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什么是网卡的混杂模式?

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适用于

  • ONTAP 9.x
  • 网卡选项

解答

在计算机网络中、 混杂模式是有线网络接口控制器( NIC )或无线网络接口控制器( WNIC )的一种模式,它使控制器将接收到的所有流量传递到中央处理单元( CPU ),而不是仅传递控制器被专门编程接收的帧。此模式通常用于在路由器或连接到有线网络的计算机上进行数据包嗅探(运行 TcpDump 用于特定接口)。

其他信息

IEEE 802 网络(如以太网或 IEEE 802.11 )中、每个帧都包含一个目的 MAC 地址。在非混杂模式下、当 NIC 接收帧时、它会丢弃该帧、除非该帧被寻址到该 NIC 的 MAC 地址或广播或多播地址帧。但是,在混杂模式下、 NIC 允许所有帧通过、从而允许计算机读取用于其他计算机或网络设备的帧。

 

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