윈도우 브로드캐스트 어드레스 설정?

지리즈의 이미지

윈도우 IP 설정하는 부분에 보면,
IP 주소, 서브넷 마스크, 기본 게이트웨이 주소 3가지만 있습니다.
(DNS 서버 설정은 생략)

만약,

IP 주소 : 192.168.100.101
서브넷: 255.255.255.128
게이트웨이: 192.168.100.100

이면 network address나 broadcast의 IP는 어떻게 될까요?

설정을 할 수가 없네요 ^^

문척 신기...

superwisdom의 이미지

network address = 192.168.100.0
broadcast address = 192.168.100.127
아닌가요?

지리즈의 이미지

위의 조건을 만족하는 답은... 아래와 같습니다.

NA : 192.168.100.0   BR: 192.168.100.127
NA : 192.168.100.4   BR: 192.168.100.131
NA : 192.168.100.8   BR: 192.168.100.135
NA : 192.168.100.12 BR: 192.168.100.139
NA : 192.168.100.16 BR: 192.168.100.143
NA : 192.168.100.20 BR: 192.168.100.147
NA : 192.168.100.24 BR: 192.168.100.151
NA : 192.168.100.28 BR: 192.168.100.155
NA : 192.168.100.32 BR: 192.168.100.159
NA : 192.168.100.36 BR: 192.168.100.163
NA : 192.168.100.40 BR: 192.168.100.167
NA : 192.168.100.44 BR: 192.168.100.171
NA : 192.168.100.48 BR: 192.168.100.175
NA : 192.168.100.52 BR: 192.168.100.179
NA : 192.168.100.56 BR: 192.168.100.183
NA : 192.168.100.60 BR: 192.168.100.187
NA : 192.168.100.64 BR: 192.168.100.191
NA : 192.168.100.68 BR: 192.168.100.195
NA : 192.168.100.72 BR: 192.168.100.199
NA : 192.168.100.76 BR: 192.168.100.203
NA : 192.168.100.80 BR: 192.168.100.207
NA : 192.168.100.84 BR: 192.168.100.211
NA : 192.168.100.88 BR: 192.168.100.215
NA : 192.168.100.92 BR: 192.168.100.219
NA : 192.168.100.96 BR: 192.168.100.223

There is no spoon. Neo from the Matrix 1999.

g0rg0n의 이미지

그러고보니 vlsm이란게 있었죠..

18

cleansugar의 이미지

http://www.tech-faq.com/broadcast-address.html

Changing windows systems broadcast addresses

Windows systems do not allow you to change the broadcast address by hand. You can, however, choose whether the system uses zeros-broadcasts or ones-broadcasts. To change a windows system to use zeros-broadcasts, use the following procedure:
• Log into the windows system with an account with administrator rights.
• Open your registry editor. If you are not knowledgable in using the registry editor for windows, please do not perform these steps. A mistake can make your system unusable.
• Find the registry key "HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServices TcpipParametersInterfaces[Adapter ID]". Replace [Adapter ID] with the actual adapter ID you want to change the broadcast address for. You can get a list of all the adapter IDs in your windows system by opening a command line prompt, and executing a "ipconfig /all" command.
• Create a new DWORD value called "UseZeroBroadcast". Set its inital value to "1". You can use a hex or binary value in this case, since 1 is the same for both numbering systems.
• Reboot your system for the changes to take effect.

You have enabled zeros-broadcast for that adapter.

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