Ethernet Military Switch RJSMLAC-8MG-CAPS

Fully MIL-STD compliant

Key features
  • Managed military Ethernet switch with RJFTV connectors
  • 8 Gigabit ports
  • MIL-STD-461E, EMI
  • MIL-STD-810F/GM, Environment
  • MIL-STD-1275B, Power protection
  • MIL-STD-704A, Power protection
  • MIL-F-18870-E, Temperature shock test
  • MIL-STD-167-1A Low frequencies Vibrations
  • MIL-S-901D Lightweight shocks
  • Data acquisition & transmission
  • Battlefield communication c4IsR
  • Rugged networks
  • Combat vehicles
  • Avionic & shipboard system
Technical information

User manual :

Our Rugged Ethernet switches withstand extreme operating conditions of battlefield, marine and aerial environments


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User Manual RJSMLAC-8MG-CAPS Management CLI

Last update : Wed, 05/09/2018 - 17:46

User Manual RJSMLAC-8MG-CAPS Hardware

Last update : Wed, 05/09/2018 - 17:43

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Broadcast messages are sent to all stations in the network. 

Whereas an unicast message is only sent to one station on the network. 

Multicast messages are sent to a group of stations, for example video cameras type. Using multicast allows the building of distribution networks, which are suitable for video monitoring or television transmissions over the Internet, i.e. information with one sender and many receivers. 

IPv4 addresses as or are BROADCAST IP addresses. 
IPv4 addresses from to are MULTICAST IP addresses. 

Learn more about our Rugged Ethernet Switches by clicking HERE

Devices use flow control to ensure that the receiving device takes in all the data without error. If the transmitting device sends at a faster rate than the receiving device, then the receiving device will eventually have its buffer full. No further information can be taken when the buffer is full, so a flow control signal is sent to the transmitting device to temporarily stop the flow of incoming data. 
For each port, Flow Control can be enabled or disabled.

Switches can be cascaded almost without limit because unlike a passive hub that has retransmission limitations, an active switch regenerates Ethernet messages as if it were an original transmission. 

There really is no limit as long as the total latency is acceptable to your application. For example, the total latency of 10 Ring Switches cascaded (connected in series) is typically less than 50 us.

Be careful! 
Unmanaged switches cannot form a ring. In an unmanaged Ethernet network there can be only one path between any two ports on the network. If there is more than one path from one switch to another a broadcast message (and in some cases other messages) sent by the network will be forwarded until it completes a loop by returning on the second path. Since the switches forward all broadcasts and do not keep track of the messages they have sent, the returning message will be sent around the loop again and again. A single message circulating forever around a loop at high speed is clearly not a good thing, so no loops are allowed. 

Ring switches allow to form rings based on unique proprietary protocol. This protocol is based on MAC address. 

Managed switches allow you to form a ring through the RSTP feature. The Rapid Spanning Tree Protocol (RSTP) allows you to have an Ethernet network with extra connections, so if one path between two points on the network fails, another path can be used to deliver messages. If one link or switch fails, another link or switch can take over transparently to prevent unnecessary down time.

Basically, an unmanaged switch is a device that forwards packets within a LAN. It is a truly plug and play device which does not require any configuration. Just plug in it, connect the Ethernet cables from users such as personal computers or I/O devices, and it will immediately communicate data between users. 

The Ring switch has extended capabilities. It allow to connect devices in a Ring topology. When a link is broken, the Ring switch instantly transfers data to new path. This provide fast network and avoid fault on the network. 

A managed switch is a device that forwards packets between LANs. This device also has to capability to support loop configurations using Spanning Tree Protocol. Loop configurations are used to prevent a single point of hardware failure in a network. Management Information about the network is also obtained through the switch by querying the MIB can be configured to improve the network performance and control the traffic. They may be configured via a Telnet console or even a web browser. Different management features are available.


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