1
1.配置设备名称、接口地址。
2
R1：
3
sys
4
sysname R1
5
undo info-center enable
6
user-interface con 0
7
idle-timeout 0 0
8
int gi0/0
9
ip add 10.1.1.1 255.255.255.0
10
undo shutdown
11
int gi0/1
12
ip add 10.1.2.1 255.255.255.0
13
undo shutdown
14
int gi6/0
15
ip add 10.1.5.1 255.255.255.0
16
undo shutdown
17
int gi6/1
18
ip add 10.1.6.1 255.255.255.0
19
undo shutdown
20
int lo 0
21
ip add 1.1.1.1 255.255.255.255
22
int lo 1
23
ip add 192.168.10.1 255.255.255.0
24
quit
25

26
2.在AS100系统内部配置OSPF路由协议（IGP协议）。
27
R1：
28
ospf 1 router-id 1.1.1.1
29
area 0.0.0.0
30
network 192.168.10.0 0.0.0.255
31
network 1.1.1.1 0.0.0.0
32
network 10.1.5.0 0.0.0.255
33
network 10.1.6.0 0.0.0.255
34
return
35

36
3.在AS100、AS200、AS300、AS400之间建立EBGP。
37
R1：
38
sys
39
bgp 100
40
router-id 1.1.1.1
41
peer 10.1.1.2 as-number 200
42
peer 10.1.2.2 as-number 300
43
address-family ipv4 unicast
44
network 192.168.10.0 255.255.255.0
45
import-route ospf 1
46
peer 10.1.1.2 enable
47
peer 10.1.2.2 enable
48
peer 10.1.1.2 next-hop-local
49
peer 10.1.2.2 next-hop-local
50
return
51

52
4.在AS100内部建立IBGP。
53
R1：
54
sys
55
bgp 100
56
router-id 1.1.1.1
57
peer 5.5.5.5 as-number 100
58
peer 5.5.5.5 connect-interface LoopBack0
59
peer 6.6.6.6 as-number 100
60
peer 6.6.6.6 connect-interface LoopBack0
61
peer 7.7.7.7 as-number 100
62
peer 7.7.7.7 connect-interface LoopBack0
63
address-family ipv4 unicast
64
network 192.168.10.1 255.255.255.0
65
peer 5.5.5.5 enable
66
peer 5.5.5.5 next-hop-local
67
peer 6.6.6.6 enable
68
peer 6.6.6.6 next-hop-local
69
peer 7.7.7.7 enable
70
peer 7.7.7.7 next-hop-local
71
return
72

73
5.实现各资源网段的互通。
74
R1：
75
sys
76
ospf 1
77
import-route bgp
78
return
79

80
6.要求在AS100内部，通过设置Local preference优先级使R7优选R5学到的BGP路由
81
R1：
82
sys
83
acl basic 2000
84
rule 0 permit source 172.16.1.0 0.0.0.255
85
rule 5 permit source 192.168.20.0 0.0.0.255
86
rule 10 permit source 192.168.30.0 0.0.0.255
87
quit
88

89
acl basic 2001
90
rule 0 permit
91
quit
92

93
route-policy to-R5 permit node 10
94
if-match ip address acl 2000
95
apply local-preference 200
96
quit
97

98
route-policy to-R5 permit node 20
99
if-match ip address acl 2001
100
apply local-preference 100
101
quit
102

103
route-policy to-R6 permit node 10
104
if-match ip address acl 2001
105
apply local-preference 100
106
quit
107

108
route-policy to-R7 permit node 10
109
if-match ip address acl 2001
110
apply local-preference 100
111
quit
112

113
bgp 100
114
address-family ipv4 unicast
115
peer 5.5.5.5 route-policy to-R5 export
116
peer 6.6.6.6 route-policy to-R6 export
117
peer 7.7.7.7 route-policy to-R7 export
118
return
119

120
7.要求通过设置MED值在AS100与AS200、AS300之间、AS400与AS200、AS300之间优选AS300学到的BGP路由
121
R1：
122
sys
123
acl basic 2000
124
rule 0 permit source 172.16.1.0 0.0.0.255
125
quit
126
acl basic 2001
127
rule 0 permit
128
quit
129

130
route-policy as200 permit node 10
131
if-match ip address acl 2000
132
apply cost 30
133
quit
134
route-policy as200 permit node 20
135
if-match ip address acl 2001
136
quit
137

