This Cisco ONS 15310 ML-Series 8-Port Switched Ethernet Card is a Layer 2-switched services card that interoperates with the Cisco ONS 15454 ML-Series data cards on the Cisco ONS 15454 SONET Multiservice Provisioning Platform (MSPP), delivering Ethernet and Fast Ethernet solutions that span access metropolitan-area networks. It uses statistical multiplexing, which supports oversubscription and better usage of Ethernet networks. Resilient packet ring (RPR) enables efficient multipoint services, with spatial reuse of bandwidth and sub-50-ms, Layer 2 ring-based protection. By using switched Ethernet and RPR, the result is a more robust, efficient solution that economically addresses the needs of today's advanced services requirements.