3Com 8800 (3C17508) Expansion Module

The Switch Fabric performs route calculation and provides all Layer 3 switching functionality. It also performs Layer 2 switching between interface modules and where on-board Layer 2 switching is not possible. Based on the address-forwarding table, the hardware performs line-speed switching of Layer 2/Layer 3 data packets. VLANs, link aggregation, QoS traffic classification and prioritization and ACLs (Access Control Lists) are also supported by the hardware. It provides higher bandwidth and added reliability through link aggregation to create virtual connections.