Configuring RIP to advertise a summary route

As shown in Figure 10, Switch A and Switch B run OSPF, Switch D runs RIP, and Switch C runs OSPF and RIP. Configure RIP to redistribute OSPF routes on Switch C so Switch D can learn routes destined for networks 10.1.1.0/24, 10.2.1.0/24, 10.5.1.0/24, and 10.6.1.0/24.

To reduce the routing table size of Switch D, configure route summarization on Switch C to advertise only the summary route 10.0.0.0/8 to Switch D.

1. Configure IP addresses for interfaces. (Details not shown.)

2. Configure basic OSPF:

   # Configure Switch A.

   <SwitchA> system-view
   [SwitchA] ospf
   [SwitchA-ospf-1] area 0
   [SwitchA-ospf-1-area-0.0.0.0] network 10.5.1.0 0.0.0.255
   [SwitchA-ospf-1-area-0.0.0.0] network 10.2.1.0 0.0.0.255
   [SwitchA-ospf-1-area-0.0.0.0] quit
   

   # Configure Switch B.

   <SwitchB> system-view
   [SwitchB] ospf
   [SwitchB-ospf-1] area 0
   [SwitchB-ospf-1-area-0.0.0.0] network 10.1.1.0 0.0.0.255
   [SwitchB-ospf-1-area-0.0.0.0] network 10.6.1.0 0.0.0.255
   [SwitchB-ospf-1-area-0.0.0.0] quit
   

   # Configure Switch C.

   <SwitchC> system-view
   [SwitchC] ospf
   [SwitchC-ospf-1] area 0
   [SwitchC-ospf-1-area-0.0.0.0] network 10.1.1.0 0.0.0.255
   [SwitchC-ospf-1-area-0.0.0.0] network 10.2.1.0 0.0.0.255
   [SwitchC-ospf-1-area-0.0.0.0] quit
   [SwitchC-ospf-1] quit
   

3. Configure basic RIP:

   # Configure Switch C.

   [SwitchC] rip 1
   [SwitchC-rip-1] network 11.3.1.0
   [SwitchC-rip-1] version 2
   [SwitchC-rip-1] undo summary
   

   # Configure Switch D.

   <SwitchD> system-view
   [SwitchD] rip 1
   [SwitchD-rip-1] network 11.0.0.0
   [SwitchD-rip-1] version 2
   [SwitchD-rip-1] undo summary
   [SwitchD-rip-1] quit
   

   # Configure RIP to redistribute routes from OSPF process 1 and direct routes on Switch C.

   [SwitchC-rip-1] import-route direct
   [SwitchC-rip-1] import-route ospf 1
   [SwitchC-rip-1] quit
   

   # Display the IP routing table on Switch D.

   [SwitchD] display ip routing-table
   
   Destinations : 15        Routes : 15
   
   Destination/Mask    Proto  Pre  Cost         NextHop         Interface
   0.0.0.0/32          Direct 0    0            127.0.0.1       InLoop0
   10.1.1.0/24         RIP    100  1            11.3.1.1        Vlan300
   10.2.1.0/24         RIP    100  1            11.3.1.1        Vlan300
   10.5.1.0/24         RIP    100  1            11.3.1.1        Vlan300
   10.6.1.0/24         RIP    100  1            11.3.1.1        Vlan300
   11.3.1.0/24         Direct 0    0            11.3.1.2        Vlan300
   11.3.1.0/32         Direct 0    0            11.3.1.2        Vlan300
   11.3.1.2/32         Direct 0    0            127.0.0.1       InLoop0
   11.4.1.0/24         Direct 0    0            11.4.1.2        Vlan400
   11.4.1.0/32         Direct 0    0            11.4.1.2        Vlan400
   11.4.1.2/32         Direct 0    0            127.0.0.1       InLoop0
   127.0.0.0/8         Direct 0    0            127.0.0.1       InLoop0
   127.0.0.0/32        Direct 0    0            127.0.0.1       InLoop0
   127.0.0.1/32        Direct 0    0            127.0.0.1       InLoop0
   127.255.255.255/32  Direct 0    0            127.0.0.1       InLoop0
   

4. Configure route summarization:

   # Configure route summarization on Switch C and advertise only the summary route 10.0.0.0/8.

   [SwitchC] interface vlan-interface 300
   [SwitchC-Vlan-interface300] rip summary-address 10.0.0.0 8
   

   # Display the IP routing table on Switch D.

   [SwitchD] display ip routing-table
   
   Destinations : 12        Routes : 12
   
   Destination/Mask    Proto  Pre  Cost         NextHop         Interface
   0.0.0.0/32          Direct 0    0            127.0.0.1       InLoop0
   10.0.0.0/8          RIP    100  1            11.3.1.1        Vlan300
   11.3.1.0/24         Direct 0    0            11.3.1.2        Vlan300
   11.3.1.0/32         Direct 0    0            11.3.1.2        Vlan300
   11.3.1.2/32         Direct 0    0            127.0.0.1       InLoop0
   11.4.1.0/24         Direct 0    0            11.4.1.2        Vlan400
   11.4.1.0/32         Direct 0    0            11.4.1.2        Vlan400
   11.4.1.2/32         Direct 0    0            127.0.0.1       InLoop0
   127.0.0.0/8         Direct 0    0            127.0.0.1       InLoop0
   127.0.0.0/32        Direct 0    0            127.0.0.1       InLoop0
   127.0.0.1/32        Direct 0    0            127.0.0.1       InLoop0
   127.255.255.255/32  Direct 0    0            127.0.0.1       InLoop0