Static routing experiment configuration

One 、 The experiment purpose ：

Through routing configuration, the topology environment shown in the figure below can reach the whole network

---

Two 、 The experimental requirements ：

1. except AR5 The loopback address of is fixed outside , All other network segments need to be based on 192.168.1.0/24 Make reasonable IP Address partition

2.AR1-AR4 Each router has two loopback interfaces , For analog connection PC The network segment ; The address is also 192.168.1.0/24 This network address range

3.AR1-AR4 You can't write directly to 5.5.5.0/24 Static routing of , But there's still access to 5.5.5.0/24 Network segment

4. Make the whole topology environment accessible to the whole network , Try to reduce the number of routing table entries per router , Avoid loop problems

5.AR4 And AR5 Between , Normal communication is 1000M link ,1000M When the link fails, it will be automatically changed to 100M link

---

3、 ... and 、 The experimental steps ：

 1. According to the requirements of the experiment 192.168.1.0/24 The network segment is divided into subnets ：

AR1-AR4 Each router has two loopback interfaces , namely AR1-AR4 Each router has two loop changing sections , A total of 8 Loop road ;

AR1-AR4 The network segment directly connected to the router is shown as 6 Backbone link network segments ;

8 Loop road +6 Backbone link network segments =14 Net segment ;

Therefore, a total of 192.168.1.0/24 Divide into 14 Net segment ;

Master network 192.168.1.0/24（ namely 192.168.1.0000 0000/24）

AR1-AR2：192.168.1.0/28      00000000
AR2-AR4：192.168.1.16/28    00010000

Manual subnet summary ：192.168.1.0/27

AR1-AR3:  192.168.1.32/28     00100000
AR3-AR4:   192.168.1.48/28    00110000

Manual subnet summary ：192.168.32.0/27

AR4-AR5:    192.168.1.64/28     01000000（preference：60）1000M link
AR5-AR4:    192.168.1.80/28     01010000（preference：61）100M link

Manual subnet summary ：192.168.64.0/27

AR1 Loopback ：

192.168.1.224/28    11100000
192.168.1.240/28    11110000

Manual subnet summary ：192.168.1.224/27

AR2 Loopback ：

192.168.1.128/28   10000000
192.168.1.144/28   10010000

Manual subnet summary ：192.168.1.128/27

AR3 Loopback ：

192.168.1.160/28 10100000
192.168.1.176/28 10110000

Manual subnet summary ：192.168.1.160/27

AR4 Loopback ：

192.168.1.192/28 11000000
192.168.1.208/28 11010000

Manual subnet summary ：192.168.1.192/27

Summary of four manual summary subnets ：192.168.1.128/25

Two reserved network segments ：

1）192.168.1.96/28

2）192.168.1.112/28

IP The division of address subnet is shown in the figure ：

 

summary ： Through such subnet division and manual subnet summary , It can reduce the generation of routing black holes ;

2. Change the router name ：

With AR1 For example ：

<Huawei>system-view 
[Huawei]sysname sw1
[sw1]

3. Use of default routes ：

Because the experiment requires AR1-AR4 You can't write directly to 5.5.5.0/24 Static routing of , But there's still access to 5.5.5.0/24 Network segment , Therefore, we can only access through the default route ;

With AR1 For example ：

[sw1]ip route-static 0.0.0.0 0 192.168.1.2

[sw1]ip route-static 0.0.0.0 0 192.168.1.34

4. Configuration of empty interface route ：

When the summary address includes network segments that do not actually exist in the network , It will cause the flow to have no return , Waste link resources , This creates a routing black hole ; When the routing black hole meets the default routing , There will inevitably be loopback links , Therefore, we need to configure a router with an empty interface route to the summary network segment , To discard traffic , Avoid loopback links .

