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Nano Interface Unit / Rugged Ethernet Switch - NIU

The NIU2A-ES2 is a small, rugged, low-power, self-contained Rugged Ethernet Switch system. It is 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 (GbE) Ethernet ports and four (4) optional 10 Gb 850 nm fiber-optic ports. Additionally, there is one GbE and one RS-232 port for maintenance / configuration interface. The NIU-ES2 supports Open Systems Interconnection (OSI) model data link (L2) and network (L3) layer, quality of service (QoS) and security features. Ideally suited for rugged Mil-Aero applications, the NIU2A delivers off-the-shelf solutions that accelerate deployment of SWaP-optimized systems in air, land and sea applications.

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: ~7.2" x 2.7" x 3.0" (including connectors), ~2.7 lbs (1.22 kg), 28 VDC input @ ~1.0 A Operating

ES2 Managed Ethernet Switch Specifications
Module ID:

ES2: Multiport Managed Ethernet Switch Module (up to 16 ports)

Number/Type of Channels:

16; 10/100/1000Base-T, Additionally:

  • 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)
  • IEEE 802.3ae (10GBase-SR, 10 Gbit/s Ethernet over Fiber for LAN)
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 9600-byte jumbo frames
  • 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., separate 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
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
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
  • IKE (v1, v2)
  • IPSec
  • Stateful firewall
  • Denial-of-Service (DoS) attack
Block Diagram

The NIU2A-ES2 includes SSKs to support multiple operating systems. In addition, SSKs are supplied with source code and board-specific library I/O APIs to facilitate system integration.

Accelerate Your Time-to-Mission™ With COSA®

NAI’s Configurable Open Systems Architecture™ (COSA®) offers a choice of over 100 smart I/O, communication, and Ethernet switch functions, providing the highest package density and greatest flexibility of any multifunction I/O board in the industry. Preexisting, fully-tested functions can be combined quickly and easily in an unlimited number of ways. Choose the ideal platform for your application below. Each I/O function has dedicated processing, unburdening the system Single Board Computer (SBC) from unnecessary data management overhead.

Related COSA® Products
Just How Configurable Are NAI's COTS Systems?

Need more or less configurations than the NIU2A-ES2? Choose from NAI's standard COTS configurable systems that you can populate with pre-integrated boards, smart function modules, power supplies and software libraries of your choice.

Model Dimensions w/ Connectors
(w x h x d)
Weight / lbs.
(Fully populated)
Function Module
Board Slots Board Formats
NIU1A 6.8" x 1.6" x 2.5" < 1.2 1 N/A Integrated System
NIU2A 7.2" x 2.7" x 3.0" < 2.7 2 N/A Integrated System
NIU3A 7.2" x 3.2" x 5.5" < 5.4 3 N/A Integrated System
NIU3E 7.2" x 3.2" x 7.1" < 7.7 1 N/A Integrated System
SIU31 4.7"x 2.4" x 8.8" < 5.9 3 1 cPCI
SIU32S 5.9" x 4.5" x 9.5" < 11.5 6 2 OpenVPX
SIU33 4.7" x 4.8" x 8.8" < 10.6 9 3 cPCI
SIU34 5.7" x 5.8" x 9.4" < 15.1 12 4 OpenVPX
SIU35 7.2" x 4.8" x 8.7" < 16.0 15 5 cPCI
SIU36 Conduction Cooled: 9.0" x 5.0" x 9.5"
Convetion/Air Cooled: 9.0" x 6.4" x 9.5"
Conduction Cooled: < 21.3
Convection/Air Cooled: < 22.5
18 6 OpenVPX
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