The Nortel 1/10Gb Uplink Ethernet Switch Module serves as a switching and routing fabric for all models of BladeCenter server chassis. In addition to the Layer 2 switching capabilities, this switch supports the expanded capabilities of Layer 3 routing. The module can be hot-plugged into the BladeCenter chassis without disrupting normal operations.The switch connects to the server blades via the 14 internal GbE interfaces (server ports) over the BladeCenter mid-plane. It supplies nine external Ethernet interfaces for outside communication. This includes three 10GbE SFP+ ports and six 1Gb RJ45 ports. Each 10GbE SFP+ port requires an optional pluggable SFP+ transceiver.You can manage the 1/10Gb switch through two internal 100 Mbps ports for communication to the BladeCenter management module using any of the internal or external data ports through an external serial port.