Extreme Networks Summit 48si sets the new standard for Layer 3 switching at the edge by maximizing 10/100 port density, architecting unparalleled levels of reliability while maintaining leadership in Layer 3 software features & performance. The Summit 48sis unsurpassed software features, capacity, & performance enable customers to provide more Layer 3 services to more users while using less space & at a lower cost than ever before. At an incredible one rack unit (1.75") in height, the Summit 48si packs a whopping 48 10/100 Ethernet ports & 2 Gigabit Ethernet ports-with non-blocking capacity to support every port at full line rate. & the Summit 48si reliability is enhanced even further with dual Gigabit Ethernet uplinks, both of which are active & can be aggregated for enhanced throughput & increased redundancy. Extreme Networks advanced Layer 3 software feature set, Extreme Ware, combined with the new 1 rack unit, dual power supply form factor makes the Summit 48si an unbeatable solution at the edge of the network. Featuring the same Inferno ("i") series chipset that powers Extremes award-winning Alpine & Black Diamond modular switches, the Summit 48si supports the most comprehensive set of Layer 3 switched services in the industry-including OSPF, prioritization & bandwidth management Quality of Service, Access Control Lists, Denial of Service protection, & many more features. This unique combination of high performance, reliability & extensive Layer 3 switched services enables the Summit 48si to support redeployment of Layer 3 edge services right to the edge of the network-saving the customer money & improving overall network functionality & performance.