Epsilon-24000 26-Port Gigabit Ethernet Switch

Managed 26-Port Gigabit Ethernet Switch with wide voltage input and serial management port
  • Details
  • Specification
  • Order information
  • 26-port, Layer 2+ switch with built-in microcontroller
  • 4Mb packet memory
  • Standalone network switch, or in combination with a host computer
  • Operating Temperature: -40°C to +85°C (-40°F to +185°F)
Epsilon-24000 is a managed Layer 2+ Ethernet switch module offering up to 24 10/100/1000Mbps copper twisted pair ports and 2 small form factor pluggable (SFP) sockets in the compact PC/104 form factor. Epsilon-24000 is designed for rugged applications including industrial, on-vehicle and military.

Epsilon-24000 is a standalone switch that does not require any host computer interface. All switch functions are managed by a microprocessor embedded directly into the switch. The processor is accessed via an in-band web interface over one of the Ethernet ports or via an out-of-band command-line interface over an RS-232 serial port. The integrated web interface provides an intuitive GUI for use in configuring and managing all switch functionality. On-board memory holds dual application images, boot code, MAC addresses, and other parameters, and can also be used for program execution.

Epsilon-24000 includes a dual SFP socket for interfacing to 1G fiber Ethernet networks. One port can operate at enhanced 2.5G speed to support efficient stacking of two switches together for a combined total of 50 ports.

Epsilon-24000’s advanced Ethernet switch board includes two innovative features that enable automatic power savings. The switch can detect unused Ethernet ports on network devices and power them down or place them in stand-by mode. Additionally, the switch actively adjusts the power level needed based on cable length, saving energy on links shorter than the 100m maximum specified length.

Input power is provided through the built-in, wide-range +5 to +34VDC power supply, enabling operation using industrial power sources.

Epsilon-24000 was designed for use in vehicle and harsh environment applications. All I/O connectors are latching, providing enhanced reliability over the RJ-45 connectors used in commercial Ethernet switches. A 50% thicker PCB provides better protection against vibration in vehicle environments. The wide range 5-34V input power supply is compatible with all common vehicle and industrial power sources. The −40?C to +85?C operating range makes Epsilon-24000 suitable for use in outdoor and vehicle applications.

Epsilon-24000 comes loaded with all required firmware, enabling its immediate operation without any development effort. The included web interface provides an intuitive GUI for use in configuring and managing switch functionality.

Block Diagram

Epsilon-24000 Block Diagram
Epsilon-24000 Block Diagram

Development Kit

Two Development Kits are available for the Epsilon-24000. The DK-EPS-24026 Development Kit contains an EPS-24026-104 26-port Gigabit Ethernet switch, cable kit and LED accessory board. The DK-EPS-24016 Development Kit contains an EPS-24016-104 16-port Gigabit Ethernet switch, cable kit and LED accessory board.

Cable Kit

Two Epsilon-24000 cable kits are available, one for each Epsilon-24000 model. Each kit includes the necessary cables for Epsilon-24000’s inputs and outputs.

Epsilon-24000 Cable Kit

Number Qty Cable Description
1 1 6981050 Serial cable
2 4 or 6, kit dependent 6981508 Quad port Ethernet cable
3 1 6981507 Power cable


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Technical specifications
Switch Type26-port, Layer 2+ switch
Built-in microcontroller for configuration and management
Number of Ports16 or 24 10/100/1000Mbps Ethernet ports with non-blocking wire-speed performance
1 1G SFP socket; 1 2.5G SFP socket
On-board Memory4Mb packet memory
Shared memory buffer with per-port & CoS memory management
MEFHierarchical MEF compliant policing & scheduling
MEF E-Lane, E-Line, and E-Tree services
Frame BufferJumbo frame support at all speeds
VLANIEEE 802.1Q VLAN switch with 8K MACs and 4K VLAN
Push/pop up to two VLAN tags
Independent & shared VLAN learning (IVL, SVL)
MulticastIPv4 and IPv6 multicast group support
RemarkingDual leaky bucket policers with remarking and statistics
Classifier8 priorities and 8 CoS queues per port with strict or deficit-weighted round robin scheduling
Shaping/policing per queue and per port
Storm ControlPolicing with storm control and MC/BC protection
Link AggregationIEEE 802.3ad
SecurityAdvanced security and prioritization available though multistage TCAM engine
RSTPRapid Spanning Tree Protocol (IEEE 802.1W) and MSTP
MIBsSupport for both WebStax and CEServices MIBs
Power ManagementActiPHY and PerfectReach power management
VeriPHY cable diagnostics
Serial Port1 RS-232 port for host interface
Indicator LEDs50 status LEDs:
2 per copper port, 1 per SFP port
Standalone CapableStandalone network switch, or in combination with a host computer
Power Input+5 to +34V DC/DC power supply
Power Consumption16 ports active: 10.4W maximum at +12VDC
26 ports active: 15.7W maximum at +12VDC
Form FactorPC/104 3.55" x 3.775" (90mm x 96mm)
Weight4.9oz (138.9g) with heatsink
Environmental and physical specifications
Operating Temperature-40°C to +85°C (-40°F to +185°F)
MTBF461,094 hours at 20°C main board
1,661,388 hours at 20°C daughter board
RoHSCompliant
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Model Description
 EPS-24026-104  26-Port Gigabit Ethernet Switch including 2 SFP ports, PC/104 form factor, -40°C to +85°C operating temperature
 EPS-24016-104  16-Port Gigabit Ethernet Switch, PC/104 form factor, -40°C to +85°C operating temperature
 DK-EPS-24026  EPS-24026-104 Development Kit: EPS-24026-104 switch, CK-EPS-24026, ACC-LED-EPS24000
 DK-EPS-24016  EPS-24016-104 Development Kit: EPS-24016-104 switch, CK-EPS-24016, ACC-LED-EPS24000
 CK-EPS-24026  Cable Kit for EPS-24026-104 with 6 quad port Ethernet cables, 1 serial cable, 1 power cable
 CK-EPS-24016  Cable Kit for EPS-24016-104 with 4 quad port Ethernet cables, 1 serial cable, 1 power cable
 ACC-LED-EPS24000  Epsilon-24000 LED Accessory Board
 6981505  Epsilon daisy-chain cable
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