将给定网络划分为4个子网 [英] Dividing a given network in 4 subnets
问题描述
假设我获得了网络(57.70.32.0/21),我需要将其划分为4个大小相同的网络。
Lets suppose I get given the network (57.70.32.0/21) and I need to divide it into 4 equally sized networks.
我知道目前的掩码是(255.255.248.0),但我需要将给定的网络前缀长度更改为26,这样我才能得到4等于大小子网?基本上这是我最大的问题,如果我应该使用第4个八位字节进行子网划分或留在第3个进行。
I know the mask at the moment is (255.255.248.0) but would I need to change the prefix length of the network given to 26 so I can get the 4 equal size subnets? Basically that's my biggest question and also if I should then use the 4th octet for subnetting or stay with the 3rd to do it.
非常感谢任何帮助。
推荐答案
你可以分开您的ips分为4个网络,每个网络有510个IP,不包括网关,广播和网络ID。
you can divide your ips into 4 networks with 510 IPs each, not counting gateway, broadcast, and net id.
每个网络的cidr为/ 23,相当于子网255.255.254.0
each net will have a cidr of /23 which would equate to subnet 255.255.254.0
你可以划分它们分为以下子网:
you could divide them into subnets as follows:
57.70.32.0/23
first address: 57.70.32.0
last address: 57.70.33.255
57.70.34.0/23
first address: 57.70.34.0
last address: 57.70.35.255
57.70.36.0/23
first address: 57.70.36.0
last address: 57.70.37.255
57.70.38.0/23
first address: 57.70.38.0
last address: 57.70.39.255
这篇关于将给定网络划分为4个子网的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!