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Nexus 5548UP Real Bandwidth

I was wondering if someone can explain to me the real bandwidth on a 5548UP? We always hear the 10G number, but doesn't this really mean the ASIC has 10G spread across the front-end ports it's attached to? So you really are not getting 10G on each port.



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The 5548UP is non-blocking.

The 5548UP is non-blocking. All 10 Gbps ports can run at wire speed simultaneously. Reference.

There is an internal Unified Port Controller (UPC) ASIC per each group of 8 ports but it does not introduce blocking. Later in the linked document it states:

"The UPC manages eight ports of 1 and 10 Gigabit Ethernet or eight ports of 1/2/4/8-Gbps Fibre Channel. It is responsible for all packet processing and forwarding on ingress and egress ports. Each port in the UPC has a dedicated data path. Each data path connects to UCF through a dedicated fabric interface at 12 Gbps. This 20 percent over-speed rate helps ensure line-rate throughput regardless of the internal packet headers imposed by the ASICs"