WD25000 Data Center Cloud Core Series Switches

High-capacity switching platform designed for large cloud and modern data centre networks. Features CLOS+ multi-grade architecture, independent control/detection/maintenance engines, and support for high-density 40G/100G interfaces.

Switching Capacity
Up to 1032 Tbps
Forwarding Rate
Up to 115,200 Mpps
Redundancy
1+1 / N+1 / N+M

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WD25000 Data Center Cloud Core Series
Complete technical specifications for all WD25000 models
EVPN-VXLAN
Technology
RoCE
Technology
VSS/MDC
Technology
100G/40G
Technology
Data Center Core • Cloud-Optimized • High Availability • Scalable Fabric

WD25000 Data Center Cloud Core Series

A high-performance, scalable core switching platform built for next-generation data center architectures. Supports EVPN-VXLAN fabrics, lossless RoCE, advanced virtualization, and carrier-grade high availability.

CLOS+ multi-grade architecture with independent engines
VSS and MDC virtualization for multi-tenant isolation
Full EVPN-VXLAN fabric automation and scaling
RoCE with PFC/ECN/DCBX/ETS for lossless Ethernet
Distributed buffering and precision QoS
DC-class HA with <50ms failover and NSR/GR

Key Applications

Cloud Data CentresScalable EVPN-VXLAN fabric for secure, automated virtualized networks
AI/HPC & StorageLossless RoCE, deep buffers for compute-intensive workloads
Spine / Super-SpineHigh-capacity, non-blocking core for large leaf-spine architectures
Service Provider CoreCarrier-grade routing, redundancy, and virtualization
Enterprise CoreMission-critical backbone with advanced security and automation
Multi-Tenant Data CentresSecure isolation and optimized resource utilization

Software Specification

Network Virtualization

  • BGP-EVPN
  • EVPN VxLAN
  • Manual configured VxLAN
  • VSS (Virtual Switching System)
  • VxLAN centralized/distributed gateway
  • VxLAN IPv4 tunnel
  • VxLAN L2/L3 gateway
  • IPv4 VxLAN tunnel

IP Services

  • DHCP Relay/Server
  • DHCP Snooping
  • L2PT
  • MPLS OAM
  • P/PE function
  • L3 MPLS VPN
  • MCE (Multi-VRF CE)
  • VPLS
  • LDP protocol

Layer 2 Technologies

  • Dynamic/static/blackhole MAC entries
  • Port-based VLANs
  • PVST/PVST+/RPVST+
  • STP/RSTP/MSTP
  • VLAN mapping
  • MVRP (Multiple VLAN Registration Protocol)
  • L2PT

Reliability

  • BFD for BGP, IS-IS, OSPF, static routes
  • Clos+ midplane-free design
  • DLDP
  • RRPP and ERPS
  • Ethernet OAM
  • Hot swapping for all components
  • IP-FRR and TE-FRR (<50 ms)
  • LACP with stack split detection

High Availability

  • 1+1 redundancy for MPUs and power
  • BFD with failover <50ms
  • CLOS+ midplane-free architecture
  • Hot patching support
  • Hot-swappable components
  • Independent switching fabric modules
  • NSR/GR for OSPF, BGP, IS-IS, RSVP
  • Real-time data backup on active/standby MPUs

IPv4/IPv6 Routing

  • BGP (Border Gateway Protocol)
  • OSPF v1/v2/v3
  • RIP v1/v2, RIPng
  • IS-IS, IS-ISv6
  • Static routing
  • VRRP
  • PBR (Policy-Based Routing)
  • Routing policy

Quality of Service (QoS)

  • Accounting by packet and byte
  • CAR (Committed access rate)
  • COPP (Control Plane Policing)
  • Flexible queue scheduling (SP, WFQ, WDRR)
  • WRED and tail drop
  • Packet filtering L2-L4
  • Traffic shaping
  • Priority remarking
Technical Specifications

Hardware Specification

Comprehensive technical specifications for the WD25000 Data Center Cloud Core Series

Product Models Reference

WD25004X4 slotsWD25008X8 slotsWD25016X16 slots

Chassis Models

WD25004X
6U chassis4 LPU slots57.6 Tbps28,800 Mpps≤100 kg
WD25008X
12U chassis8 LPU slots115.2 Tbps57,600 Mpps≤190 kg
WD25016X
21U chassis16 LPU slots230.4 Tbps115,200 Mpps≤350 kg

Supervisor Engine (MPU)

Models
WDXM1SUP04B1/H1WDXM1SUP08B1/H1WDXM1SUP16B1/H1
SDRAM
16 GB or 32 GB
Flash
64 GB
Management Ports
2*10/100/1000 Base-T2*1G SFP
Console Port
1*RJ45
USB Port
1*USB

