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Consider the following scenario, you set up a bridge and have enabled hardware offloading in order to maximize the throughput for your device, as a result, your device is working as a switch, but you want to use Sniffer or Torch tools for debugging purposes, or maybe you want to implement packet logging.
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By enabling |
Bridged VLAN
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A more simplified scenario of Bridged VLAN on physical interfaces, but in this case, you simply want to bridge two or more VLANs together that are created on different physical interfaces. This is a very common type of setup that deserves a separate article since misconfiguring this type of setup has caused multiple network failures. This type of setup is also used for VLAN translation.
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Problem
As soon as you start Bandwidth test or Traffic generator you notice that the throughput is much smaller than expected. For very powerful routers, which should be able to forward many Gigabits per second (Gbps) you notice that only a few Gigabits per second gets forwarded. The reason why this is happening is because of the testing method you are using, you should never test throughput on a router while using the same router for generating traffic because you are adding an additional load on the CPU that reduces the total throughput.
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