H3CSE路由实验配置
1.OSPF单区域配置：
从模拟器当中打开RT2和RT3两台路由器，按照如图所示配置接口IP地址，配置单区域的OSPF。
首先在RT2上进行配置：
[H3C]sysname RT2
[RT2]interface Serial 0/2/2
[RT2-Serial0/2/2]ip address 10.1.1.1 24
[RT2-Serial0/2/2]quit
[RT2]interface LoopBack 1
[RT2-LoopBack1]ip address 2.2.2.2 32
[RT2-LoopBack1]quit
[RT2]ospf router-id 2.2.2.2
[RT2-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
[RT2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
[RT2-ospf-1-area-0.0.0.0]quit
[RT2-ospf-1]quit
[RT2]
在RT3上的配置：
[H3C]sysname RT3
[RT3]interface LoopBack 1
[RT3-LoopBack1]ip address 3.3.3.3 32
[RT3-LoopBack1]quit
[RT3]interface Serial 0/2/0
[RT3-Serial0/2/0]ip address 10.1.1.2 24
[RT3-Serial0/2/0]quit
[RT3]ospf router-id 3.3.3.3
[RT3-ospf-1]area 0
[RT3-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
[RT3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
[RT3-ospf-1-area-0.0.0.0]quit
[RT3-ospf-1]quit
[RT3]
配置好之后在RT2上ping RT3发现可以ping通，那么实验配置就是正确的了。
[RT2]ping -a 2.2.2.2 3.3.3.3
PING 3.3.3.3: 56 data bytes, press CTRL_C to break
Reply from 3.3.3.3: bytes=56 Sequence=1 ttl=255 time=24 ms
Reply from 3.3.3.3: bytes=56 Sequence=2 ttl=255 time=14 ms
Reply from 3.3.3.3: bytes=56 Sequence=3 ttl=255 time=25 ms
Reply from 3.3.3.3: bytes=56 Sequence=5 ttl=255 time=10 ms
--- 3.3.3.3 ping statistics ---
5 packet(s) transmitted
4 packet(s) received
20.00% packet loss
round-trip min/avg/max = 10/18/25 ms
使用查看OSPF邻居状态的命令
[RT2]display ospf peer
OSPF Process 1 with Router ID 2.2.2.2
Neighbor Brief Information
Area: 0.0.0.0
Router ID Address Pri Dead-Time Interface State
3.3.3.3 10.1.1.2 1 36 S0/2/2 Full/ -
发现对端邻居3.3.3.3的状态已经是full状态了。
2.OSPF多区域实验：
打开模拟器的RT2、RT3和RT4，其中RT2和RT3在区域0，RT3和
RT4在区域1，配置多区域的OSPF。
[H3C]sysname RT2
[RT2]interface Serial 0/2/2
[RT2-Serial0/2/2]ip address 10.1.1.1 24
[RT2-Serial0/2/2]quit
[RT2]interface LoopBack 1
[RT2-LoopBack1]ip address 2.2.2.2 32
[RT2-LoopBack1]quit
[RT2]ospf router-id 2.2.2.2
[RT2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0 [RT2-ospf-1-area-0.0.0.0]quit
[RT2-ospf-1]quit
[RT2]
在RT3上的配置：
[H3C]sysname RT3
[RT3]interface LoopBack 1
[RT3-LoopBack1]ip address 3.3.3.3 32
[RT3-LoopBack1]quit
[RT3]interface Serial 0/2/0
[RT3-Serial0/2/0]ip address 10.1.1.2 24
[RT3-Serial0/2/0]quit
[RT3]interface Serial 0/2/2
[RT3-Serial0/2/2]ip address 20.1.1.1 24
[RT3-Serial0/2/2]quit
[RT3]ospf router-id 3.3.3.3
[RT3-ospf-1]area 0
[RT3-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255 [RT3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0 [RT3-ospf-1-area-0.0.0.0]quit
[RT3-ospf-1]area 1
[RT3-ospf-1-area-0.0.0.1]quit
[RT3-ospf-1]quit
[RT3]
在RT4上的配置：
[H3C]sysname RT4
[RT4]interface LoopBack 1
