Cisco Cisco Nexus 5010 Switch Libro bianco

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Figure 2.   
I/O Interface and Cabling Before Implementing ToR Cisco Nexus 5000 Series Switch Unified Fabric 
 
To address the fabric infrastructure challenges, UITS deployed two Cisco Nexus 5000 Series Switches at the top of 
each rack and ran cables through ceiling cable trays rather than under the raised floor to an improved core built 
around Cisco Nexus 7000 Series Switches and the Cisco
®
 MDS 9000 Series Multilayer Switches. UITS uses one 
QLogic 8042 or 8152 dual-attached converged network adapter (CNA) per server and the built-in Gigabit Ethernet 
adapter for server management. CNAs present both a physical Ethernet NIC and Fibre Channel HBA to the server’s 
PCI Express (PCIe) bus, passing both traffic streams onto a single unified network fabric - all transparent to the 
operating system. 
Today, instead of 8 to 10 cables per server below the floor going to a central switch, there are 2 prewired cables per 
server going to the ToR Cisco Nexus 5000 Series Switches, which are connected through fiber aggregation panels to 
the core through two six-strand fibers in ceiling trays, as shown in Figure 3. With the 10 Gigabit Ethernet 
infrastructure, UITS uses fewer cables and has more bandwidth and better performance to support applications than 
with the previous solution. In addition, cable and overall network management has been radically simplified. 
Figure 3.   
I/O Interface and Cabling After Implementation of Cisco Nexus 5000 Series Unified Fabric 
 
 
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