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W5500在处于TCP_Server模式下,在交换机/路由器网络中无法ping通也无法通讯。
2022-07-25 10:49:00 【WIZnet】
在芯片处于TCP_Server模式下,在交换机/路由器网络中无法ping通也无法通讯。
R: WIZnet芯片是硬件协议栈芯片,有别于软件协议栈,如果芯片不主动往网络中发包,在TCP_Server模式下是不会有任何数据包发送的,这样会造成路由ARP表中无法形成IP和MAC设备的对应关系。
A:解决方案:
在芯片上电时往任意IP发送一个UDP数据包,从而更新路由的ARP表,形成匹配关系,后续通讯就正常了。
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