NETernity™ CP940

NETernity 6U CompactPCI 8-port embedded Layer 2 unmanaged 10/100BaseTX Ethernet switch with rear I/O

NETernity™ CP940

This product reached the end of its lifecycle (end-of-life) on January 30, 2010

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.


NETernity™ CP940 is a fully integrated CompactPCI 8-port 10/100BaseTX Ethernet switch designed to support the low-cost requirements of unmanaged switch applications and converging networks. The QoS technology allows low cost unmanaged switches to carry voice and data traffic without having to compromise the quality of its voice traffic by using the packet prioritization scheme. Packets are prioritized based upon their Layer 2 VLAN priority tag or the Layer 3 Type-Of-Service/ Differentiated Services (TOS/DS) field. This priority can be defined as transmit and/or drop priority. Customers can change the factory default port setting. The CP940 has a parallel port which can connect to a PC parallel port. The tool provided runs under Window 98 and the setting is stored on non-volatile memory. The setting can take effect immediately or on next power up. The card offers hot insertion capability for higher reliability, and rapid servicing.


  • Up to 8 port-based VLANs
  • Allows explicit identification of IP Phone ports
  • Input ports are defined to be high or low priority
  • Provides port-based prioritization of packets on 4 ports
  • Enables mixed voice-data networks
  • Auto address learning
  • Auto address aging Leading edge QoS capabilities, based on 802.1p, and IP TOS/DS field
  • 1K MAC address table
  • Full wire speed Layer 2 switching on all ports
  • Auto negotiation on all ports
  • Full duplex operation in both 10/100 modes
  • 8 ports 10/100BaseTX, rear I/O
  • Layer 2 unmanaged switch
  • Provides both Full/Half duplex ports
  • Flow Control capabilities
  • Back pressure for half-duplex
  • 802.3x flow control for full-duplex
  • CompactPCI Hot Swap
  • Not recommended for new designs -- for new designs see NETernity CP980RC
  • Ethernet/LAN Resource Center


Form Factor
Port Type
Management Type
Unmanaged Layer-2



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