CP3923 Up to 16-Port Layer2/Layer3 3U CompactPCI Switch The CP3923 is a fully managed layer 2/3 Gigabit Ethernet switch offering IPv4/IPv6 routing and full management capabilities. It supports a powerful set of CLI, Telnet, Web and SNMP management interfaces to configure the entire set of protocols and parameters including Layer 2 and Layer 3 (IPv4/IPv6*) protocols, Multicasting, QoS and Security.