[RT4-LoopBack1]ip address 4.4.4.4 32
[RT4-LoopBack1]quit
[RT4]interface Serial 0/2/0
[RT4-Serial0/2/0]ip address 20.1.1.2 24
[RT4]ospf router-id 4.4.4.4
[RT4-ospf-1]area 1
[RT4-ospf-1-area-0.0.0.1]network 20.1.1.0 0.0.0.255
[RT4-ospf-1-area-0.0.0.1]network 4.4.4.4 0.0.0.0
[RT4-ospf-1-area-0.0.0.1]quit
[RT4-ospf-1]quit
[RT4]
配置好之后在RT2上分别ping RT3和RT4的loopback接口ip地址，看是否可以ping通。
[RT2]ping -a 2.2.2.2 4.4.4.4
PING 4.4.4.4: 56 data bytes, press CTRL_C to break
Request time out
Reply from 4.4.4.4: bytes=56 Sequence=2 ttl=254 time=4 ms Reply from 4.4.4.4: bytes=56 Sequence=3 ttl=254 time=1 ms Reply from 4.4.4.4: bytes=56 Sequence=4 ttl=254 time=10 ms Reply from 4.4.4.4: bytes=56 Sequence=5 ttl=254 time=16 ms
--- 4.4.4.4 ping statistics ---
5 packet(s) transmitted
4 packet(s) received
20.00% packet loss
round-trip min/avg/max = 1/7/16 ms
[RT2]ping -a 2.2.2.2 3.3.3.3
PING 3.3.3.3: 56 data bytes, press CTRL_C to break
Reply from 3.3.3.3: bytes=56 Sequence=1 ttl=255 time=20 ms
Reply from 3.3.3.3: bytes=56 Sequence=2 ttl=255 time=30 ms
Request time out
Reply from 3.3.3.3: bytes=56 Sequence=4 ttl=255 time=10 ms
Reply from 3.3.3.3: bytes=56 Sequence=5 ttl=255 time=5 ms
--- 3.3.3.3 ping statistics ---
5 packet(s) transmitted
4 packet(s) received
20.00% packet loss
round-trip min/avg/max = 5/16/30 ms
在RT3上查看OSPF的邻居：
[RT3]display ospf peer
OSPF Process 1 with Router ID 3.3.3.3
Neighbor Brief Information
Area: 0.0.0.0
Router ID Address Pri Dead-Time Interface State
2.2.2.2 10.1.1.1 1 39 S0/2/0 Full/ -
Area: 0.0.0.1
Router ID Address Pri Dead-Time Interface State
4.4.4.4 20.1.1.2 1 38 S0/2/2
Full/ -
发现两个对端邻居都是full的状态，那么配置就成功了。
3.OSPF虚链接的配置：
如图所示，RT2和RT3在区域0，RT3和RT4在区域1,RT4和RT5在区域2当中，这是发现区域2没有和区域0互连，通过我们学到的理论，区域1和区域2不能通信，这样相互之间不能进行网段的学习。通过在区域1配置虚链接，保证通信。
[H3C]sysname RT2
[RT2]interface Serial 0/2/2
[RT2-Serial0/2/2]ip address 10.1.1.1 24
[RT2-Serial0/2/2]quit
[RT2]interface LoopBack 1
[RT2-LoopBack1]ip address 2.2.2.2 32
[RT2-LoopBack1]quit
[RT2]ospf router-id 2.2.2.2
[RT2-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255
[RT2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
[RT2-ospf-1-area-0.0.0.0]quit
[RT2-ospf-1]quit
[RT2]
在RT3上的配置：
[H3C]sysname RT3
[RT3]interface LoopBack 1
[RT3-LoopBack1]ip address 3.3.3.3 32
[RT3-LoopBack1]quit
[RT3]interface Serial 0/2/0
[RT3-Serial0/2/0]ip address 10.1.1.2 24
[RT3-Serial0/2/0]quit
[RT3]interface Serial 0/2/2
[RT3-Serial0/2/2]ip address 20.1.1.1 24
[RT3-Serial0/2/2]quit
[RT3]ospf router-id 3.3.3.3
[RT3-ospf-1]area 0
[RT3-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255 [RT3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0 [RT3-ospf-1-area-0.0.0.0]quit
