NETernity™ RM931

VME Layer 2/3/4 Managed Ethernet Switch with 12 or 24 1/0/100BaseTX ports & 1 or 2 1000BaseSX ports

NETernity™ RM931

This product reached the end of its lifecycle (end-of-life) on December 31, 2006

Please refer to downloads section below if you require documentation or software. If you have any questions or require product support, including help migrating to our latest products, please contact us.


RM931 is a Layer 2/3/4 VME managed switch designed to run in a VME chassis that provides only power. There is no need for a system controller. The RM931 has 12 or 24 ports of 10/100BaseTX Ethernet routed to the rear I/O and one or two fiber gigabit Ethernet ports routed to the front panel. The powerful management features of the RM931 can be accessed via Web Server, Telnet, SNMP or a local control console via RS232. In addition, an onboard PowerPC® processor, running the Linux® operating system, permits easy and open tools for adding customer and applications specific software. As standard, the RM931 routes all 24 ports of the10/100BaseTX to the rear I/O. Customers wishing to access these ports via the front panel should select the optional variant, the RM931/3-24FP. There is also an option for a single-slot board, with twelve 10/100BaseTX Ethernet ports, the RM931/3-12. Another optional feature of the RM931 is a Conformal Coated variant, designed for conformance to mission critical applications. For integration into even more demanding, high integrity applications, customers may select the RM931/M variant which is available with conduction cooling as standard.

  • VLAN support 802.1Q-ID tagging
  • Multicast and broadcasting
  • 802.1w Rapid Spanning Tree algorithm
  • 802.1d Spanning Tree algorithm
  • Full wire speed on all ports
  • RS232 serial port
  • MDIX for cross and non-cross cabling detection
  • Two 1000BaseSX fiber uplinks
  • Optional port routing to the front panel (dual slot)
  • 12 or 24 port 10/100BaseTX, rear I/O
  • Layer 2/3/4 switching
  • Intel 2412 switch fabric
  • QoS capable
  • SNMP management
  • Bandwidth management
  • Port setup
  • Port statistics
  • Port mirroring
  • Options include 12 or 24 ports front I/O, 12 or 24 port rear 10/100TX with 2 1000SX ports on front panel


Form Factor
Port Type
Management Type
Fully Managed Layer-2/3+



Can’t find what you’re looking for? Need help?

Head on over to our support pages, where you’ll find key contacts, how to obtain documentation, information on warranty and repairs, contract samples, details of our Product Lifecycle Management and Configuration Management programs – and much more.