问题背景路由器及连接PC配置如下：接口接口IP连接设备设备IPFa0/0192.168.0.2/24PC0192.168.0.1/24Fa0/1192.168.1.2/24PC1192.168.1.1/24Fa1/0192.168.2.2/24PC2192.168.2.1/24此时PC1与PC2、PC3为连通状态：C:\>ping192.168.1.1Pinging192.168.1.1with32bytesofdata:Replyfrom192.168.1.1:bytes=32timeping192.168.2.1Pinging192.168.2.1with32bytesofdata:Rep