Overview The HP 5120 EI Switch Series are Gigabit Ethernet switches that support static Layer 3 routing, diversified services, & IPv 6 forwarding, as well as provide up to four 10-Gigabit Ethernet (10 Gb E) extended interfaces. Unique Intelligent Resilient Framework (IRF) technology creates a virtual fabric by managing several switches as one logical device, which increases network resilience, performance, & availability while reducing operational complexity. These switches provide Gigabit Ethernet access & can be used at the edge of a network or to connect server clusters in data centers. High scalability provides investment protection with two expansion slots, each of which can support two-port 10 Gb E expansion modules. High availability, simplified management, & comprehensive security control policies are among the key features that distinguish this series. Features Quality of Service (Qo S) • Broadcast control: allows limitation of broadcast traffic rate to cut down on unwanted network broadcast traffic Management • Friendly port names: allow assignment of descriptive names to ports Connectivity • Auto-MDIX: automatically adjusts for straight-through or crossover cables on all 10/100/1000 ports Performance • Nonblocking architecture: up to 192 Gbps nonblocking switching fabric provides wire-speed switching with up to 143 million pps throughput Resiliency & high availability • Separate data & control paths: keeps control separated from services & keeps service processing isolated; increases security & performance Layer 2 switching • 16K MAC address table: provides access to many Layer 2 devices Layer 3 services • Address Resolution Protocol (ARP): determines the MAC address of another IP host in the same subnet; supports static ARPs; gratuitous ARP allows detection of duplicate IP addresses; proxy ARP allows normal ARP operation between subnets or when subnets are separated by a Layer 2 network