138
route-policy as300 permit node 10
139
if-match ip address acl 2000
140
apply cost 20
141
quit
142
route-policy as300 permit node 20
143
if-match ip address acl 2001
144
quit
145

146
bgp 100
147
router-id 1.1.1.1
148
address-family ipv4 unicast
149
peer 10.1.1.2 route-policy as200 import
150
peer 10.1.2.2 route-policy as300 import
151
peer 10.1.1.2 next-hop-local
152
peer 10.1.2.2 next-hop-local
153
bestroute compare-med
154
quit

1
1.配置设备名称、接口地址。
2
R2:
3
sys
4
sysname R2
5
undo info-center enable
6
user-interface con 0
7
idle-timeout 0 0
8
int gi0/0
9
ip add 10.1.1.2 255.255.255.0
10
undo shutdown
11
int gi0/1
12
ip add 10.1.3.1 255.255.255.0
13
undo shutdown
14
int lo 0
15
ip add 2.2.2.2 255.255.255.255
16
int lo 1
17
ip add 192.168.20.1 255.255.255.0
18
quit
19

20
3.在AS100、AS200、AS300、AS400之间建立EBGP。
21
R2：
22
bgp 200
23
router-id 2.2.2.2
24
peer 10.1.1.1 as-number 100
25
peer 10.1.3.2 as-number 400
26
address-family ipv4 unicast
27
network 192.168.20.0 255.255.255.0
28
import-route direct
29
peer 10.1.1.1 enable
30
peer 10.1.3.2 enable
31
peer 10.1.1.1 next-hop-local
32
peer 10.1.3.2 next-hop-local
33
return

1
1.配置设备名称、接口地址。
2
R3:
3
sys
4
sysname R3
5
undo info-center enable
6
user-interface con 0
7
idle-timeout 0 0
8
int gi0/0
9
ip add 10.1.4.1 255.255.255.0
10
undo shutdown
11
int gi0/1
12
ip add 10.1.2.2 255.255.255.0
13
undo shutdown
14
int lo 0
15
ip add 3.3.3.3 255.255.255.255
16
int lo 1
17
ip add 192.168.30.1 255.255.255.0
18
quit
19

20
3.在AS100、AS200、AS300、AS400之间建立EBGP。
21
R3：
22
bgp 300
23
router-id 3.3.3.3
24
peer 10.1.2.1 as-number 100
25
peer 10.1.4.2 as-number 400
26
address-family ipv4 unicast
27
network 192.168.30.0 255.255.255.0
28
import-route direct
29
peer 10.1.2.1 enable
30
peer 10.1.4.2 enable
31
peer 10.1.2.1 next-hop-local
32
peer 10.1.4.2 next-hop-local
33
return

1
1.配置设备名称、接口地址。
2
R4:
3
sys
4
sysname R4
5
undo info-center enable
6
user-interface con 0
7
idle-timeout 0 0
8
int gi0/0
9
ip add 10.1.4.2 255.255.255.0
10
undo shutdown
11
int gi0/1
12
ip add 10.1.3.2 255.255.255.0
13
undo shutdown
14
int lo 0
15
ip add 4.4.4.4 255.255.255.255
16
int lo 1
17
ip add 172.16.1.1 255.255.255.0
18
quit
19

20
3.在AS100、AS200、AS300、AS400之间建立EBGP。
21
R4：
22
bgp 400
23
router-id 4.4.4.4
24
peer 10.1.3.1 as-number 200
25
peer 10.1.4.1 as-number 300
26
address-family ipv4 unicast
27
network 172.16.1.0 255.255.255.0
28
import-route direct
29
peer 10.1.3.1 enable
30
peer 10.1.4.1 enable
31
peer 10.1.3.1 next-hop-local
32
peer 10.1.4.1 next-hop-local
33
return
34

35
7.要求通过设置MED值在AS100与AS200、AS300之间、AS400与AS200、AS300之间优选AS300学到的BGP路由
36
R4：
37
sys
38
acl basic 2000
39
rule 0 permit source 192.168.10.0 0.0.0.255
40
rule 5 permit source 192.168.1.0 0.0.0.255
41
quit
42
acl basic 2001
43
rule 0 permit
44
quit
45

46
route-policy as200 permit node 10
47
if-match ip address acl 2000
48
apply cost 30
49
quit
50
route-policy as200 permit node 20
51
if-match ip address acl 2001
52
quit
53

54
route-policy as300 permit node 10
55
if-match ip address acl 2000
56
apply cost 20
57
quit
58
route-policy as300 permit node 20
59
if-match ip address acl 2001
60
quit
61

