QUIZ 1)
199.9.9.0 /24 를 서브넷 8개로 서브넷팅 하시오
각 서브넷 8개의 Network Address, Broadcast Address, 할당가능 IP를 쓰시오
32씩
199.9.9.0 ~ 199.9.9.31
Net Addr : 199.9.9.0
Broadcast Addr : 199.9.9.31
할당가능IP : 199.9.9.1 ~ 199.9.9.30
prefix 199.9.9.0 /27 255.255.255.32
199.9.9.32 ~ 199.9.9.62
Net Addr : 199.9.9.32
Broadcast Addr : 199.9.9.62
할당가능IP : 199.9.9.33 ~ 199.9.9.61
199.9.9.63 ~ 199.9.9.94
Net Addr : 199.9.9.63
Broadcast Addr : 199.9.9.94
할당가능IP : 199.9.9.64 ~ 199.9.9.93
199.9.9.95 ~ 199.9.9.127
Net Addr : 199.9.9.95
Broadcast Addr : 199.9.9.127
할당가능IP : 199.9.9.96 ~ 199.9.9.126
199.9.9.128 ~ 199.9.9.159
Net Addr : 199.9.9.128
Broadcast Addr : 199.9.9.159
할당가능IP : 199.9.9.129 ~ 199.9.9.158
199.9.9.160 ~ 199.9.9.191
Net Addr : 199.9.9.160
Broadcast Addr : 199.9.9.191
할당가능IP : 199.9.9.161 ~ 199.9.9.190
199.9.9.192 ~ 199.9.9.223
Net Addr : 199.9.9.192
Broadcast Addr : 199.9.9.223
할당가능IP : 199.9.9.193 ~ 199.9.9.222
199.9.9.224 ~ 199.9.9.255
Net Addr : 199.9.9.224
Broadcast Addr : 199.9.9.255
할당가능IP : 199.9.9.225 ~ 199.9.9.254
QUIZ 2)
200.1.2.0/24 를 16개 서브넷팅 할 경우
256/16 = 한 범위당 16개의 호스트
prefix = 200.1.2.0 /28
200.1.2.0 ~ 200.1.2.16
Net Addr : 200.1.2.0 Bc Addr : 200.1.2.16 할당IP : 200.1.2.1 ~ 200.1.2.15
sm : 1111 1111 . 1111 1111 . 1111 1111 . 1111 0000 = 255.255.255.240
/28 240
/27 224
/26 192
/25 128
QUIZ 3) 100.1.2.0 /24 네트워크를 서브넷팅 하시오.
하나의 서브넷에 IP 30개가 필요하다.
Network ID, Host ID ? subnet이 몇개 ?
prefix를 Subnetmask로 변환
100.1.2.0 /24 255.0.0.0 = 1111 1111 . 0000 0000 . 0000 0000 . 0000 0000
IP가 30개 = Host ID 5bit(32개) = 서브넷 갯수 2^3 8개
256/8 = 32
100.1.2.0 ~ 100.1.2.31
Network Addr : 100.1.2.0 /27 Bc Addr : 100.1.2.31 할당IP : 100.1.2.1 ~ 100.1.2.30
subnet mask : 255.255.255.224
100.1.2.32 ~ 100.1.2.63
100.1.2.64 ~ 100.1.2.95
100.1.2.96 ~ 100.1.2.127
100.1.2.128 ~ 100.1.2.159
100.1.2.160 ~ 100.1.2.191
100.1.2.192 ~ 100.1.2.223
100.1.2.224 ~ 100.1.2.255
QUIZ 4)
Main IP : 212.34.56.0 /24
라우터사이에도 IP할당
Router 1 = ip 90개
Router 2 = ip 50개
Router 3 = ip 20개
212.34.56.0 /25 SM 255.255.255.128
212.34.56.0 ~ 212.34.56.127 ( subnet분할 1 )
212.34.56.1 ~ 212.34.56.90 ( Network A )
212.34.56.91 ~ 212.34.56.126 (잔여 IP)
212.34.56.128 /26 SM 255.255.255.192
212.34.56.128 ~ 212.34.56.191 ( subnet 분할 2 )
212.34.56.129 ~ 212.34.56.178 ( Network B )
212.34.56.179 ~ 212.34.56.190 (잔여 IP)
212.34.56.192 /27 SM 255.255.255.224
212.34.56.192 ~ 212.34.56.223 ( subnet 분할 3 )
212.34.56.193 ~ 212.34.56.212 ( Network C )
212.34.56.213 ~ 212.34.56.222 (잔여 IP)
212.34.56.224 /30 SM 255.255.255.252
212.34.56.224~ 212.34.56.227 ( subnet 분할 4 )
212.34.56.225 ~ 212.34.56.226 ( Network D )
212.34.56.228 /30 SM 255.255.255.252
212.34.56.228 ~ 212.34.56.231 ( subnet 분할 5 )
212.34.56.229 ~ 212.34.56.230 ( Network E )
