# Configure Switch B.
[SwitchB] bgp 200
[SwitchB-bgp] peer 11.1.1.2 as 100
[SwitchB-bgp] address-family ipv4 unicast
[SwitchB-bgp-ipv4] import-route ospf
[SwitchB-bgp-ipv4] import-route direct
[SwitchB-bgp ipv4] quit
[SwitchB-bgp] quit
# Configure Switch C.
[SwitchC] bgp 100
[SwitchC-bgp] peer 11.1.1.1 as 200
[SwitchC-bgp] address-family ipv4 unicast
[SwitchC-bgp-ipv4] import-route ospf
[SwitchC-bgp-ipv4]import-route direct
[SwitchC-bgp-ipv4] quit
[SwitchC-bgp] quit
4.
Configure Switch B and Switch C to redistribute BGP routes into OSPF:
# Configure OSPF to redistribute routes from BGP on Switch B.
[SwitchB] ospf
[SwitchB-ospf-1] import-route bgp
# Configure OSPF to redistribute routes from BGP on Switch C.
[SwitchC] ospf
[SwitchC-ospf-1] import-route bgp
# Display the OSPF routing table on Switch A.
[SwitchA] display ip routing-table
Destinations : 16
Destination/Mask
0.0.0.0/32
10.1.1.0/24
10.2.1.0/24
10.3.1.0/24
10.4.1.0/24
11.2.1.0/24
11.2.1.0/32
11.2.1.2/32
11.2.1.255/32
127.0.0.0/8
127.0.0.0/32
127.0.0.1/32
127.255.255.255/32
224.0.0.0/4
224.0.0.0/24
255.255.255.255/32
5.
Configure route summarization:
Routes : 16
Proto
Pre
Cost
Direct 0
0
OSPF
150
1
OSPF
150
1
OSPF
150
1
OSPF
150
1
Direct 0
0
Direct 0
0
Direct 0
0
Direct 0
0
Direct 0
0
Direct 0
0
Direct 0
0
Direct 0
0
Direct 0
0
Direct 0
0
Direct 0
0
103
NextHop
Interface
127.0.0.1
InLoop0
11.2.1.1
Vlan100
11.2.1.1
Vlan100
11.2.1.1
Vlan100
11.2.1.1
Vlan100
11.2.1.2
Vlan100
11.2.1.2
Vlan100
127.0.0.1
InLoop0
11.2.1.2
Vlan100
127.0.0.1
InLoop0
127.0.0.1
InLoop0
127.0.0.1
InLoop0
127.0.0.1
InLoop0
0.0.0.0
NULL0
0.0.0.0
NULL0
127.0.0.1
InLoop0