Calculate the bandwidth of a Cisco switch Backboard

Calculate the bandwidth of the backboard of a Cisco switch. It is the maximum amount of data that can be transferred between the vswitch interface processor, interface card, and data bus. The higher the bandwidth of the backboard of A vswitch, the stronger the ability to process data, but the design cost will also rise. Www.2cto.com but how can we check whether the bandwidth of A vswitch is sufficient? Obviously, the estimation method is useless. I think we should consider two aspects: 1. The sum of the number of ports X on any port capacity should be twice that of the backboard bandwidth, it can realize full-duplex non-blocking switching, and it is confirmed that the switch has the conditions to maximize the data exchange performance. 2. Full configuration throughput (Mpps) = number of fully configured GE ports × 1. mpps the theoretical throughput of One gigabit port when the packet length is 64 bytes is 1.488Mpps. for example, a switch that can provide up to 64 Gigabit Ports, the full configuration throughput should reach 64 × 1.488 Mpps = 95.2 Mpps to ensure non-blocking packet switching when any port is working at the same speed. Assume that a vswitch can provide a maximum of 176 Gigabit ports and the declared throughput is less than 261.8 Mpps (176x1.488 Mpps = 261.8 ), the user has reason to think that the switch adopts a blocking structure design. Www.2cto.com is generally a qualified switch that meets both requirements. A vswitch with a relatively large backplane and a relatively small throughput retains the ability to upgrade and expand it to software. The design of a dedicated chip circuit is problematic. A vswitch with a relatively small backplane and a relatively high throughput, the overall performance is relatively high. However, the back-board bandwidth can be believed by the manufacturers, but the throughput can not be believed by the manufacturers, because the latter is a design value, the test is very difficult, and the significance is not great. The back-end speed of a vswitch is generally Mbps, which refers to the second layer. Mpps is used for switching between three or more layers.