Nano Interface Unit / Rugged Ethernet Switch - NIU

Nano Interface Unit / Rugged Ethernet Switch - NIU2A-ES2

Model NIU2A-ES2

Nano Interface Unit / Rugged Ethernet Switch - NIU

The NIU2A-ES2 is a small, low-power, self-contained Rugged Ethernet Switch system that is ideally suited for military, commercial aerospace and industrial applications requiring a SWaP-optimized solution.

Powered by an integrated MIL-STD-704A (designed to meet) power supply, it is a Layer 3, fully managed switch providing sixteen (16) 10/100/1000Base-T Gigabit Ethernet ports and four (4) optional 10 Gigabit 850 nm multimode fiber-optic ports. Additionally, there is one GbE and one RS-232 port for maintenance / configuration interface.

The NIU2A-ES2 supports Open Systems Interconnection (OSI) model data link (L2) and network (L3) layer, quality of service (QoS) and security features. The NIU2A-ES2 rugged switch provides scalable Ethernet links enabling networks including on-board vehicle, marine and aircraft platforms to field and expand digital network architectures for network-centric operations. The NIU2A-ES2 fits seamlessly in NAI’s Configurable Open Systems Architecture™ (COSA®) providing the most modular, agile and rugged COTS portfolio of embedded smart modules, I/O boards, Single Board Computers, Power Supplies and Ruggedized Systems.


  • Supports ES2 Managed Switch Module
    • 16x 10/100/1000Base-T (Gigabit Ethernet) ports
    • 4x Fiber Optic (10 Gb @ 850 nm) option
    • 1x Gigabit Ethernet and 1x RS-232 for maintenance
  • Minimized SWaP footprint
    • ~7.0" x 3.0" x 2.5" (including connectors)
    • ~2.75 lbs (1.25 kg)
    • 28 VDC input @ ~1.0 A Operating
  • High-Performance Ethernet Switch
    • Full auto-negotiation and auto-MDIX
    • IEEE 802.3ab (1000Base-T Gig-E)
    • IEEE 802.3u (100Base-TX Fast Ethernet)
    • IEEE 802.3i (10Base-T Ethernet)
    • IEEE 802.3x (Flow control/full and half-duplex)
  • L2 / L3 Management
    • Transparent bridging
    • VLAN aware bridging
    • Rapid Spanning Tree Protocol
    • Multiple Spanning Tree Protocol
  • Cybersecurity
    • Internet Protocol Security (IPSec)
    • Internet Key Exchange (IKE (v1, v2))
    • Stateful Firewall
    • Denial-of-Service (DoS) attack defense
  • Quality of Service (QoS) and Security Features
  • Continuous Background BIT (Pending)
  • VICTORY Interface Services (Contact Factory)
  • Rugged applications*
    • MIL-STD-810G
    • MIL-STD-461F
    • MIL-STD-704A (Designed to meet)
    • Operating temp: -40° to +71° C
    • Conduction-cooled and Convection/Air-cooled options (Contact Factory)

*Designed to meet. Characterizations pending. EMI/EMC requires shielded cables and proper grounding practices. Specifications subject to change without notice.

Number/Type of Channels

Up to 16; 10/100/1000 Base-T


  • 1x 10/100/1000Base-T maintenance port interface
  • 1x RS-232 maintenance/console port interface
  • Fiber-Optic Channel, 4x 10 Gb
Compatibility Standards

Broadcom® BCM53454x

  • IEEE 802.3ab (1000Base-T Gig-E)
  • IEEE 802.3u (100Base-TX Fast Ethernet)
  • IEEE 802.3i (10Base-T Ethernet)
  • IEEE 802.3x (Flow control/full and half duplex)
Quality of Service (QoS)
  • ACLs (Access Control Lists) for traffic filtering, Redirect Filter Support in ACL, Out Filter Support in ACL
  • 802.1p, DiffServ, traffic prioritization queuing, policing, shaping
  • Rate limiting and storm control
  • Flow control
  • IKE (v1, v2)
  • IPSec
  • Stateful firewall
  • Denial-of-service (DoS) attack
L3 Features*
  • IPv4 unicast - static routing, RIP v1/v2, OSPFv2
  • IPv4 multicast – IGMP (v1/v2/v3) router, PIM-SSM
  • IPv4 – NAT (Network Address Translation) – unicast
  • IPv6 unicast - static routing, Neighbor Discovery, RIPv6, OSPFv3IPv6 multicast – MLD (v1/v2), PIM-SSM
  • Route redistribution between IPv4 routing protocols and static routes
  • Route maps for filtering route advertisements and route redistribution – IPv4 and IPv6
  • Authentication support for OSPFv3
  • Support for multiple IPv4 addresses per interface - OSPFv2
L2 Features / Standard Management
  • Transparent bridging
  • VLAN aware bridging
  • Rapid Spanning Tree Protocol
  • Multiple Spanning Tree Protocol
  • IGMP; snooping – MAC based, filtering, Proxy reporting with snooping
  • MLD snooping (MAC based only supported
  • Link Aggregation with LACP
  • 802.1x authentication (Port based)
  • Link Layer Discovery Protocol - LLDP (v1, v2)), LLDP MED
  • Ethernet OAM - 802.3ah
  • Q-in-Q VLAN tunneling and Provider bridging
  • Non-blocking, Gig-E fully integrated switch fabric with packet buffer memory
  • Integrated MACs (IEEE 802.x compliant) with support for unicast MAC address entries
  • High-performance, look-up engine with support for unicast MAC address entries
  • Automatic learning and aging tags
  • IPv4 and IPv6 traffic class support (including ARP, ICMP, ND, UDP)
  • Port segregating / partitioning options available (e.g., seperate 8/8 ports for 2x independent networks) management
  • SNMP (v1, v2c, v3) agent and MIB support; configuration save / restore, CLI (Console, Telnet, SSH), pre-defined CLI commands
  • WebUI (HTTP and HTTPS / SSL), pre-defined web pages (As is basis), clear configuration (As is basis)
  • Syslog - client (with reliable syslog delivery) and relay, email alerts with authentication support
  • TCP/IP stack for IPv4 and IPv6 (including ARP, ICMP, ND, UDP)
  • DHCP (client, server, relay) for IPv4
  • Stateless DHCP service (Client) for IPv6 for specific options assignment
  • DHCPv6 relay with prefix delegation
  • RADIUS client, DNS client, TACACS+ client, SSH client, Telnet client (all clients with IPv4 and IPv6 support)
  • RMONv1
  • IP authorized managers
  • Ethernet port control and management
  • Port mirroring

Document DownloadsDate
NIU2A-ES2 Data Sheet
NIU2A Outline and Installation Drawing
Ethernet Switch