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inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-align: left; text-indent: 30px;">对于ip地址我们前面经过屡次文章，大师都有一定的了解，不外经过的留言，有部分朋友还是对子网掩码、ip地址的网段有些疑问，那末明天我们一路来解下这方面的内容他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">
portant;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important;">一、什么是子网掩码？
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-align: left; text-indent: 30px;">在领会ip地址的网段之前，我们先来领会子网掩码，很多对收集领会不深的朋友都对子网掩码有些迷惑， 不领会它是用来干什么的？
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-align: left; text-indent: 30px;">子网掩码不能零丁存在，它必须连系IP地址一路利用他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。子网掩码只要一个感化，就是将某个IP地址分别红收集地址和主机地址两部分他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-align: left; text-indent: 30px;">说的浅显的话，就是用来朋份子网和区分那些ip是同一个网段的，那些不是同一网段的他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">例如，两小我都叫张三，但一个张三是张家村的，另一个张三是张村的，那末若何区分这两个张三别离是属于阿谁村的呢？得让村长来区分，便可以正确的把各自的张三领回村，那末子网掩码就相当于村长，它就是用来区分ip该ip地址是属于阿谁网段的他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">在现实项目中，我们凡是会碰到这样的ip地址他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">ip地址：192.168.1.1 子网掩码：255.255.255.0
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">ip地址：192.168.1.2 子网掩码：255.255.255.0
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">我们可以间接的判定，他们是同属于一个网段的ip地址他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px; color: rgb(217, 33, 66);">那末对于下面这样的呢？
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">ip地址：192.168.1.1 子网掩码：255.255.255.0
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">ip地址：192.168.1.2 子网掩码：255.255.0.0
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">这两个ip地址虽然在不看掩码的情况下，比力像，但他们并不是同一个网段内的他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">这个可以从子网掩码来判定，
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">192.168.1.1 255.255.255.0是属于192.168.1.0网段的他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">而192.168.1.2 255.255.0.0是属于192.168.0.0网段他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">
portant;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important;">二、若何按照掩码来肯定ip地址网段
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">上面我们已经举例领会了子网掩码的感化，接下来我们再来领会若何肯定子网掩码和判定ip地址的网段他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 2em; box-sizing: border-box !important; overflow-wrap: break-word !important;">
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-indent: 0em; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">凡是我们在分别vlan的时辰会利用以下例子：
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-indent: 0em; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(217, 33, 66);">portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">例1：
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-indent: 0em; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">建立vlan1：ip地址：192.168.1.1 子网掩码：255.255.255.0
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-indent: 0em; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">建立vlan2: ip地址：192.168.2.1 子网掩码：255.255.255.0
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-indent: 0em; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">那末他们能否是在同一个网段呢？平常设置ip地址较多的朋友，可以直观的判定，他们并不是属于同一个网段，那末若何计较呢？portant; overflow-wrap: break-word !important; font-family: "Microsoft Yahei", 微软雅黑, arial, 宋体, sans-serif; font-size: 16px;">要想判定两个ip地址能否是在同一个网段，只需将ip地址与子网掩码做与运算，假如得出的成果一样，则这两个ip地址是同一个子网傍边他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
portant;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important;">具体计较
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">将ip地址192.168.1.1转换为二进制
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11000000 10101000 00000001 00000001
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">将子网掩码255.255.255.0转换成二进制
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11111111.11111111.11111111.00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">然后将两者相“与（and）"运算：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11000000 10101000 00000001 00000001
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11111111.11111111.11111111.00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">然后获得：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11000000 10101000 00000001 00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">转换成收集号就是：192.168.1.0
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">将ip地址192.168.2.1转换为二进制
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11000000 10101000 00000010 00000001
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">将子网掩码255.255.255.0转换成二进制
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11111111.11111111.11111111.00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">然后将两者相“与（and）"运算：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11000000 10101000 00000010 00000001
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11111111.11111111.11111111.00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">然后获得：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11000000 10101000 00000010 00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">转换成收集号就是：192.168.2.0
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">很明显，两者的成果是纷歧样的，一个是网段portant; overflow-wrap: break-word !important; letter-spacing: 0.544px;">192.168.1.0，一个是网段portant; overflow-wrap: break-word !important; letter-spacing: 0.544px;">192.168.2.0，所以不是一个网段他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-indent: 0em; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-indent: 0em; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(217, 33, 66);">portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; letter-spacing: 2px; text-indent: 30px; font-family: "Microsoft Yahei", 微软雅黑, arial, 宋体, sans-serif; font-size: 16px;">例2
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-indent: 0em; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">ip地址1：192.168.1.1 子网掩码：255.255.252.0
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-indent: 0em; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px; text-indent: 30px;">ip地址2：192.168.2.1 子网掩码：255.255.252.0
