4-6
IP Route Policy Configuration Example

Controlling RIP Packet Cost to Implement Dynamic Route Backup

Network requirements

The required speed of convergence in the small network of a company is not high. The network
provides two services. Main and backup links are provided for each service for the purpose of reliability.
The main link of one service serves as the backup link of the other. The two services are distinguished
by IP addresses. If a fault occurs to the main link of one service, dynamic backup can prevent service
interruption.

Network diagram

According to the network requirements, the network topology is designed as shown in Figure 4-1.
Figure 4-1 Network diagram
Device Interface IP address
Switch A Vlan-int 2 2.2.2.1/8
Vlan-int 3 3.3.3.254/8
Vlan-int 10 1.1.1.254/8
Switch B Vlan-int 3 3.3.3.253/8
Vlan-int 6 6.6.6.5/8
Vlan-int 10 1.1.1.253/8
Switch C Vlan-int 1 192.168.0.39/24
Vlan-int 2 2.2.2.2/8
Vlan-int 6 6.6.6.6/8
OA Server 1.1.1.1/32
Service Server 3.3.3.3/32
Host 192.168.0.9/24

Configuration considerations

z According to the network requirements, select RIP.