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Ethernet Switches & Routers

New Contributor
Posts: 3
Registered: ‎09-27-2012

Switch fabric capacity / Data forwarding capacity

Switch fabric capacity   1.92 tbps
Data forwarding capacity 1.6 tbps


this is MLXe-4 specification


what is means that Switch fabric capacity and Data forwarding capacity?

And how calculate that number?

Former Brocadian
Posts: 238
Registered: ‎06-30-2010

Re: Switch fabric capacity / Data forwarding capacity



Switch fabric capacity: The maximum rate the hardware can move information between cards/ports. This does not account for look-ups frames and packets.


Forwarding rate: The maximum rate the system can actually perform forwarding for frames/packets, including delays with store-and-forward, MAC/route table look-up, etc.


The switch fabric capacity will be calculated from ASIC / hardware specs, whereas forwarding capacity is usually derived from testing.


Hope this helps




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