The Cisco Nexus 2348UPQ fabric extender is a general-purpose unified port. The Cisco Nexus 2348UPQ supports 48 x 1- and 10-Gbps host unified ports as well as up to six 40-Gbps uplink ports to the parent switch. The 40-Gbps uplinks support BiDi optics for simple connectivity using your existing cable plan. The unified ports provide connectivity to 2-, 4-, 8-, and 16-Gbps Fibre Channel (24 ports for 16 Gbps) as well as 1 and 10 Gigabit Ethernet and FCoE connectivity options (currently, Fibre Channel functions are supported only in hardware). The Cisco Nexus 2348UPQ has a deep 32-MB shared buffer that helps increase performance, and it supports FCoE and Data Center Bridging (DCB) network technologies, which boost the reliability, efficiency, and scalability of Ethernet networks. These features provide support for multiple traffic classes over a lossless Ethernet fabric, enabling consolidation of LAN, SAN, and cluster environments.
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