Switching Fabric

Slots
6 fabric module slots
Redundancy
N+1 redundancy
Classes
Class C, D, EC+: Enhanced throughputE: Highest performance
Capacity
Up to 9.6 Tbps per slotScalable bandwidth expansion

Line Cards (LPU)

Port Types
10G SFP+40G QSFP+100G QSFP28
High-Density Cards
48*10G48*40G48*100G
Mixed Cards
24*10G + 4*40G6*100G + 12*40G48*10G + 2*100G
Buffer per Card
Up to 24 GB4 GB per forwarding chip
Hardware Queues
Up to 96K queues per line card

Power & Cooling

Power Modules
2400W AC/DC3000W AC3000W AC+HVDC
Redundancy
N+M redundancy
Fan Modules
Standard coolingHigh-speed fan options
Airflow
Front-to-back design
Efficiency
Smart power managementSequential power on/off

Physical & Environmental

Dimensions (WxDxH)
264-931*440*857 mm6U-21U
Operating Temp
-5°C to 55°C
Storage Temp
-40°C to 85°C
Humidity
5% to 95% non-condensing
MTBF
High reliability design
EMC/Safety
FCC, CE, RoHSCISPR 22/24/32

Data Center Advantages

CLOS+ Architecture

Midplane-free design

EVPN-VXLAN

Cloud-scale fabric

RoCE Lossless

AI/HPC optimized

DC-Class HA

50ms failover

Ordering Information

ModelDescriptionUse CaseSwitching Capacity
WD25004XCompact 6U modular switch with 4 LPU slots, ideal for leaf, aggregation, and secure edge spineLeaf, RR, Aggregation, Secure Edge Spine, Border Leaf, PE Router57.6 Tbps
WD25008XMid-size 12U modular chassis with 8 LPU slots, designed for spine/super-spine deploymentsSpine/Super-Spine, AI/HPC, Storage Core, ISP Core115.2 Tbps
WD25016XHigh-capacity 21U data center core chassis with 16 LPU slots for maximum scalabilityLarge-scale core, high-density deployments, mega data centers230.4 Tbps

Industry Standards Compliance

IEEE Standards

  • IEEE 802.1s: MSTP
  • IEEE 802.1qaz: Data Center Bridging (DCB)
  • IEEE 802.1d: Spanning Tree Protocol
  • IEEE 802.1p: Traffic Class & QoS
  • IEEE 802.1q: VLAN Tagging
  • IEEE 802.1QBB: Priority Flow Control (PFC)
  • IEEE 802.1w: RSTP
  • IEEE 802.1ag: Connectivity Fault Management

IETF RFCs

  • RFC 1771: BGP-4
  • RFC 2328: OSPFv2
  • RFC 793: TCP Standard
  • RFC 1191: Path MTU Discovery
  • RFC 1305: NTPv3
  • RFC 1321: MD5 Message Digest
  • RFC 2328: OSPFv2
  • RFC 4271: BGP-4

EMC & Safety Standards

  • CISPR 22 Class A - EMC Emissions
  • CISPR 24 - EMC Immunity
  • CISPR 32 Class A - EMC Emission
  • EN 55022 Class A - IT Equipment Emission
  • EN 55032 Class A - Multimedia Emissions
  • FCC Part 15 Class A - Electromagnetic Emissions
  • ICES-003 Class A - Canada EMC
  • ROHS Compliance

Data Center Features

  • EVPN-VXLAN (RFC 8365, RFC 7348)
  • MP-BGP (RFC 4760, RFC 7432)
  • RDMA over Converged Ethernet (RoCE)
  • Priority-based Flow Control (PFC)
  • Enhanced Transmission Selection (ETS)
  • Data Center Bridging Capability Exchange (DCBX)
  • Explicit Congestion Notification (ECN)

Ideal for Modern Cloud Data Center Architectures

Designed for next-generation data centers, cloud infrastructures, AI/HPC workloads, and scalable spine/leaf deployments.

Cloud & Multi-Tenant DCs

Scalable EVPN-VXLAN fabric for secure, automated virtualized networks.

AI/HPC & Storage Clusters

Lossless RoCE, deep buffers, and low latency for compute-intensive workloads.

Spine / Super-Spine

High-capacity, non-blocking core for large leaf-spine architectures.

Service Provider Core

Carrier-grade routing, redundancy, and virtualization for mission-critical backbones.

Enterprise Core

Advanced security, automation, and high availability for enterprise data centers.

Data Center Interconnect

Multi-pod, multi-site, and multi-cloud extension with consistent policies.