OSPF外部路由引入
实验目的：
除了内部通信外，企业还需要与外部网络进行通信，不同企业网络之间存在互访需求。
假设A公司网络部署OSPF协议实现内部通信，因业务发展，需要访问B公司的一台WEB服务器。
网络拓扑图：
公司A：
R1
<Huawei>sy
[R1]sysname R1
[R1]in g0/0/1
[R1-GigabitEthernet0/0/1]ip add 10.0.12.1 24
[R1-GigabitEthernet0/0/1]in g0/0/2
[R1-GigabitEthernet0/0/2]ip add 10.0.13.1 24
[R1-GigabitEthernet0/0/2]in g0/0/0
[R1-GigabitEthernet0/0/0]ip add 10.0.15.1 24
[R1-GigabitEthernet0/0/2]q
[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]network 10.0.12.1 0.0.0.0
[R1-ospf-1-area-0.0.0.0]network 10.0.13.1 0.0.0.0
[R1-ospf-1-area-0.0.0.0]q
[R1-ospf-1]q
[R1]dis ospf lsdbOSPF Process 1 with Router ID 1.1.1.1Link State Database Area: 0.0.0.0Type LinkState ID AdvRouter Age Len Sequence MetricRouter 1.1.1.1 1.1.1.1 8 48 80000002 1[R1]R2
<Huawei>sy
Enter system view, return user view with Ctrl+Z.
[Huawei]sy R2
[R2]in g0/0/0
[R2-GigabitEthernet0/0/0]ip add 10.0.12.2 24
[R2-GigabitEthernet0/0/0]in g0/0/1
[R2-GigabitEthernet0/0/1]ip add 10.0.23.2 24
[R2-GigabitEthernet0/0/2]ip add 10.0.24.2 24
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 10.0.12.2 0.0.0.0
[R2-ospf-1-area-0.0.0.0]network 10.0.23.2 0.0.0.0
[R2-ospf-1-area-0.0.0.0]q
[R2-ospf-1]area 1
[R2-ospf-1-area-0.0.0.1]network 10.0.24.2 0.0.0.0
[R2-ospf-1]q
[R2]dis ospf lsdbOSPF Process 1 with Router ID 2.2.2.2Link State Database Area: 0.0.0.0Type LinkState ID AdvRouter Age Len Sequence MetricRouter 2.2.2.2 2.2.2.2 43 48 80000009 1Router 1.1.1.1 1.1.1.1 282 48 8000000A 1Router 3.3.3.3 3.3.3.3 277 48 80000006 1Network 10.0.23.2 2.2.2.2 270 32 80000002 0Network 10.0.13.1 1.1.1.1 282 32 80000002 0Network 10.0.12.1 1.1.1.1 619 32 80000002 0Sum-Net 10.0.24.0 2.2.2.2 14 28 80000001 1Area: 0.0.0.1Type LinkState ID AdvRouter Age Len Sequence MetricRouter 2.2.2.2 2.2.2.2 14 36 80000001 1Sum-Net 10.0.13.0 2.2.2.2 14 28 80000001 2Sum-Net 10.0.12.0 2.2.2.2 14 28 80000001 1Sum-Net 10.0.23.0 2.2.2.2 14 28 80000001 1[R2]R3
<Huawei>sy
Enter system view, return user view with Ctrl+Z.
[Huawei]sy R3
[R3]in g0/0/0
[R3-GigabitEthernet0/0/0]ip add 10.0.13.3 24
[R3-GigabitEthernet0/0/0]in g0/0/1
[R3-GigabitEthernet0/0/1]ip add 10.0.23.3 24
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 10.0.13.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]network 10.0.23.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]q
[R3-ospf-1]q
[R3]dis ospf lsdb OSPF Process 1 with Router ID 3.3.3.3Link State Database Area: 0.0.0.0Type LinkState ID AdvRouter Age Len Sequence MetricRouter 2.2.2.2 2.2.2.2 3 48 80000008 1Router 1.1.1.1 1.1.1.1 12 48 8000000A 1Router 3.3.3.3 3.3.3.3 7 48 80000006 1Network 10.0.23.2 2.2.2.2 3 32 80000002 0Network 10.0.13.1 1.1.1.1 12 32 80000002 0Network 10.0.12.1 1.1.1.1 350 32 80000002 0[R3]R4
<Huawei>sy
[Huawei]sy R4
[R4]in g0/0/0
[R4-GigabitEthernet0/0/0]ip add 10.0.24.4 24
[R4-GigabitEthernet0/0/0]in g0/0/1
[R4-GigabitEthernet0/0/1]ip add 172.16.0.1 24
[R4-GigabitEthernet0/0/1]q
[R4]ospf 1 router-id 4.4.4.4
[R4-ospf-1]area 1
[R4-ospf-1-area-0.0.0.1]network 172.16.0.1 0.0.0.0
[R4-ospf-1-area-0.0.0.1]network 10.0.24.4 0.0.0.0
[R4-ospf-1-area-0.0.0.1]q
[R4-ospf-1]q
[R4]dis ospf lsdb OSPF Process 1 with Router ID 4.4.4.4Link State Database Area: 0.0.0.1Type LinkState ID AdvRouter Age Len Sequence MetricRouter 4.4.4.4 4.4.4.4 217 36 80000003 1Router 2.2.2.2 2.2.2.2 217 36 80000005 1Network 10.0.24.2 2.2.2.2 217 32 80000002 0Sum-Net 10.0.13.0 2.2.2.2 398 28 80000001 2Sum-Net 10.0.12.0 2.2.2.2 398 28 80000001 1Sum-Net 10.0.23.0 2.2.2.2 398 28 80000001 1[R4]
PC2
测试连通性：
公司B
R5
<Huawei>sy
Enter system view, return user view with Ctrl+Z.
