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How to verify the Spirent Testcenter frame size?


Background: If sending layer2 frames with increment frame size, how to verify the received frames integrity? For example, check if the received frame size equals to sending frame size.

Of course you can use Spirent Signature to check the frame's integrity. Here is another way to check: Adding a custom header and insert a modifier. The modifier's value equals to minimum frame size, the modifier's step equal to frame size's step.

For example: Layer 2 frame size's step is 2, the Min value is 64, Max value is 1518.  You can set the modifier's step is 2 also, the value is 0x40, count is 728. Thus you can know the original frame size via this value of custom's head.

Product : Spirent TestCenter