Écrit par CCNA
|
26-05-2008 |
- Subnet 192.168.10.0/27
-
Step 1 : IP class
192.168.10.0/27 (classless) --> 192.168.10.0/24 (C- class)
-
Step 2 : host part
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
1 |
1 |
1
|
0 |
0 |
0 |
0 |
0 |
--> 27+26+25 = 128+64+32 = 224
-
Step 3 : number of subnets
23-2 = 6 subnets available
-
Step 4 : number of hosts per subnet
25-2 = 30 hosts per subnet
-
Step 5 : block size
Block size = 256-224 = 32
-
Step 6 : subnet mask
Subnet mask = 255.255.255.224
-
Step 7 : subnets and their characteristics
N° |
NetID
|
IP range |
Broadcast
|
1 |
192.168.10.32 |
33-->62 |
192.168.10.63 |
2 |
192.168.10.64 |
65-->94 |
192.168.10.95 |
3 |
192.168.10.96 |
97-->126 |
192.168.10.127 |
4 |
192.168.10.128 |
129-->158 |
192.168.10.159 |
5 |
192.168.10.160 |
161-->190 |
192.168.10.191 |
6 |
192.168.10.192 |
193-->222 |
192.168.10.223 |
- Subnet 192.168.10.0/28
-
Step 1 : IP class
192.168.10.0/28 (classless) --> 192.168.10.0/24 (C- class)
-
Step 2 : host part
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
1 |
1 |
1
|
1
|
0 |
0 |
0 |
0 |
--> 27+26+25+24 = 128+64+32+16 = 240
-
Step 3 : number of subnets
24-2 = 14 subnets available
-
Step 4 : number of hosts per subnet
24-2 = 14 hosts per subnet
-
Step 5 : block size
Block size = 256-240 = 16
-
Step 6 : subnet mask
Subnet mask = 255.255.255.240
-
Step 7 : subnets and their characteristics
N° |
NetID
|
IP range |
Broadcast
|
1 |
192.168.10.16 |
17-->30 |
192.168.10.31 |
2 |
192.168.10.32 |
33-->46 |
192.168.10.47 |
|
|
|
|
14 |
192.168.10.224 |
225-->238 |
192.168.10.239 |
- Subnet 200.100.10.0/29
-
Step 1 : IP class
200.100.10.0/29 (classless) --> 200.100.10.0/24 (C- class)
-
Step 2 : host part
27 |
26 |
25 |
24 |
23 |
22 |
21 |
20 |
1 |
1 |
1
|
1
|
1
|
0 |
0 |
0 |
--> 27+26+25+24+23 = 128+64+32+16+8 = 248
-
Step 3 : number of subnets
25-2 = 30 subnets available
-
Step 4 : number of hosts per subnet
23-2 = 6 hosts per subnet
-
Step 5 : block size
Block size = 256-248 = 8
-
Step 6 : subnet mask
Subnet mask = 255.255.255.248
-
Step 7 : subnets and their characteristics
N° |
NetID
|
IP range |
Broadcast
|
1 |
200.100.10.8 |
9-->14 |
200.100.10.15 |
2 |
200.100.10.16 |
17-->22 |
200.100.10.23 |
|
|
|
|
6 |
200.100.10.240 |
241-->246 |
200.100.10.247 |
|
Dernière mise à jour : ( 06-06-2008 )
|