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CCIE OSPF综合实验

11-07-26        来源:[db:作者]  
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实验需求:
1:配置帧中继交换机PVC链路;
2:配置area0区域,指定合适DR,要求自动形成邻接关系;
3:使用虚链路解决区域分隔问题;
4:配置路由总结减少路由表条目;
5:采用合适的特殊区域减少LSA泛洪;
6:保证所有路由器可以ping通任意接口。
我们查看一些路由器的配置以及其路由表(为减少空间,路由表上的注释已去掉):
FRSW#show running-config
interface Serial1/0
 no ip address
 encapsulation frame-relay
 serial restart-delay 0
 clock rate 64000
 frame-relay lmi-type cisco
 frame-relay intf-type dce
 frame-relay route 203 interface Serial1/1 302
 frame-relay route 204 interface Serial1/2 402
R1#show running-config
router ospf 110
 router-id 11.11.11.11
 log-adjacency-changes
 area 1 stub
 network 11.11.11.0 0.0.0.255 area 1
 network 0.0.0.0 255.255.255.255 area 1
R1#show ip route
Gateway of last resort is 12.1.1.2 to network 0.0.0.0
     1.0.0.0/24 is subnetted, 4 subnets
C       1.1.1.0 is directly connected, Loopback10
C       1.1.2.0 is directly connected, Loopback11
C       1.1.3.0 is directly connected, Loopback12
C       1.1.4.0 is directly connected, Loopback13
     11.0.0.0/24 is subnetted, 1 subnets
C       11.11.11.0 is directly connected, Loopback100
     12.0.0.0/24 is subnetted, 1 subnets
C       12.1.1.0 is directly connected, Serial1/1
O*IA 0.0.0.0/0 [110/65] via 12.1.1.2, 00:25:19, Serial1/1
R2#show ip route
     34.0.0.0/24 is subnetted, 1 subnets
C       34.1.1.0 is directly connected, Serial1/2
     1.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
O       1.1.0.0/16 is a summary, 00:26:40, Null0
O       1.1.1.1/32 [110/65] via 12.1.1.1, 00:26:40, Serial1/0
O       1.1.3.1/32 [110/65] via 12.1.1.1, 00:26:40, Serial1/0
O       1.1.2.1/32 [110/65] via 12.1.1.1, 00:26:40, Serial1/0
O       1.1.4.1/32 [110/65] via 12.1.1.1, 00:26:40, Serial1/0
     35.0.0.0/24 is subnetted, 1 subnets
O IA    35.1.1.0 [110/128] via 34.1.1.3, 00:06:22, Serial1/2
     2.0.0.0/24 is subnetted, 2 subnets
C       2.2.2.0 is directly connected, Loopback10
C       2.2.3.0 is directly connected, Loopback11
     3.0.0.0/32 is subnetted, 1 subnets
O       3.3.3.3 [110/65] via 34.1.1.3, 00:06:23, Serial1/2
     4.0.0.0/32 is subnetted, 1 subnets
O       4.4.4.4 [110/65] via 34.1.1.4, 00:06:23, Serial1/2
     5.0.0.0/32 is subnetted, 1 subnets
O IA    5.5.5.5 [110/129] via 34.1.1.3, 00:06:23, Serial1/2
     7.0.0.0/32 is subnetted, 1 subnets
O IA    7.7.7.7 [110/129] via 34.1.1.4, 00:06:23, Serial1/2
     8.0.0.0/32 is subnetted, 2 subnets
O IA    8.8.8.8 [110/193] via 34.1.1.4, 00:05:25, Serial1/2
O IA    8.8.88.8 [110/193] via 34.1.1.4, 00:05:25, Serial1/2
     78.0.0.0/24 is subnetted, 1 subnets
O IA    78.1.1.0 [110/192] via 34.1.1.4, 00:06:23, Serial1/2
     56.0.0.0/24 is subnetted, 1 subnets
O E2    56.1.1.0 [110/20] via 34.1.1.3, 00:06:23, Serial1/2
     11.0.0.0/32 is subnetted, 1 subnets
O       11.11.11.11 [110/65] via 12.1.1.1, 00:26:41, Serial1/0
     12.0.0.0/24 is subnetted, 1 subnets
C       12.1.1.0 is directly connected, Serial1/0
     47.0.0.0/24 is subnetted, 1 subnets
O IA    47.1.1.0 [110/128] via 34.1.1.4, 00:06:23, Serial1/2
可以看到R2的路由表仍然是个庞然大物。
R3#show running-config
router ospf 110
 router-id 33.33.33.33
 log-adjacency-changes
 area 4 nssa no-redistribution no-summary
 network 3.3.3.0 0.0.0.255 area 0
