子网划分将网络拆分成较小的网络 [英] Subnetting to split network into smaller networks

问题描述

我一直在解决这个问题，但没有取得太大进展.有人可以帮我吗?

I've been working on this problem but haven't made much progress. Could someone help me out?

为您的公司分配了网络地址214.56.78.0/24.该公司有五个工作组 支持:管理(11台主机)，销售(32台主机)，客户支持(41台主机)，支持服务器(8台主机)， Web和数据库服务(37个主机).管理层希望每家公司都能实现10％的增长 团体.管理层还希望拥有一个未使用地址的池"，以备将来使用.公司 安全组希望您设置网络，以使五个工作组位于不同的网络上 段.使用子网划分将/24网络划分为较小的网络.列出网络，网络掩码， 并告诉您设计中浪费"了多少IP地址.

Your company is assigned the network address 214.56.78.0/24. The company has five work groups to support: Administration (11 hosts), Sales (32 hosts), Customer Support (41 hosts), Support servers (8 hosts), Web and Database Services (37 hosts). Management would like to provide for 10 percent growth in each group. Management would also like to have a "pool" of unused addresses for future use. The corporate security group wants you to set the network up such that the five work groups are on different network segments. Use subnetting to break the /24 network into smaller networks. List the networks, the netmasks, and tell how many IP addresses are "wasted" in your design.

推荐答案

您需要使用 VariableLengthSubnetMasking .

1.从用户最多的子网开始，然后逐步解决问题.

1.Start with the subnet for the most users and work your way down.

• 客户支持41 + 4
• 网络和数据库服务37 + 4
• 销售32 + 3
• 管理11 +1
• 支持服务器8 +1

客户支持:需要45个主机

2^6= 64-2 = 62 usable hosts.
214.56.78.SSNNNNNN -> 2 subnet bits and 6 host bits
Customer Support: 214.56.78.0/26 - 214.56.78.1 - 214.56.78.63

网络和数据库服务:需要41台主机

2^6 = 64-2 = 62 usable hosts
214.56.78.SSNNNNNN -> 2 subnet bits and 6 host bits
Web and Database Services: 214.56.78.64/26 - 214.56.78.64 - 214.56.78.127

销售:需要35位主机

2^6 = 64-2 = 62 usable hosts
214.56.78.SSNNNNNN -> 2 subnet bits and 6 host bits
Sales: 214.56.78.128/26 - 214.56.78.128 - 214.56.78.191

管理:需要12个主机

2^4 = 16-2 = 14 usable hosts
214.56.78.SSSSNNNN -> 4 subnet bits and 4 host bits
Administration: 214.56.78.192/28 - 214.56.78.192 - 214.56.78.207

支持服务器:需要9台主机

2^4 = 16-2 = 14 usable hosts
214.56.78.SSSSNNNN -> 4 subnet bits and 4 host bits
Support Servers: 214.56.78.208/28 - 214.56.78.208 - 214.56.78.223

未使用的池:剩余的资源

2^5= 32 - 2 = 30 usable hosts
214.56.78.SSSNNNNN -> 3 subnet bits and 5 host bits
Unused Pool: 214.56.78.224/27 - 214.56.78.224 - 214.56.78.255

摘要！

Customer Support: 214.56.78.0/26
Web and Database Services: 214.56.78.64/26
Sales: 214.56.78.128/26
Administration: 214.56.78.192/28
Support Servers: 214.56.78.208/28
Unused Pool: 214.56.78.224/27

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