一、PING程序原理1.ICMP协议PING程序实现的协议是ICMP，ICMP是(Internet Control Message Protocol)Internet控制报文协议。ICMP报文格式：它是TCP/IP协议族的一个子协议，用于在IP主机、路由器之间传递控制消息。控制消息是指网络通不通、主机是否可达、路由是否可用等网络本身的消息。这些控制消息虽然并不传输用户数据，但是对于用户数据的传递....

文章 2017-11-15 来自：开发者社区

不同主机下的xen虚拟机之间互ping

主体环境主机 node-master node1 ip地址 192.168.1.24 192.168.1.25 xen虚拟机ip 192.168.1.26 192.168.1.27 目的：使两台主机上的虚拟机192.168.1.26和192.168.1.27之间可以相互ping通，直接通讯。由于在两个主机上的配置是完全相同的，所以下面只讲述在node-mast...

文章 2016-11-02 来自：开发者社区

主机和虚拟机能相互ping通但是不能复制

1.本机能ping通虚拟机 2.虚拟机也能ping通本机 3.虚拟机能访问自己的web 4.本机无法访问虚拟己的web 后来发现是防火墙将80端口屏蔽了的缘故。检查是不是服务器的80端口被防火墙堵了，可以通过命令： telnet {服务器ip}80 来测试。解决方法如下： /sbin/iptables -I INPUT -p tcp --dport 80 -j ACCE...

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