[RT3-ospf-1]area 1
[RT3-ospf-1-area-0.0.0.1]network 20.1.1.0 0.0.0.255 [RT3-ospf-1-area-0.0.0.1]quit
[RT3-ospf-1]quit
[RT3]
在RT4上的配置：
[H3C]sysname RT4
[RT4]interface LoopBack 1
[RT4-LoopBack1]ip address 4.4.4.4 32
[RT4-LoopBack1]quit
[RT4]interface Serial 0/2/0
[RT4-Serial0/2/0]ip address 20.1.1.2 24
[RT4-Serial0/2/2]ip address 30.1.1.1 24
[RT4]ospf router-id 4.4.4.4
[RT4-ospf-1]area 1
[RT4-ospf-1-area-0.0.0.1]network 20.1.1.0 0.0.0.255 [RT4-ospf-1-area-0.0.0.1]network 4.4.4.4 0.0.0.0 [RT4-ospf-1-area-0.0.0.1]quit
[RT4-ospf-1]area 2
[RT4-ospf-1-area-0.0.0.2]network 30.1.1.0 0.0.0.255 [RT4-ospf-1]quit
[RT4]
RT5上的配置：
[H3C]sysname RT5
[RT5]interface LoopBack 1
[RT5-LoopBack1]ip address 5.5.5.5 32
[RT5-LoopBack1]quit
[RT5]interface Serial 0/2/2
[RT5-Serial0/2/2]ip address 30.1.1.2 24
[RT5]ospf router-id 5.5.5.5
[RT5-ospf-1]area 2
[RT5-ospf-1-area-0.0.0.2]network 30.1.1.0 0.0.0.255
[RT5-ospf-1-area-0.0.0.2]network 5.5.5.5 0.0.0.0
[RT5-ospf-1-area-0.0.0.2]quit
[RT5-ospf-1]quit
[RT5]
配置好了之后查看RT5的路由表会发现只有直连路由：
[RT5]display ip routing-table
Routing Tables: Public
Destinations : 6 Routes : 6
Destination/Mask Proto Pre Cost NextHop Interface
5.5.5.5/32 Direct 0 0 127.0.0.1 InLoop0
30.1.1.0/24 Direct 0 0 30.1.1.2 S0/2/2
30.1.1.1/32 Direct 0 0 30.1.1.1 S0/2/2
30.1.1.2/32 Direct 0 0 127.0.0.1 InLoop0
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
这时分别在RT3和RT4上配置虚链接：
[RT3]ospf
[RT3-ospf-1]area 1
[RT3-ospf-1-area-0.0.0.1]vlink-peer 4.4.4.4
[RT4]ospf
[RT4-ospf-1]area 1
[RT4-ospf-1-area-0.0.0.1]vlink-peer 3.3.3.3
配置好了之后再从RT5上查看路由表：
[RT5]display ip routing-table
Routing Tables: Public
Destinations : 11 Routes : 11
Destination/Mask Proto Pre Cost NextHop Interface
2.2.2.2/32 OSPF 10 4686 30.1.1.1 S0/2/2
3.3.3.3/32 OSPF 10 3124 30.1.1.1 S0/2/2
4.4.4.4/32 OSPF 10 1562 30.1.1.1 S0/2/2
5.5.5.5/32 Direct 0 0 127.0.0.1 InLoop0
10.1.1.0/24 OSPF 10 4686 30.1.1.1 S0/2/2
20.1.1.0/24 OSPF 10 3124 30.1.1.1 S0/2/2
30.1.1.0/24 Direct 0 0 30.1.1.2 S0/2/2
30.1.1.1/32 Direct 0 0 30.1.1.1 S0/2/2
30.1.1.2/32 Direct 0 0 127.0.0.1 InLoop0
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1
InLoop0
会发现路由已经正确学习到，说明虚链接生效了。
4.OSPF路由聚合：
OSPF的路由聚合分为两种，一个是3类LSA的聚合，还有一个五类LSA的聚合。
3类LSA的聚合配置：
RT2的配置如下：
[H3C]sysname RT2
[RT2]interface Serial 0/2/2
[RT2-Serial0/2/2]ip address 10.1.1.1 24
[RT2-Serial0/2/2]quit
[RT2]interface LoopBack 1
[RT2-LoopBack1]ip address 2.2.2.2 32
[RT2-LoopBack1]quit
[RT2]interface LoopBack 2
[RT2-LoopBack2]ip address 192.168.0.1 32
[RT2-LoopBack2]quit
[RT2]interface LoopBack 3
[RT2-LoopBack3]ip address 192.168.1.1 32
[RT2-LoopBack3]quit
[RT2]ospf router-id 2.2.2.2
