EMBEDDED SYSTEMS

摘要

Targeting embedded-system applications, the ComEth4070a family of 6U VME L3 Gigabit Ethernet switches uses a Gigabit-switch engine and a PHY (physical)-layer transceiver. The switches combine a Layer 2+ switch and a Layer 3 router on a single board. The device supports full-wire speed L2 bridging and IP (Internet Protocol) routing with L2-L4 Access List for classification, filtering, and prioritization. Combining queue-priority-eight levels with QOS (quality-of-service) polecat allow tuning of jitter in critical applications. The device also provides 24 Gigabit Ethernet ports with 37 millions-packet/sec switching capacity. Devices in the Com-Eth4070a family cost $5200 each.