Part Number	ET4000 Datasheet
Manufacturer	Agere
Overview	ET4000 Single-Chip 28 x 1 Gbits/s Layer 2+ Ethernet Switch Overview The 28-port ET4000 is part of the Agere Systems ET4K family of gigabit Ethernet switch chip sets. These cost-effective, true switc. such as L2/L3/L4 ACL as well as QoS capabilities. It offers advanced service recognition and queuing to support the ability to create and manage new QoSbased services. These comprehensive QoS features and the ET4000 wire speed performance enables enterprise desktop aggregation switching applications.