Collection:

Modular Automation Switches

Scalable Layer 1 switching for test lab connectivity and topology management

Modular Automation Switches are part of the Keysight (formerly Spirent) Velocity product family.

Model:

VLB13903A

N/A

Velocity 3903 Automation Switch

The Velocity 3903 is a 3-slot Layer 1 automation switch with up to 288 ports of 10 GbE, redundant power, and multi-protocol support.

Matrix Switch Layer-1, Non-blocking, OEO
Max number of 10 Gb ports 288

Automate Lab Connectivity Across Speeds and Media Types

Test labs that support multiple projects, teams, and interface speeds need a way to reconfigure physical connectivity without manual patching. Modular Automation Switches address this by combining Layer 1 optical-electrical-optical (OEO) matrix switching with a pay-as-you-grow chassis architecture. Three chassis options — 1, 3, and 12 slots — scale from 96 to 1,152 ports of 10 GbE, supporting Ethernet and six additional protocols through interchangeable blade modules. Controlled by Velocity Core or third-party automation systems, the switches integrate into existing lab workflows to enable remote, secure access to test beds from anywhere.

Scalable Chassis Architecture

Choose a 1-, 3-, or 12-slot chassis and add blades as port requirements grow — no forklift upgrades required.

Multi-Protocol Flexibility

Switch Ethernet, CPRI, SAS, Fibre Channel, OTN, SONET, and OC traffic through a single non-blocking fabric.

Remote Topology Management

Set up, execute, and tear down test scenarios from any location through Velocity Core or third-party automation software.

Redundant by Design

The 3903 and 3912 chassis deliver fully redundant power and control for high-availability lab environments.

Matrix Switch Layer-1, Non-blocking, OEO, xSL expansion
Max number of 10 Gb ports 96 to 1152

The Velocity 3903 is a 3-slot Layer 1 automation switch with up to 288 ports of 10 GbE, redundant power, and multi-protocol support.

Velocity 3903 Automation Switch

The Velocity 3903 is a 3-slot Layer 1 automation switch with up to 288 ports of 10 GbE, redundant power, and multi-protocol support.

Matrix Switch Layer-1, Non-blocking, OEO
Max number of 10 Gb ports 288

Highlights

The 3903 Automation Switch delivers Layer 1 optical-electrical-optical (OEO) matrix switching for test lab automation in a 3-slot, 19-inch rack mount chassis with fully redundant power and control.

  • Up to 288 ports of 10 GbE or 72 ports of 40 GbE
  • Up to 216 ports of 1 GbE
  • 3-slot chassis in a 3 rack unit (RU) form factor
  • Patented, non-blocking switching architecture
  • Fully redundant power and control for high availability
  • Supports S-Blade Pro (24 Quad Small Form-factor Pluggable Plus [QSFP+] ports) and S-Blade 64 (32 Small Form-factor Pluggable Plus [SFP+] / 8 QSFP+ ports)
  • S-Blade 64 delivers ultra low-latency Layer 1 connectivity (<5 ns)
  • Software-adjustable any-rate blades for flexible media and speed support
  • Supports Ethernet, Common Public Radio Interface (CPRI), Serial Attached SCSI (SAS), Optical Carrier (OC), Fibre Channel (FC), Optical Transport Network (OTN), and SONET
  • Integrates with Velocity Core for centralized topology management and remote access

Service and Support

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Financial Alternatives

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Keysight Support Portal

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Calibration

Ensure your test system performs to specification and meets local and global standards.

Education

Make measurements quickly with in-house, instructor-led training, and eLearning.

Software Download Center

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