
- Hyperscale data center core fabric for multi-region, multi-POD network topologies
- Content delivery network (CDN) edge aggregation and regional peering hubs
- Enterprise WAN edge consolidation with multi-gigabit per second aggregate throughput requirements
- Financial services backbone supporting microsecond-latency trading network requirements
- Cloud service provider regional network aggregation and customer interconnect platforms
Technical specifications
| Manufacturer | Arista |
| Model | 7800R3 Series |
| Form Factor | Modular chassis-based system |
| Switching Fabric Capacity | Up to 51.2 Tbps (base configuration scalable) |
| Maximum Line Cards | 12 modular slots (configurable) |
| 400G Interfaces | Up to 128 × 400GBASE-DR4/LR4/FR4 coherent optical ports |
| 100G Interfaces | Up to 768 × 100GBASE ports (via line card composition) |
| Routing Throughput | Up to 51.2 Tbps IP forwarding capacity |
| Packet Forwarding Rate | Up to 76.8 Bpps (billion packets per second) |
| Memory (Routing/Control) | 256 GB DRAM control plane memory (standard) |
| Forwarding Table Capacity | 32 million IPv4 + 8 million IPv6 routes |
| Switching Latency | Sub-microsecond (cut-through forwarding mode) |
| Supervisor Modules | Redundant (N+1 or N+N options available) |
| Power Supply Redundancy | N+1 or N+N configurations |
| Maximum Power Consumption | 8.5 kW (base); scales with line card configuration |
| Operating Temperature Range | 0°C to 55°C ambient |
| Physical Dimensions | 19-inch rack-mountable chassis (10 RU height) |
| Routing Protocols | BGP, OSPF, IS-IS, VRRP, multicast (PIM) |
| Overlay/Underlay | EVPN, VXLAN, segment routing (SR-MPLS, SRv6), GRE |
| QoS Capabilities | 8 traffic classes, weighted fair queuing, hierarchical policing, WRED |
| Telemetry/Monitoring | Streaming telemetry (gRPC), NetFlow, SNMP, sFlow integration |
| Management Interfaces | Out-of-band Ethernet, serial console, USB, optional IPMI |
| Launch Timeline | Q1 2024 |
Available from Omnixon Global. Submit an RFQ and our team will confirm configuration and availability for your order.
Technical Specifications
| Brand | Arista |
| Category | Network Switches |
| SKU | ARIS-DCS7804R3 |
| Part Number | DCS-7804R3 |
| Condition | New |
| Model | 7800R3 Series |
| Form Factor | Modular chassis-based system |
| Switching Fabric Capacity | Up to 51.2 Tbps (base configuration scalable) |
| Maximum Line Cards | 12 modular slots (configurable) |
| 400G Interfaces | Up to 128 × 400GBASE-DR4/LR4/FR4 coherent optical ports |
| 100G Interfaces | Up to 768 × 100GBASE ports (via line card composition) |
| Routing Throughput | Up to 51.2 Tbps IP forwarding capacity |
| Packet Forwarding Rate | Up to 76.8 Bpps (billion packets per second) |
| Memory (Routing/Control) | 256 GB DRAM control plane memory (standard) |
| Forwarding Table Capacity | 32 million IPv4 + 8 million IPv6 routes |
| Switching Latency | Sub-microsecond (cut-through forwarding mode) |
| Supervisor Modules | Redundant (N+1 or N+N options available) |
| Power Supply Redundancy | N+1 or N+N configurations |
| Maximum Power Consumption | 8.5 kW (base); scales with line card configuration |
| Operating Temperature Range | 0°C to 55°C ambient |
| Physical Dimensions | 19-inch rack-mountable chassis (10 RU height) |
| Routing Protocols | BGP, OSPF, IS-IS, VRRP, multicast (PIM) |
| Overlay/Underlay | EVPN, VXLAN, segment routing (SR-MPLS, SRv6), GRE |
| QoS Capabilities | 8 traffic classes, weighted fair queuing, hierarchical policing, WRED |
| Telemetry/Monitoring | Streaming telemetry (gRPC), NetFlow, SNMP, sFlow integration |
| Management Interfaces | Out-of-band Ethernet, serial console, USB, optional IPMI |
| Launch Timeline | Q1 2024 |