Features

• Eight Gigabit Ports with GMII and PCS interface

- Gigabit Port can also support 100/10 Mbps MII interface

• High Performance Layer 2 Packet Forwarding

(23.808M packets per second) and Filtering at Full-Wire Speed

• Maximum throughput is 8 Gbps non-blocking

• Centralized shared-memory architecture

• Consists of two Memory Domains at 133 MHz

- Frame Buffer Domain: Two banks of ZBT-SRAM with 2M/4MB total

- Switch Database Domain with 256K/512K SRAM

• Up to 64K MAC addresses to provide large node aggregation in wiring closet switches

Traffic Classification

• Classify traffic into 8 transmission priorities per port

• Supports Delay bounded, Strict Priority and WFQ

• Provides 2 level dropping precedence with WRED mechanism

- User controlled thresholds for WRED

• Classification based on layer 2, 3 markings

- VLAN Priority field in VLAN tagged frame

- DS/TOS field in IP packet

• The precedence of above two classifications can be programmable