Looking for a Spirent Alternative?

Pluribus VirtualWire - Virtualized patch panel for Layer 1 cross-connect

Manage Lab Connectivity and Troubleshooting Virtually

Are you seeking an alternative for Spirent for network testing? If so, consider VirtualWire from Pluribus Networks.

Pluribus VirtualWire is a virtualized patch panel for Layer 1 cross-connect that enables you to quickly build new network topologies in software in a matter of minutes with visibility and troubleshooting built-in, all at a fraction of the cost of traditional Layer 1 matrix switches.


Pluribus VirtualWire switch converts media and physical topologies into virtual ones.


Pluribus Virtual Wire switch converts media and physical topologies into virtual ones.The Pluribus VirtualWire switch is a highly flexible, highly-scalable physical layer non-blocking switching matrix powered by the Pluribus Netvisor® OS. It is designed to build dynamic, high-performance lab connectivity with packet/application/link layer visibility.

VirtualWire enables an engineer to conserve time, maximize productivity, reduce costs and eliminate errors associated with manual patching. VirtualWire also allows users to store well-known physical configurations and reproduce the configurations at will for subsequent testing. VirtualWire also offers a powerful RESTful API to integrate with a customer’s own management and orchestration tools.


  • After initial wiring, Pluribus Virtual Wire acts as a virtual patch panel
  • Scalability – add switches in the Virtual Wire fabric as needed
  • Efficient sharing of expensive test tools (e.g. traffic generators), which can be dynamically moved across test environments with a software command.
  • Save cable configuration for future re-use
  • Fabric-wide flow, packet, link-layer visibility to accelerate troubleshooting of physical layer issues as well as applications
  • Significant CapEx savings versus traditional Layer 1 switches: 1/10th the cost!
  • Highly programmable – CLI, Python, RESTful API and C-based APIs facilitate rapid development
  • Media conversion copper<>fiber


  • Virtual Wire 1:1 and 1:n port association
  • Transparency to Ethernet frame and L2 protocols (CRC, Error frame, LLDP, FEX, Instant Access etc)
  • Media/Speed conversion with low latency
  • Link status tracking across Virtual Wire fabric
  • Fabric management can be done via single switch via CLI and/or API
  • Time Machine to replay TCP flows
  • Hardware-based packet filtering, packet capture in PCAP format and packet analysis with VCFcenter
  • sFlow, IPFIX support