[RT2-ospf-1]area 0
[RT2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0 [RT2-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255 [RT2-ospf-1-area-0.0.0.0]network 192.168.0.1 0.0.0.0 [RT2-ospf-1-area-0.0.0.0]network 192.168.1.1 0.0.0.0 [RT2-ospf-1-area-0.0.0.0]quit
[RT2-ospf-1]quit
[RT2]
RT3的配置如下：
[H3C]sysname RT3
[RT3]interface Serial 0/2/0
[RT3-Serial0/2/0]ip address 10.1.1.2 24
[RT3-Serial0/2/0]quit
[RT3]interface LoopBack 1
[RT3-LoopBack1]ip address 3.3.3.3 32
[RT3-LoopBack1]quit
[RT3]interface Serial 0/2/2
[RT3-Serial0/2/2]ip address 20.1.1.1 24
[RT3-Serial0/2/2]quit
[RT3]ospf router-id 3.3.3.3
[RT3-ospf-1]area 0
[RT3-ospf-1-area-0.0.0.0]network 10.1.1.0 0.0.0.255 [RT3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
[RT3-ospf-1-area-0.0.0.0]quit
[RT3-ospf-1]area 1
[RT3-ospf-1-area-0.0.0.1]network 20.1.1.0 0.0.0.255 [RT3-ospf-1-area-0.0.0.1]quit
RT4的配置如下：
[H3C]sysname R4
[R4]interface Serial 0/2/0
[R4-Serial0/2/0]ip address 20.1.1.2 24
[R4-Serial0/2/0]quit
[R4]interface LoopBack 1
[R4-LoopBack1]ip address 4.4.4.4 32
[R4-LoopBack1]quit
[R4]ospf router-id 4.4.4.4
[R4-ospf-1]area 1
[R4-ospf-1-area-0.0.0.1]network 20.1.1.0 0.0.0.255 [R4-ospf-1-area-0.0.0.1]network 4.4.4.4 0.0.0.0
[R4-ospf-1-area-0.0.0.1]quit
[R4-ospf-1]quit
在RT3上配置3类LSA的聚合：
[RT3]ospf
[RT3-ospf-1]area 0
[RT3-ospf-1-area-0.0.0.0]abr-summary 192.168.0.0 23
配置好了之后在RT4上查看一下路由表：
[R4]display ip routing-table
Routing Tables: Public
Destinations : 10 Routes : 10
Destination/Mask Proto Pre Cost NextHop Interface
2.2.2.2/32 OSPF 10 3124 20.1.1.1 S0/2/0
3.3.3.3/32 OSPF 10 1562 20.1.1.1 S0/2/0
4.4.4.4/32 Direct 0 0 127.0.0.1 InLoop0
10.1.1.0/24 OSPF 10 3124 20.1.1.1 S0/2/0
20.1.1.0/24 Direct 0 0 20.1.1.2
20.1.1.1/32 Direct 0 0 20.1.1.1 S0/2/0
20.1.1.2/32 Direct 0 0 127.0.0.1 InLoop0
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
192.168.0.0/23 OSPF 10 3124 20.1.1.1 S0/2/0
如上标识除了学到的路由信息，查看路由表发现网段已经进行了聚
合。
配置5类LSA的聚合：
之前RT2上对网段进行了network宣告，现在undo掉：
[RT2]ospf
[RT2-ospf-1]area 0
[RT2-ospf-1-area-0.0.0.0]undo network 192.168.0.1 0.0.0.0
[RT2-ospf-1-area-0.0.0.0]undo network 192.168.1.1 0.0.0.0
[RT2-ospf-1-area-0.0.0.0]quit
[RT2-ospf-1]quit
[RT2-ospf-1]import-route direct
[RT2-ospf-1]asbr-summary 192.168.0.0 23
配置好了之后在RT4路由器上查看路由表发现已经把5类LSA进行了
聚合，聚合成了一个大的网段，如下图所示：
[RT4]display ip routing-table
Routing Tables: Public
Destinations : 11 Routes : 11
Destination/Mask Proto Pre Cost NextHop Interface
2.2.2.2/32 OSPF 10 3124 20.1.1.1 S0/2/0
3.3.3.3/32 OSPF 10 1562 20.1.1.1 S0/2/0
4.4.4.4/32 Direct 0 0 127.0.0.1 InLoop0
10.1.1.0/24 OSPF 10 3124 20.1.1.1 S0/2/0
10.1.1.2/32 O_ASE 150 1 20.1.1.1 S0/2/0