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-indent: 0em; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); letter-spacing: 2px; text-indent: 30px; font-family: "Microsoft Yahei", 微软雅黑, arial, 宋体, sans-serif; font-size: 16px;">很明显，我们这个和上面例1的ip地址是一样的，只是子网掩码纷歧样，假如不看子网掩码，首先能够就判定他们不是同一个网段他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-indent: 0em; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); letter-spacing: 2px; text-indent: 30px; font-family: "Microsoft Yahei", 微软雅黑, arial, 宋体, sans-serif; font-size: 16px;">这里面和上面例1中唯一变化就是子网掩码从portant; overflow-wrap: break-word !important; font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px;">255.255.255.0换成了portant; overflow-wrap: break-word !important;">255.255.252.0了，那我们来看下，他们能否属于同一个网段他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
portant;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important;">具体计较
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">将ip地址192.168.1.1转换为二进制
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11000000 10101000 00000001 00000001
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">将子网掩码255.255.252.0转换成二进制
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11111111.11111111.11111100.00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">然后将两者相“与（and）"运算：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11000000 10101000 00000001 00000001
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11111111.11111111.11111100.00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">然后获得：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11000000 10101000 00000000 00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">转换成收集号就是：192.168.0.0
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">将ip地址192.168.2.1转换为二进制
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11000000 10101000 00000010 00000001
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">将子网掩码255.255.252.0转换成二进制
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11111111.11111111.11111100.00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">然后将两者相“与（and）"运算：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11000000 10101000 00000010 00000001
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11111111.11111111.11111100.00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">然后获得：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">11000000 10101000 00000000 00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">转换成收集号就是：192.168.0.0
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">很明显，两者的成果是一样的，都是属于192.168.0.0网段，所以他们是同属于一个网段他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 30px; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px;">固然，假如对子网较熟了就不需要经过这些运算了，大部分的网段可以经过度析子网掩码与ip地址便可以判定出来能否属于网一网段，但条件是你需要熟悉网段的道理与运算的方式他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; white-space: normal; text-indent: 30px; box-sizing: border-box !important; overflow-wrap: break-word !important;">
portant;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important;">三、若何按照ip地址推算子网掩码
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px; letter-spacing: 2px; color: rgb(217, 33, 66);">portant; overflow-wrap: break-word !important;">肯定ip地址子网掩码
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px;">大部分的情况下，我们收集合只要不跨越254台主机的的话，子网掩码都可以设备成255.255.255.0他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。那末跨越了254台主机的话怎样办呢？
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px;">可以分别vlan，也可以设备成一个大网段，分别vlan我们就不说了，上面有例子，设备成一个大网段就有一个难点，若何肯定这个大网段里面的子网掩码呢？
portant;">portant; overflow-wrap: break-word !important;">例如
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">假定监控收集合有600个点位，我们现在也不想把它分别vlan（现实项目中大部分是会分别vlan的），假定只想用一个大网段把这600个点位分派ip地址，若何设备ip地址，若何确切子网掩码？
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important;">分析：首先我们晓得600个点位，可以利用3个254个ip地址段来分派他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">可以利用
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">ip段一：192.168.0.1——192.168.0.254
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important; letter-spacing: 0.544px;">ip段二：192.168.1.1——192.168.1.254
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important; letter-spacing: 0.544px;">ip段三：192.168.2.1——192.168.2.254
portant; overflow-wrap: break-word !important;">
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">每个网段有254个ip地址，完全够600个点位用的他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
那末题目来了，假如要使这三个ip段在同一个网段内，那末这个大网段配合的子网掩码是几多呢？
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">我们来分析下：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">将ip地址192.168.0.1转换为二进制
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important; color: rgb(217, 33, 66);">11000000 10101000 00000000 00000001
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">将ip地址192.168.1.1转换为二进制
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important; color: rgb(217, 33, 66);">11000000 10101000 00000001 00000001
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">将ip地址192.168.2.1转换为二进制
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important; color: rgb(217, 33, 66);">11000000 10101000 00000010 00000001
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">转换成了二进制，可以看得出，三个ip段的二进制前面22位的是稳定的，那末可以将他们暗示成：
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">ip段一：192.168.0.1/22
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important; letter-spacing: 0.544px;">ip段二：192.168.1.1/22
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">portant; overflow-wrap: break-word !important; letter-spacing: 0.544px;">ip段三：192.168.2.1/22
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">这类portant; overflow-wrap: break-word !important; letter-spacing: 0.544px;">192.168.2.x/22形式的ip地址相信大师平常都见过，就是已经告诉了子网掩码了他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">也就是说他们配合的子网掩码二进制前面22个都是1他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; letter-spacing: 2px; background-color: rgb(255, 255, 255); font-size: 15px;">11111111 11111111 11111100 00000000
portant; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; font-size: 15px;">转换成十进制，那就是255.255.252.0，所以他们配合的子网掩码就是portant; overflow-wrap: break-word !important; letter-spacing: 0.544px;">255.255.252.0他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
inkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif; font-size: 17px; letter-spacing: 0.544px; text-align: justify; white-space: normal; box-sizing: border-box !important; overflow-wrap: break-word !important;">portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px;">固然在现实项目中，与收集打仗较多的弱电人不需要经过一系列的换算，间接可以经过简单的判定预算出来这个大网段的子网掩码，是以，明天弱电君是讲道理，方便大师了解，所以一切的换算都是经过运算出来的他早就发现系统有个隐藏的缝隙私下花了好几个早晨优化了代码。
portant; overflow-wrap: break-word !important; color: rgb(84, 84, 84); font-family: 微软雅黑, 宋体, 黑体, Arial, Helvetica, sans-serif; font-size: 15px; letter-spacing: 2px;"> |
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发表于 2025-7-26 14:03