Doing capacity planning for all the workloads and identifying candidates to be virtualized help reduce the number of compute nodes in the data center. This is addressed today using Layer 2 multipathing technologies such as FabricPath and virtual Port Channels (vPC).Ĭomputing resources must be optimized, which happens by building a computing fabric and dealing with CPU and memory as resources that are utilized when needed. Modern data center designs need the following properties:Įffective use of available bandwidth in designs where multiple links exist between the source and destination and one path is active and the other is blocked by spanning tree, or the design is limiting you to use Active/Standby NIC teaming. Cisco Nexus Product line offers high-density 10G, 40G, and 100G ports as well. Using the Cisco Nexus products, you can build end-to-end data center designs based on three-tier architecture or based on spine-leaf architecture. The objective of the Unified Fabric is to build highly available, highly secure network fabrics.
The Cisco Nexus product family is a key component of the Cisco unified data center architecture, which is the Unified Fabric. With these characteristics, spine-leaf has become the de facto architecture of network engineers and architects for their next wave of data center architectures. Spine-leaf also uses routing with equal-cost multipathing to allow for all links to be active with higher availability during link failures. Just to name a few benefits, a spine-leaf design scales horizontally through the addition of spine switches which add availability and bandwidth, which a spanning tree network cannot do.
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