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网络IP地址 A类B类C类地址

时间:2023-05-06 08:57:46 阅读:220312 作者:475

IP地址ABC概念 连在某个网络上的两台计算机在相互通信时,在它们所传送的数据包里含有某些附加信息,这些附加信息就是发送数据的计算机的地址和接受数据的计算机的地址。当网络中存在以<a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" href="https://www.baidu.com/s?wd=IP%E5%8D%8F%E8%AE%AE&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">IP协议</a>为基础的通信时,这些发送和接受数据的地址就是IP地址。 基本地址格式 现在的<a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" href="https://www.baidu.com/s?wd=IP%E7%BD%91%E7%BB%9C&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">IP网络</a>使用32位地址,以<a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" href="https://www.baidu.com/s?wd=%E7%82%B9%E5%88%86%E5%8D%81%E8%BF%9B%E5%88%B6&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">点分十进制</a>表示,如172.16.0.0。地址格式为:IP地址=网络地址+<a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="https://www.baidu.com/s?wd=%E4%B8%BB%E6%9C%BA%E5%9C%B0%E5%9D%80&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">主机地址</a> 或 IP地址=<a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="https://www.baidu.com/s?wd=%E4%B8%BB%E6%9C%BA%E5%9C%B0%E5%9D%80&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">主机地址</a>+子网地址+<a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" rel="external nofollow" rel="external nofollow" href="https://www.baidu.com/s?wd=%E4%B8%BB%E6%9C%BA%E5%9C%B0%E5%9D%80&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">主机地址</a>。 IP地址类型 最初设计互联网络时,为了便于寻址以及层次化构造网络,每个IP地址包括两个标识码(ID),即网络ID和主机ID。同一个物理网络上的所有主机都使用同一个网络ID,网络上的一个主机(包括网络上工作站,服务器和路由器等)有一个主机ID与其对应。IP地址根据网络ID的不同分为5种类型,<a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" href="https://www.baidu.com/s?wd=A%E7%B1%BB%E5%9C%B0%E5%9D%80&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">A类地址</a>、<a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" href="https://www.baidu.com/s?wd=B%E7%B1%BB%E5%9C%B0%E5%9D%80&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">B类地址</a>、<a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" href="https://www.baidu.com/s?wd=C%E7%B1%BB%E5%9C%B0%E5%9D%80&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">C类地址</a>、<a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" href="https://www.baidu.com/s?wd=D%E7%B1%BB%E5%9C%B0%E5%9D%80&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">D类地址</a>和<a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" href="https://www.baidu.com/s?wd=E%E7%B1%BB%E5%9C%B0%E5%9D%80&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">E类地址</a>。 1. <a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" rel="external nofollow" href="https://www.baidu.com/s?wd=A%E7%B1%BBIP%E5%9C%B0%E5%9D%80&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">A类IP地址</a> 一个<a target=_blank target="_blank" class="baidu-highlight" rel="external nofollow" rel="external nofollow" href="https://www.baidu.com/s?wd=A%E7%B1%BBIP%E5%9C%B0%E5%9D%80&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4rjuWnWcLmHTvmWT4nj-b0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EP1RsnWmYP6" rel="nofollow">A类IP地址</a>由1字节的网络地址和3字节主机地址组成,网络地址的最高位必须是“0”, 地址范围从1.0.0.0 到126.0.0.0。可用的A类网络有126个,每个网络能容纳1亿多个主机。 2. B类IP地址 一个B类IP地址由2个字节的网络地址和2个字节的主机地址组成,网络地址的最高位必须是“10”,地址范围从128.0.0.0到191.255.255.255。可用的B类网络有16382个,每个网络能容纳6万多个主机 。 3. C类IP地址 一个C类IP地址由3字节的网络地址和1字节的主机地址组成,网络地址的最高位必须是“110”。范围从192.0.0.0到223.255.255.255。C类网络可达209万余个,每个网络能容纳254个主机。 4. D类地址用于多点广播(Multicast)。 D类IP地址第一个字节以“lll0”开始,它是一个专门保留的地址。它并不指向特定的网络,目前这一类地址被用在多点广播(Multicast)中。多点广播地址用来一次寻址一组计算机,它标识共享同一协议的一组计算机。 5. E类IP地址 以“llll0”开始,为将来使用保留。 全零(“0.0.0.0”)地址对应于当前主机。全“1”的IP地址(“255.255.255.255”)是当前子网的广播地址。 在IP地址3种主要类型里,各保留了3个区域作为私有地址,其地址范围如下: A类地址:10.0.0.0~10.255.255.255 B类地址:172.16.0.0~172.31.255.255 C类地址:192.168.0.0~192.168.255.255

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