Instance resolution (1)

China siteFloating SummaryRoutingThe configuration process is as follows:

Topology of the floating summary routing configuration of the MongoDB instance

Interface connection of the routing configuration of the floating Summary of the VPN using the VPN gateway

 
 

  
  
Router1 S0/0 <----> Router2 S0/0  
  
  
Router2 S0/1 <----> Router3 S0/0  
  
  
Router1 S0/1 <----> Router4 S0/0  
  
  
Router3 S0/1 <----> Router4 S0/1  
  
  
VPCS V0/1 <----> Router1 E1/0  
  
  
VPCS V0/2 <----> Router3 E1/0 
 
 

Principle of the floating summary routing configuration of the MongoDB instance

Run the OSPF routing protocol on R1 \ R2 \ R3 \ R4. R4 publishes a 0.0.0.0 0.0.0.0 summary route to R3 through S0/1, and sets the Management Distance of this floating route to 250, so when the network is connected, the route that reaches the network segment 200.1.1.0/24 on R3 goes through R2, and when the link between R2 and R3 fails, data packets sent to 200.1.1.0/24 through R3 are transmitted through the R4R3 topology table. The default route is changed from A to P)

Key configurations of the floating summary routing configuration of VPN gateway

 
 

  
  
R1:  
  
  
interface Serial0/0  
  
  
ip address 192.168.1.1 255.255.255.0  
  
  
serial restart-delay 0  
  
  
!  
  
  
interface Serial0/1  
  
  
ip address 192.168.3.1 255.255.255.0  
  
  
serial restart-delay 0  
  
  
!  
  
  
interface Ethernet1/0  
  
  
ip address 200.1.1.254 255.255.255.0  
  
  
half-duplex  
  
  
!  
  
  
router eigrp 100  
  
  
network 192.168.1.0  
  
  
network 192.168.3.0  
  
  
network 200.1.1.0  
  
  
no auto-summary 
 
 

R2 and R3 are omitted. Configure the interface IP address and routing protocol by referring to R1. Focus on the configuration of R4.

 
 

  
  
R4:
  
  
Interface Serial0/0
  
  
Ip address 192.168.3.2 255.255.255.0
  
  
Serial restart-delay 0
  
  
!
  
  
Interface Serial0/1
  
  
Ip address 192.168.4.1 255.255.255.0
  
  
Ip summary-address subnet 100 0.0.0.0 0.0.0.0 250 is routed to R3 through the default route, and the Management Distance is higher than the default value of OSPF )!
  
  
Router VPN 100
  
  
Network 192.168.3.0
  
  
Network 192.168.4.0
  
  
Auto-summary