 network 34.1.1.0 0.0.0.255 area 0
 network 35.1.1.0 0.0.0.255 area 4
R4#show running-config
router ospf 110
 router-id 44.44.44.44
 log-adjacency-changes
 area 2 virtual-link 77.77.77.77
 network 4.4.4.0 0.0.0.255 area 0
 network 34.1.1.0 0.0.0.255 area 0
 network 47.1.1.0 0.0.0.255 area 2
R5#show running-config
router ospf 110
 router-id 55.55.55.55
 log-adjacency-changes
 area 4 nssa
 redistribute rip subnets
 network 5.5.5.0 0.0.0.255 area 4
 network 35.1.1.0 0.0.0.255 area 4
router rip
 version 2
 redistribute ospf 110 metric 1
 network 56.0.0.0
 no auto-summary
R5#show ip route
Gateway of last resort is 35.1.1.3 to network 0.0.0.0
     35.0.0.0/24 is subnetted, 1 subnets
C       35.1.1.0 is directly connected, Serial1/0
     5.0.0.0/24 is subnetted, 1 subnets
C       5.5.5.0 is directly connected, Loopback10
     6.0.0.0/24 is subnetted, 3 subnets
R       6.6.6.0 [120/1] via 56.1.1.6, 00:00:18, Serial1/1
R       6.6.7.0 [120/1] via 56.1.1.6, 00:00:18, Serial1/1
R       6.6.8.0 [120/1] via 56.1.1.6, 00:00:18, Serial1/1
     56.0.0.0/24 is subnetted, 1 subnets
C       56.1.1.0 is directly connected, Serial1/1
O*IA 0.0.0.0/0 [110/65] via 35.1.1.3, 00:25:59, Serial1/0
由于做了特殊区域,R5的路由表相当整洁。
R6#show running-config
router rip
 version 2
 network 6.0.0.0
 network 56.0.0.0
 no auto-summary
R6# sh ip route
Gateway of last resort is 56.1.1.5 to network 0.0.0.0
     35.0.0.0/24 is subnetted, 1 subnets
R       35.1.1.0 [120/1] via 56.1.1.5, 00:00:15, Serial1/0
     5.0.0.0/24 is subnetted, 1 subnets
R       5.5.5.0 [120/1] via 56.1.1.5, 00:00:15, Serial1/0
     6.0.0.0/24 is subnetted, 3 subnets
C       6.6.6.0 is directly connected, Loopback10
C       6.6.7.0 is directly connected, Loopback11
C       6.6.8.0 is directly connected, Loopback12
     56.0.0.0/24 is subnetted, 1 subnets
C       56.1.1.0 is directly connected, Serial1/0
R*   0.0.0.0/0 [120/1] via 56.1.1.5, 00:00:15, Serial1/0
R6的路由表由于下放了默认路由同样整洁。
R7#show running-config | b r o
router ospf 110
 router-id 77.77.77.77
 log-adjacency-changes
 area 2 virtual-link 44.44.44.44
 area 3 stub no-summary
 network 7.7.7.0 0.0.0.255 area 2
 network 47.1.1.0 0.0.0.255 area 2
 network 78.1.1.0 0.0.0.255 area 3
R8#show running-config | b r o
router ospf 110
 router-id 88.88.88.88
 log-adjacency-changes
 area 3 stub
 network 8.8.0.0 0.0.255.255 area 3
 network 78.1.1.0 0.0.0.255 area 3
R8#show ip route
Gateway of last resort is 78.1.1.7 to network 0.0.0.0
     8.0.0.0/24 is subnetted, 2 subnets
C       8.8.8.0 is directly connected, Loopback10
C       8.8.88.0 is directly connected, Loopback11
     78.0.0.0/24 is subnetted, 1 subnets
C       78.1.1.0 is directly connected, Serial1/0
O*IA 0.0.0.0/0 [110/65] via 78.1.1.7, 00:15:31, Serial1/0
R8由于是末节区域,做个stub可以看到路由表非常整洁。
做下测试:
R8#ping 11.11.11.11 source 8.8.88.8
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 11.11.11.11, timeout is 2 seconds:
Packet sent with a source address of 8.8.88.8
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 44/70/88 ms
R8#ping 6.6.6.6 source 8.8.88.8
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 6.6.6.6, timeout is 2 seconds:
Packet sent with a source address of 8.8.88.8
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 68/91/116 ms
实验完成。
本文出自 “没兴趣” 博客

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