[Huawei]sy R5
[R5]in g0/0/0
[R5-GigabitEthernet0/0/0]ip add 10.0.15.5 24
[R5-GigabitEthernet0/0/0]in g0/0/1
[R5-GigabitEthernet0/0/1]ip add 10.0.56.5 24
[R5-GigabitEthernet0/0/1]q
[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]area 0
[R5-ospf-1-area-0.0.0.0]network 10.0.56.5 0.0.0.0
[R5-ospf-1-area-0.0.0.0]q
[R5-ospf-1]q
[R5]dis ospf lsdb OSPF Process 1 with Router ID 5.5.5.5Link State Database Area: 0.0.0.0Type LinkState ID AdvRouter Age Len Sequence MetricRouter 5.5.5.5 5.5.5.5 5 36 80000001 1[R5]R6
<Huawei>sy
Enter system view, return user view with Ctrl+Z.
[Huawei]sy R6
[R6]in g0/0/0
[R6-GigabitEthernet0/0/0]ip add 10.0.56.6 24
[R6-GigabitEthernet0/0/0]in g0/0/01
[R6-GigabitEthernet0/0/1]ip add 192.168.1.1 24
[R6-GigabitEthernet0/0/1]q
[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]area 0
[R6-ospf-1-area-0.0.0.0]netw
[R6-ospf-1-area-0.0.0.0]network 10.0.56.6 0.0.0.0
[R6-ospf-1-area-0.0.0.0]network 192.168.1.1 0.0.0.0
[R6-ospf-1-area-0.0.0.0]q
[R6-ospf-1]q
[R6]dis ospf lsdb OSPF Process 1 with Router ID 6.6.6.6Link State Database Area: 0.0.0.0Type LinkState ID AdvRouter Age Len Sequence MetricRouter 6.6.6.6 6.6.6.6 6 48 80000004 1Router 5.5.5.5 5.5.5.5 9 36 80000005 1Network 10.0.56.5 5.5.5.5 9 32 80000002 0[R6]PC1
测试连通性：
在R1 上引入外部路由：
[R1]ip route-static 192.168.1.0 255.255.255.0 10.0.15.5
[R1]ospf 1
[R1-ospf-1]import-route static [R1]dis ospf lsdb OSPF Process 1 with Router ID 1.1.1.1Link State Database Area: 0.0.0.0Type LinkState ID AdvRouter Age Len Sequence MetricRouter 2.2.2.2 2.2.2.2 616 48 8000000A 1Router 1.1.1.1 1.1.1.1 172 48 8000000C 1Router 3.3.3.3 3.3.3.3 849 48 80000007 1Network 10.0.23.2 2.2.2.2 842 32 80000003 0Network 10.0.13.1 1.1.1.1 852 32 80000003 0Network 10.0.12.1 1.1.1.1 1189 32 80000003 0Sum-Net 10.0.24.0 2.2.2.2 586 28 80000002 1Sum-Net 172.16.0.0 2.2.2.2 461 28 80000001 2AS External DatabaseType LinkState ID AdvRouter Age Len Sequence MetricExternal 192.168.1.0 1.1.1.1 8 36 80000001 1[R1]
在R5 上引入外部路由：
[R5]ip route-static 172.16.0.0 255.255.255.0 10.0.15.1
[R5]ospf 1
[R5-ospf-1]import-route static
[R5-ospf-1]q
[R5]dis ospf lsdb OSPF Process 1 with Router ID 5.5.5.5Link State Database Area: 0.0.0.0Type LinkState ID AdvRouter Age Len Sequence MetricRouter 6.6.6.6 6.6.6.6 1695 48 80000005 1Router 5.5.5.5 5.5.5.5 6 36 80000006 1Network 10.0.56.5 5.5.5.5 1733 32 80000002 0AS External DatabaseType LinkState ID AdvRouter Age Len Sequence MetricExternal 172.16.0.0 5.5.5.5
测试连通性：
[R1]dis ospf lsdb ase OSPF Process 1 with Router ID 1.1.1.1Link State DatabaseType : External //LSA类型Ls id : 192.168.1.0 //目的网段地址Adv rtr : 1.1.1.1 //产生此五类LSA ASBR的Router IDLs age : 604 Len : 36 Options : E seq# : 80000001 chksum : 0x243eNet mask : 255.255.255.0 //网络掩码TOS 0 Metric: 1 //开销值E type : 2Forwarding Address : 0.0.0.0 Tag : 1 Priority : Low[R1]
[R5]dis ospf lsdb ase 172.16.0.0OSPF Process 1 with Router ID 5.5.5.5Link State DatabaseType : ExternalLs id : 172.16.0.0Adv rtr : 5.5.5.5 Ls age : 439 Len : 36 Options : E seq# : 80000001 chksum : 0xe21dNet mask : 255.255.255.0 TOS 0 Metric: 1 E type : 2Forwarding Address : 0.0.0.0 Tag : 1 Priority : Low[R5]
[R2]display ospf lsdb asbr self-originate OSPF Process 1 with Router ID 2.2.2.2Area: 0.0.0.0Link State Database Area: 0.0.0.1Link State Database Type : Sum-Asbr //LSA类型Ls id : 1.1.1.1 //ASBR的Router IDAdv rtr : 2.2.2.2 //产生此四类LSA ABR的Router IDLs age : 116 Len : 28 Options : E seq# : 80000002 chksum : 0xfa53Tos 0 metric: 1 //从RTB到达此ASBR的开销[R2]测试 HTTP FTP：
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