62
bgp 400
63
router-id 4.4.4.4
64
address-family ipv4 unicast
65
peer 10.1.3.1 route-policy as200 import
66
peer 10.1.4.1 route-policy as300 import
67
peer 10.1.3.1 next-hop-local
68
peer 10.1.4.1 next-hop-local
69
bestroute compare-med
70
quit

1
1.配置设备名称、接口地址。
2
R5:
3
sys
4
sysname R5
5
undo info-center enable
6
user-interface con 0
7
idle-timeout 0 0
8
int gi0/0
9
ip add 10.1.8.1 255.255.255.0
10
undo shutdown
11
int gi0/1
12
ip add 10.1.6.2 255.255.255.0
13
undo shutdown
14
int lo 0
15
ip add 5.5.5.5 255.255.255.255
16
quit
17

18
2.在AS100系统内部配置OSPF路由协议（IGP协议）。
19
R5：
20
ospf 1 router-id 5.5.5.5
21
area 0.0.0.0
22
network 5.5.5.5 0.0.0.0
23
network 10.1.8.0 0.0.0.255
24
network 10.1.6.0 0.0.0.255
25
return
26

27
4.在AS100内部建立IBGP。
28
R5：
29
sys
30
bgp 100
31
router-id 5.5.5.5
32
peer 1.1.1.1 as-number 100
33
peer 1.1.1.1 connect-interface LoopBack0
34
address-family ipv4 unicast
35
peer 1.1.1.1 enable
36
peer 1.1.1.1 next-hop-local
37
return
38

39
5.实现各资源网段的互通。
40
R5：
41
sys
42
ospf 1
43
import-route bgp
44
return

1
1.配置设备名称、接口地址。
2
R6:
3
sys
4
sysname R6
5
undo info-center enable
6
user-interface con 0
7
idle-timeout 0 0
8
int gi0/0
9
ip add 10.1.7.1 255.255.255.0
10
undo shutdown
11
int gi0/1
12
ip add 10.1.5.2 255.255.255.0
13
undo shutdown
14
int lo 0
15
ip add 6.6.6.6 255.255.255.255
16
quit
17

18
2.在AS100系统内部配置OSPF路由协议（IGP协议）。
19
R6：
20
ospf 1 router-id 6.6.6.6
21
area 0.0.0.0
22
network 6.6.6.6 0.0.0.0
23
network 10.1.5.0 0.0.0.255
24
network 10.1.7.0 0.0.0.255
25
return
26

27
4.在AS100内部建立IBGP。
28
R6：
29
sys
30
bgp 100
31
router-id 6.6.6.6
32
peer 1.1.1.1 as-number 100
33
peer 1.1.1.1 connect-interface LoopBack0
34
address-family ipv4 unicast
35
peer 1.1.1.1 enable
36
peer 1.1.1.1 next-hop-local
37
return
38

39
5.实现各资源网段的互通。
40
R6：
41
sys
42
ospf 1
43
import-route bgp
44
return

1
1.配置设备名称、接口地址。
2
R7:
3
sys
4
sysname R7
5
undo info-center enable
6
user-interface con 0
7
idle-timeout 0 0
8
int gi0/0
9
ip add 10.1.7.2 255.255.255.0
10
undo shutdown
11
int gi0/1
12
ip add 10.1.8.2 255.255.255.0
13
undo shutdown
14
int lo 0
15
ip add 7.7.7.7 255.255.255.255
16
int lo 1
17
ip add 192.168.1.1 255.255.255.0
18
quit
19

20
2.在AS100系统内部配置OSPF路由协议（IGP协议）。
21
R7：
22
ospf 1 router-id 7.7.7.7
23
area 0.0.0.0
24
network 7.7.7.7 0.0.0.0
25
network 10.1.7.0 0.0.0.255
26
network 10.1.8.0 0.0.0.255
27
network 192.168.1.0 0.0.0.255
28
return
29

30
4.在AS100内部建立IBGP。
31
R7：
32
sys
33
bgp 100
34
router-id 7.7.7.7
35
peer 1.1.1.1 as-number 100
36
peer 1.1.1.1 connect-interface LoopBack0
37
address-family ipv4 unicast
38
network 192.168.1.1 255.255.255.0
39
peer 1.1.1.1 enable
40
peer 1.1.1.1 next-hop-local
41
return
42

43
5.实现各资源网段的互通。
44
R7：
45
sys
46
ospf 1
47
import-route bgp
48
return