如何发送带有损坏 FCS 的以太网帧?

2022-01-14 00:00:00 python networking automated-tests ethernet

问题描述

我不确定这是否可能，因为这可能在硬件中处理，但我需要发送一些带有错误的以太网帧.我希望能够创建 runts、jabber、misalignment 和 bad FCS 错误.我正在使用 Python.

I'm not sure if this is even possible since this might be handled in hardware, but I need to send some Ethernet frames with errors in them. I'd like to be able to create runts, jabber, misalignment, and bad FCS errors. I'm working in Python.

解决方案

它可以在硬件中处理，但并非总是如此——即使是，您也可以将其关闭；请参阅 ethtool 卸载参数.

It can be handled in hardware, but isn't always -- and even if it is, you can turn that off; see the ethtool offload parameters.

关于获得对您创建的帧的完全控制——查看 PF_PACKET(一种方法)或 tap 驱动程序(另一种方法).

With regard to getting full control over the frames you create -- look into PF_PACKET (for one approach) or the tap driver (for another).

这是一篇关于使用 PF_PACKET 从 Python 发送手工制作的帧的文章.

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