ip 规划的重要性VLSM计算

ip地址分类
网络

A:1.0.0.0~126.255.255.255/8ide

B:128.0.0.0~191.255.255.255/16spa

c:192.0.0.0~223.255.255.255/243d

D:224.0.0.0~239.255.255.255blog

E;240.0.0.0~255.255.255.255ip

wKioL1l9lfiDaOVBAABvtZb1GYk448.jpg-wh_50

A地址有多少网络号呢。原本占用一位,2^7=128-2=126路由

有多少不一样的主机ipget

wKiom1l9nX7wKjOSAACtLBWFjKE346.jpg-wh_50

wKiom1l9nnLwYwndAACcA0LVDYU747.jpg-wh_50

wKiom1l9p43RSTU1AADPoncILxo134.jpg-wh_50

wKioL1l9qS3zytZcAADpUk9q6eM158.jpg-wh_50

wKiom1l9q2DChO95AAE-7uUYaj4573.jpg-wh_50

wKiom1l-D1uj_OqLAAE1GSAYN-8165.jpg-wh_50

wKioL1l-EM2SJe8TAACJOVLJV2Y997.jpg-wh_50


wKioL1l-ESeQS8u_AABSji2EYBk412.jpg-wh_50


wKiom1l-ElXyR5jcAACqiVgOXp4832.jpg-wh_50

再以小的再划分
it

wKiom1l-FK-j5tHFAADM7sealJ0850.jpg-wh_50

CIDR 无类域间汇总io

  之前面相同的掩码为相同网络号:

能够减小由核心路由器运载的路由选择信息的数量

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