EM2003 module series : The Layer 2 EM2003 module series has a communication on-board switching engine and supports wire speed non-blocking connections.
EM2004 module QoS series : The OptiSwitch EM2004 module series features MRV unique Ethernet Circuit Switching technology. These modules are available in a variety of interface types and densities and provide Layer 2-3-4 switching capabilities with QoS techniques . The on-board switching engines are capable of recognizing a series of frames as belonging to a specific flow (“Ethernet Circuit”), and apply policy based traffic classification and prioritization based on: • DiffServ - ToS • 802.1p queue mapping • Per VLAN membership • Per ingress PORT • Layer 2-3-4 traffic flows: MAC, IP, TCP/UDP source and/or destination • Per protocol
Each port has 4 hardware queues with two discardability options that implement QoS algorithms WRR, Hybrid , SP. High-flexibility bandwidth management with EM2004 QoS modules allows rate limiting from 64 Kbps up to 1Gbps on each flow (“Ethernet Circuit”) with 1 Kbps granularity. Rate limiting allows multiple bandwidth provisioning policies to be applied and to provide maximum flexibility for network designers to build intelligent network.