NETernity™ RM939

6U VME dual slot 28-port Layer 2/3/4 managed Ethernet switch

This product reached the end of its lifecycle (end-of-life) on June 30, 2007

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RM939 is a dual slot 6U VME 28-port switch designed to support managed Ethernet routing switches. Its highly scalable and flexible architecture provides a broad range of high performance Ethernet workgroup switches that include VLAN, QoS, SNMP, Spanning tree, etc. The RM937 can run in a VME chassis that only provides power. This switch offers four 1000BaseSX or 1000BaseLX Gigabit Ethernet ports, 18 ports 100BaseFX and six ports 10/100BaseTX.

  • Layer 2/3/4 managed switch
  • 6U VME dual slot form factor
  • Four Gigabit Ethernet ports either 1000BaseSX or 1000BaseLX fiber or 10/100/1000BaseT copper
  • Six 10/100BaseTX rear I/O routed to P2 connector
  • Eighteen 100BaseFX front access ports
  • Advanced traffic prioritization, QoS, Diffserv, WRED, and bandwidth management capabilities
  • Advanced multicast, broadcast, and filtering capabilities
  • Support for multiple IP networks on a single port as well as multiple ports on the same network
  • Support for MPLS label edge router and label switch router configurations: Runs Linux OS
  • MDIX feature to allow detection of cross and non-cross cables
  • Link aggregation of all ports in groups of up to 8 for 10/100Mb/s and 2 for Gigabit ports
  • Full wire speed on all ports


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



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