The HP 5120 EI Switch Series delivers flexibility, scalability & low TCO with a robust feature set supporting stacking, static layer 3 routing, Po E+, ACLs & IPv 6. HP 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. The HP 5120 EI Switch Series can be managed with the HP Intelligent Management Center (IMC) for a single view of your network. Scalable & Secure Access Layer Switches The HP 5120 EI Switch Series supports stacking, static layer 3 routing, Po E+, ACLs & IPv 6. HP Intelligent Resilient Framework (IRF) technology creates a virtual fabric which increases network resilience, performance, & availability while reducing operational complexity. HP 4 chassis IRF for simpler, flatter, more agile networks & flexible deployment with longer-distance stacking between closets up to 70 km distance. Modular 10 Gb E uplinks (CX4, SFP+ & 10GBASE-T), stacking & power supplies allow for future upgradability. External redundant power supply for increased reliability. Limited Lifetime Warranty 2.0 with 3 years 24x 7 phone support & no software licensing required. Powerful Quality of Service (Qo S) The HP 5120 EI Switch Series supports advanced classifier-based Qo S which classifies traffic using multiple match criteria based on Layer 2, 3, & 4 information; applies Qo S policies such as setting priority level & rate limit to selected traffic on a port, VLAN, or whole switch. Traffic prioritization with supported congestion actions include: strict priority (SP) queuing, weighted round robin (WRR), & SP+WRR & traffic policing with Committed Access Rate (CAR) & line rate. Comprehensive Security Control The HP 5120 EI Switch Series supports flexible authentication methods including 802.1X, MAC, & Web Authentication for greater security & policy-driven application authentication. Access control lists (ACLs) provide IP Layer 2 to Layer 4 traffic filtering; supports global ACL, VLAN ACL, port ACL, & IPv 6 ACL. Source-port filtering, RADIUS/TACACS+, SSL, Port Security, & MAC address lockout deliver enhanced security. Single View of the Network The HP 5120 EI Switch Series can be seamlessly managed with HP Intelligent Management Center (IMC) to provide end-to-end network transparency with consistent network experience through comprehensive configuration, compliance & policy management. RMON & s Flow provide advanced monitoring & reporting capabilities for statistics, history, alarms & events. Resiliency & high availability Separate data & control paths: separates control from services & keeps service processing isolated; increases security & performance External redundant power supply: provides high reliability Smart link: allows 50 ms failover between links Spanning Tree/MSTP, RSTP: provides redundant links while preventing network loops Rapid Ring Protection Protocol (RRPP): connects multiple switches in a high-performance ring using standard Ethernet technology; traffic can be rerouted around the ring in less than 50 ms, reducing the impact on traffic & applications Layer 2 switching 16K MAC address table: provides access to many Layer 2 devices VLAN support & tagging: supports IEEE 802.1Q with 4, 094 simultaneous VLAN IDs GARP VLAN Registration Protocol: allows automatic learning & dynamic assignment of VLANs IEEE 802.1ad Qin Q & selective Qin Q: increase the scalability of an Ethernet network by providing a hierarchical structure; connect multiple LANs on a high-speed campus or metro network 10 Gb E port aggregation: allows grouping of ports to increase overall data throughput to a remote device 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 Dynamic Host Configuration Protocol (DHCP): simplifies the management of large IP networks; supports client; DHCP Relay enables DHCP operation across subnets Loopback interface address: defines an address that can always be reachable, improving diagnostic capability User Datagram Protocol (UDP) helper function: allows UDP broadcasts to be directed across router interfaces to specific IP unicast or subnet broadcast addresses & prevents server spoofing for UDP services such as DHCP Route maps: provide more control during route redistribution; allow filtering & altering of route metrics