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news 2025/11/17 12:27:15

要求:
1、整个网络IP地址为192.168.1.0/24，自己规划

2、area a区域手工设置R1为DR、R2为BDR

3、R3-R5之间使用密文认证方式

4.R1、R2、R5上配置环回接口，但是R5环回接口不能宣告进oSPF

5.全网可达

1.分ip

AR1 GE0/0/0： 192.168.1.1/28 
AR2 GE0/0/0： 192.168.1.2/28 
AR3 GE0/0/0： 192.168.1.3/28 
r3-r4
AR3： 192.168.1.17/30 
AR4： 192.168.1.18/30 
r4-r5
AR4： 192.168.1.21/30 
AR5： 192.168.1.22/30 
环回接口
AR1 LoopBack0： 192.168.1.100/32 
AR2 LoopBack0： 192.168.1.101/32 
AR5 LoopBack0： 192.168.1.102/32

2.配置

[r1]int l0
[r1-LoopBack0]ip a 192.168.1.100 32
[r1-LoopBack0]int g 0/0/0
[r1-GigabitEthernet0/0/0]ip a 192.168.1.1 28
[r1]ospf 1 router-id 192.168.1.100
[r1-ospf-1]area 0
[r1-ospf-1-area-0.0.0.0]network 192.168.1.100 0.0.0.0
[r1-ospf-1-area-0.0.0.0]network 192.168.1.1 0.0.0.0
[r1]display ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: PublicDestinations : 9        Routes : 9        Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface127.0.0.0/8   Direct  0    0           D   127.0.0.1       InLoopBack0127.0.0.1/32  Direct  0    0           D   127.0.0.1       InLoopBack0
127.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0192.168.1.0/28  Direct  0    0           D   192.168.1.1     GigabitEthernet
0/0/0192.168.1.1/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
0/0/0192.168.1.15/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
0/0/0192.168.1.100/32  Direct  0    0           D   127.0.0.1       LoopBack0192.168.1.101/32  OSPF    10   1           D   192.168.1.2     GigabitEthernet
0/0/0
255.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0

[r2]int l0
[r2-LoopBack0]ip a 192.168.1.101 32
[r2-LoopBack0]int g 0/0/0
[r2-GigabitEthernet0/0/0]ip a 192.168.1.2 28
[r2]ospf 1 router-id 192.168.1.101
[r2-ospf-1]area 0
[r2-ospf-1-area-0.0.0.0]network 192.168.1.2 0.0.0.0
[r2]display ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: PublicDestinations : 9        Routes : 9        Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface127.0.0.0/8   Direct  0    0           D   127.0.0.1       InLoopBack0127.0.0.1/32  Direct  0    0           D   127.0.0.1       InLoopBack0
127.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0192.168.1.0/28  Direct  0    0           D   192.168.1.2     GigabitEthernet
0/0/0192.168.1.2/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
0/0/0192.168.1.15/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
0/0/0192.168.1.100/32  OSPF    10   1           D   192.168.1.1     GigabitEthernet
0/0/0192.168.1.101/32  Direct  0    0           D   127.0.0.1       LoopBack0
255.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0

[r3]int g 0/0/0
[r3-GigabitEthernet0/0/0]ip a 192.168.1.3 28
[r3-GigabitEthernet0/0/0]int g 0/0/1
[r3-GigabitEthernet0/0/1]ip a 192.168.1.17 30
[r3]ospf 1
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]network 192.168.1.3 0.0.0.0
[r3]ospf 1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]network 192.168.1.17 0.0.0.0
[r3]int g 0/0/0
[r3-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456

[r4]int g 0/0/0
[r4-GigabitEthernet0/0/0]ip a 192.168.1.18 30
[r4-GigabitEthernet0/0/0]int g 0/0/1
[r4-GigabitEthernet0/0/1]ip a 192.168.1.20 30
[r4]ospf 1
[r4-ospf-1]area 1
[r4-ospf-1-area-0.0.0.1]network 192.168.1.18 0.0.0.0
[r4-ospf-1-area-0.0.0.1]network 192.168.1.20 0.0.0.0
[r4]int g 0/0/0
[r4-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456
[r4]display ip routing-table
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Routing Tables: PublicDestinations : 8        Routes : 8        Destination/Mask    Proto   Pre  Cost      Flags NextHop         Interface127.0.0.0/8   Direct  0    0           D   127.0.0.1       InLoopBack0127.0.0.1/32  Direct  0    0           D   127.0.0.1       InLoopBack0
127.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0192.168.1.0/28  OSPF    10   2           D   192.168.1.17    GigabitEthernet
0/0/0192.168.1.16/30  Direct  0    0           D   192.168.1.18    GigabitEthernet
0/0/0192.168.1.18/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
0/0/0192.168.1.19/32  Direct  0    0           D   127.0.0.1       GigabitEthernet
0/0/0
255.255.255.255/32  Direct  0    0           D   127.0.0.1       InLoopBack0

[r5]int g 0/0/0
[r5-GigabitEthernet0/0/0]ip a 192.168.1.21 30
[r5-GigabitEthernet0/0/0]int l0
[r5-LoopBack0]ip a 192.168.1.102 32
[r5-LoopBack0]q
[r5]ospf 1
[r5-ospf-1]area 1
[r5-ospf-1-area-0.0.0.1]network 192.168.1.21 0.0.0.0
[r5-ospf-1-area-0.0.0.1]q
[r5-ospf-1]q
[r5]int g 0/0/0
[r5-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456

老师哇达西感觉都写着了但俺就只能ping到一个……

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