With AR1 For example ：[AR1]ip route-static 192.168.1.224 27 NULL 0

5. to AR4 To AR5 Set the priority of the path ：

Required by the experiment AR4 And AR5 Between , Normal communication is 1000M link ,1000M When the link fails, it will be automatically changed to 100M link ;

So we need to set 1000M Segments and 100M Routing priority of network segment ;

With AR1 For example ：

[sw1]ip route-static 192.168.1.64 28 192.168.1.2

[sw1]ip route-static 192.168.1.64 28 192.168.1.34

[sw1]ip route-static 192.168.1.80 28 192.168.1.2 preference 61

[sw1]ip route-static 192.168.1.80 28 192.168.1.34 preference 61

6. Distribute IP Address , Loopback address , Router port address ：

1）AR1：

[sw1-GigabitEthernet0/0/0]ip address 192.168.1.1

[sw1-GigabitEthernet0/0/1]ip address 192.168.1.33

[sw1]interface LoopBack 0

[sw1-LoopBack0]ip address 192.168.1.224 28

[sw1]interface LoopBack 1

[sw1-LoopBack1]ip address 192.168.1.240 28

2）AR2：

[sw2-GigabitEthernet0/0/0]ip address 192.168.1.2

[sw2-GigabitEthernet0/0/1]ip address 192.168.1.17

[sw2]interface LoopBack 0

[sw2-LoopBack0]ip address 192.168.1.128 28

[sw2]interface LoopBack 1

[sw2-LoopBack0]ip address 192.168.1.144 28

3）AR3：

[sw3-GigabitEthernet0/0/0]ip address 192.168.1.34

[sw3-GigabitEthernet0/0/1]ip address 192.168.1.49

[sw3]interface LoopBack 0

[sw3-LoopBack0]ip address 192.168.1.160 28

[sw3]interface LoopBack 1

[sw3-LoopBack1]ip address 192.168.1.176 28

4）AR4：

[sw4-GigabitEthernet0/0/0]ip address 192.168.1.18

[sw4-GigabitEthernet0/0/1]ip address 192.168.1.65

[sw4-GigabitEthernet0/0/2]ip address 192.168.1.50

[sw4-GigabitEthernet4/0/0]ip address 192.168.1.81

[sw4]interface LoopBack 0

[sw4-LoopBack0]ip address 192.168.1.192 28

[sw4]interface LoopBack 1

[sw4-LoopBack1]ip address 192.168.1.208 28

5）AR5：

[sw5-GigabitEthernet0/0/0]ip address 192.168.1.66

[sw5-GigabitEthernet0/0/1]ip address 192.168.1.82

[sw5]interface LoopBack 0

[sw5-LoopBack0]ip address 5.5.5.1 24

6. Static routing 、 Default route 、 Add an empty interface

With AR1 and AR2 For example ：

1）AR1：

Static routing ：

[sw1]ip route-static 192.168.1.16 28 192.168.1.2

[sw1]ip route-static 192.168.1.48 28 192.168.1.34

[sw1]ip route-static 192.168.1.64 28 192.168.1.2

[sw1]ip route-static 192.168.1.64 28 192.168.1.34

[sw1]ip route-static 192.168.1.128 27 192.168.1.2

[sw1]ip route-static 192.168.1.160 27 192.168.1.34

[sw1]ip route-static 192.168.1.192 27 192.168.1.2

[sw1]ip route-static 192.168.1.192 27 192.168.1.34

[sw1]ip route-static 192.168.1.80 28 192.168.1.2 preference 61

[sw1]ip route-static 192.168.1.80 28 192.168.1.34 preference 61

Default route ：

[sw1]ip route-static 0.0.0.0 0 192.168.1.2

[sw1]ip route-static 0.0.0.0 0 192.168.1.34

Empty interface ：

[sw1]ip route-static 192.168.1.224 27 NULL 0

 2）AR2：

Static routing ：

[sw2]ip route-static 192.168.1.32 28 192.168.1.1

[sw2]ip route-static 192.168.1.48 28 192.168.1.18

[sw2]ip route-static 192.168.1.64 28 192.168.1.18

[sw2]ip route-static 192.168.1.80 28 192.168.1.18 preference 61

[sw2]ip route-static 192.168.1.224 27 192.168.1.1

[sw2]ip route-static 192.168.1.192 27 192.168.1.18

[sw2]ip route-static 192.168.1.160 27 192.168.1.1

[sw2]ip route-static 192.168.1.160 27 192.168.1.18

Default route ：

[sw2]ip route-static 0.0.0.0 0 192.168.1.1

[sw2]ip route-static 0.0.0.0 0 192.168.1.18

Empty interface ：

[sw2]ip route-static 192.168.1.128 27 NULL 0

---

Four 、 test ：

1） The whole network can reach ：

2） When 1000M When the link fails , Automatically turn to 100M Link transmission data

As mentioned above ： All the requirements of the experiment have been met  , Successful experiment .