2.2.
2.2
Nd (domains) | Nn (hosts) | |
A | 28 -2 | 224-2 |
B | 214 -2 | 216-2 |
C | 221-2 | 28 -2 |
䒺 multi-home host. IP-, 䒺 .
IP- , , , 䒺 .
, 璺 n , n IP-, 䒺.
2.1.3 IP-
IP- () ...ddd, ( 2.3). . IP- , :
2.3. IP
A | 0.1.0.0 | 126.0.0.0 |
B | 128.0.0.0 | 191.255.0.0 |
C | 192.0.1.0 | 223.255.255 |
D | 224.0.0.0 | 239.255.255.255 |
E | 240.0.0.0 | 247.255.255.255 |
2.1.4 .
IP- - ; - . . , .
, , , . . , , .
, SubNetID HostID. . - 32- , , NetID SubNetID, 1, HostID 0. :
< > = <IP- & >
IP . . ʳ .
2 , 6 . ֳ , . س , , 62 (64 , ), , , 255. 255. 255.192(11111111.11111111.11111111.11000000).
|
|
, 255.255.255.224 (11111111.11111111.11111111.11100000 )
, .
...0/ Y
, , , , . , 204. 251. 122.0 255.255.255.224 204.251.122.0/27, 27 32 , .
CIDR (Classless InterDomain Routing)
, , SubNetID , 8 . : 0xffffff00.
IP , IP :
- ;
- ;
- .
184.12.44.45 ( ), 255.255.255.0 ( SubNetID 8 ). , , IP- : 184.12.80.2, NetID , SubNetID (44 ¹ 80).
- 184.12.44.50, , , , NetID SubNetID ;
- 192.168.0.3 ( ) - NetID , .
ֳ , (), ', , .
2.1.5
Internet , . , 䳺 , , . ' , . , 16777214 A , 65534 B. , A B: A B B C. , , A .
C , . 192.168.255.0 255.255.255.0. 8 , 254 . , ( 255) ( 0) . - , C , 1 6 , 7 , 0 . , 255.255.255 . . , . 2 3 2.4-2.5.
|
|
2.4 2
2 255.255.255.192 | |
0: (00)2 | 192.168.255.1 192.168.255.62 |
1: (01)2 | 192.168.255.65 192.168.255.126 |
2: (10)2 | 192.168.255.129 192.168.255.190 |
3: (11)2 | 192.168.255.193 192.168.255.254 |
19210=(1100 0000)2, 4 , 62 .
2.5 3
3 255.255.255.224 | |
0: (000)2 | 192.168.255.1 192.168.255.30 |
1: (001)2 | 192.168.255.33 192.168.255.62 |
2: (010)2 | 192.168.255.65 192.168.255.94 |
3: (011)2 | 192.168.255.97 192.168.255.126 |
4: (100)2 | 192.168.255.129 192.168.255.158 |
5: (101)2 | 192.168.255.161 192.168.255.190 |
6: (110)2 | 192.168.255.193 192.168.255.222 |
7: (111)2 | 192.168.255.225 192.168.255.254 |
22410=(1110 0000)2, 8 , 30 .
:
- 4 255.255.255.240 16 14 ;
- 5 255.255.255.248 32 6 ;
- 6 255.255.255.252 64 2 .
24 IP- ( 192.168.255), , . 0 , 8 008, 0 63. , 0 63, 1 62. 2 108, 128 191. , 129 190, 62 . .
2.2
2.2.1
³ 10.1.0.0, : 7, : 55.
2.6 ip-
ʳ | ||||
10.1.0.0 | 10.1.0.63 | 10.1.0.2 | 10.1.0.57 | |
10.1.0.64 | 10.1.0.127 | 10.1.0.66 | 10.1.0.121 | |
10.1.0.128 | 10.1.0.191 | 10.1.0.130 | 10.1.0.185 | |
10.1.0.192 | 10.1.0.255 | 10.1.0.194 | 10.1.0.249 | |
10.1.1.0 | 10.1.1.63 | 10.1.1.2 | 10.1.1.57 | |
10.1.1.64 | 10.1.1.127 | 10.1.1.66 | 10.1.1.121 | |
10.1.1.128 | 10.1.1.191 | 10.1.1.130 | 10.1.1.185 | |
255.255.255.192 |
10.1.0.1 gateway (10.1.0.0 - ). gateway . 2.1.
|
|
2.2.2
2.1
Config (VLAN Database), VLAN Number , 2 (1 ), VLAN Name ( 2.2).
2.2
VLAN ( 2.3).
2.3
24 . 䒺 55 . , 3 , 䒺 , .
UP ( 2.4).
2.4
2.2.3
- ³ , ( 2.5).
2.5
- ³ , ( 2.6).
2.6
2.3
1. X Y . , X Y ( 2.7).
2.7
X | Y | ||
192.168.0.0 | |||
172.16.0.0 | |||
172.17.0.0 | |||
172.18.0.0 | |||
172.19.0.0 | |||
10.1.0.0 | |||
10.2.0.0 | |||
10.3.0.0 | |||
10.4.0.0 | |||
10.5.0.0 | |||
10.6.0.0 | |||
10.7.0.0 |
2. VLAN.
3. , .
4. , . 2.8.
2.8 IP-.
ʳ | ||||
5. Packet Tracer 5.0 LAN, . ʳ . 2 , IP- .
6. ' Cisco Catalyst 2960 .
7. ' , .
8. .
9. :
|
|
- , . ³ ;
- , . ³ .
2.4
1. VLAN? VLAN?
2. VLAN Ethernet?
3. , ?
4. ? ?
5. ? ?
?
6. ?
7. VLAN ?
8. VLAN?
9. ?
10. ?