The BCM5645, with a forwarding rate of 8.9 Mpps, defines the next generation of performance for 48-port Fast Ethernet switching solutions. Through its advanced ContentAware™ feature set, the StrataSwitch IITM product family supports advanced applications and services, at wire speed, with non-blocking performance.
The BCM5645 uses 60 million transistors and 1 MB of internal memory to integrate the functionality of large 48-port board designs into two chips. This level of integration allows the BCM5645-based switch to sustain line rate on all 48 Fast Ethernet and 2-Gigabit Ethernet ports for Layer 2, and Layer 3 switching and all L2-L7 processing applications.

FEATURES
• 24 10/100 Mb and 2 10/100/1000 Mb Ethernet ports
• High-speed 2.5-Gbps TurboGigTM stacking link
• 8.9 Mpps (line rate) switching
• Default route table with 16 entries
• Integrated 255 entry IP multicast table
• IP multicast support (IGMP snooping capable)
• Integrated (8k) L2 table with auto learning
• Integrated (2k) L3 table
• Integrated (256 KB) data packet memory
• 64- or 128-bit-wide SDRAM support
• Spanning Tree support per VLAN
• DiffServ compliant
• Stacking architecture compatible with StrataSwitch ITM
• IEEE 802.1Q.D support
• Fast Filter Processor (FFP)
   - Examines up to the 80th byte of a packet
   - Supports TOS and DiffServ field modification
   - Bandwith regulation and monitoring per network flow
   - Network data flow tracking granular to 1 Mbps