R1
conf t
int l0
ip add 1.1.1.1 255.255.255.255
int g0/0
ip add 10.10.1.1 255.255.255.252
no shut
int g1/0
ip add 209.48.42.54 255.255.255.252
no shut
int g6/0
ip add 192.168.0.1 255.255.255.252
no shut
end
conf t
router bgp 1
bgp router-id 1.1.1.1
neighbor 209.48.42.53 remote-as 7
network 1.1.1.1 mask 255.255.255.255
network 209.48.42.52 mask 255.255.255.252
network 192.168.0.0 mask 255.255.255.252
neighbor 209.48.42.53 activate
no neighbor 209.48.42.53 prefix-list bgp-in in
no neighbor 209.48.42.53 prefix-list bgp-out out
neighbor 192.168.0.2 remote-as 2
neighbor 192.168.0.2 activate
address-family ipv4
network 25.25.25.0 mask 255.255.255.248
network 35.35.35.0 mask 255.255.255.248
exit
router ospf 1
router-id 1.1.1.1
redistribute connected subnets
redistribute static subnets
redistribute bgp 1 subnets
default-information originate
net 192.168.0.0 255.255.255.252 area 100
net 10.10.1.0 255.255.255.252 area 100
net 1.1.1.1 255.255.255.255 area 100
end
conf t
ip prefix-list bgp-in permit 25.25.25.0/29
ip prefix-list bgp-in permit 35.35.35.0/29
ip prefix-list bgp-in permit 7.7.7.7/32
ip prefix-list bgp-out permit 25.25.25.0/29
ip prefix-list bgp-out permit 35.35.35.0/29
end
conf t
ip route 0.0.0.0 0.0.0.0 209.48.42.53
end

*******************************************************
R2
conf t
int l0
ip add 2.2.2.2 255.255.255.255
int g0/0
ip add 10.10.2.1 255.255.255.252
no shut
int g1/0
ip add 216.68.218.66 255.255.255.252
no shut
int g6/0
ip add 192.168.0.2 255.255.255.252
no shut
end
conf t
router bgp 2
bgp router-id 2.2.2.2
neighbor 216.68.218.65 remote-as 7
neighbor 216.68.218.65 activate
neighbor 216.68.218.65 prefix-list bgp-in in
neighbor 216.68.218.65 prefix-list bgp-out out
network 216.68.218.64 mask 255.255.255.252
neighbor 192.168.0.1 remote-as 1
neighbor 192.168.0.1 activate
address-family ipv4
network 25.25.25.0 mask 255.255.255.248
network 35.35.35.0 mask 255.255.255.248
exit
router ospf 1
router-id 2.2.2.2
redistribute connected subnets
redistribute static subnets
redistribute bgp 2 subnets
default-information originate
net 10.10.2.0 255.255.255.252 area 100
net 192.168.0.0 255.255.255.252 area 100
network 2.2.2.2 255.255.255.255 area 100
end
conf t
ip prefix-list bgp-in permit 25.25.25.0/29
ip prefix-list bgp-in permit 35.35.35.0/29
ip prefix-list bgp-in permit 7.7.7.7/32
ip prefix-list bgp-out permit 25.25.25.0/29
ip prefix-list bgp-out permit 35.35.35.0/29
end
conf t
ip route 0.0.0.0 0.0.0.0 216.68.218.65
end

*******************************************************
R3
conf t
int l0
ip add 3.3.3.3 255.255.255.255
int g0/0
ip add 10.10.1.2 255.255.255.252
no shut
int g1/0
ip add 172.16.1.1 255.255.255.252
no shut
int g2/0
ip add 10.10.1.5 255.255.255.252
no shut
end
conf t
router ospf 1
router-id 3.3.3.3
net 10.10.1.4 255.255.255.252 area 100
net 172.16.1.0 255.255.255.252 area 100
net 10.10.1.0 255.255.255.252 area 100
net 3.3.3.3 255.255.255.255 area 100
end

*******************************************************
R4
conf t
int l0
ip add 4.4.4.4 255.255.255.255
int g0/0
ip add 10.10.2.2 255.255.255.252
no shut
int g1/0
ip add 172.16.1.2 255.255.255.252
no shut
int g2/0
ip add 10.10.2.5 255.255.255.252
no shut
end

conf t
router ospf 1
router-id 4.4.4.4
net 10.10.2.4 255.255.255.252 area 100
net 172.16.1.0 255.255.255.252 area 100
net 10.10.2.0 255.255.255.252 area 100
net 4.4.4.4 255.255.255.255 area 100
end

*******************************************************
R5
conf t
int l0
ip add 5.5.5.5 255.255.255.255
int l1
ip add 25.25.25.1 255.255.255.248
int g1/0
ip add 192.168.1.1 255.255.255.252
no shut
int g2/0
ip add 10.10.1.6 255.255.255.252
no shut
end

conf t
router ospf 1
router-id 5.5.5.5
net 10.10.1.4 255.255.255.252 area 100
net 192.168.1.0 255.255.255.252 area 100
net 25.25.25.0 255.255.255.248 area 100
net 5.5.5.5 255.255.255.255 area 100
end

*******************************************************
R6
conf t
int l0
ip add 6.6.6.6 255.255.255.255
int l1
ip add 35.35.35.1 255.255.255.248
int g1/0
ip add 192.168.1.2 255.255.255.252
no shut
int g2/0
ip add 10.10.2.6 255.255.255.252
no shut
end

conf t
router ospf 1
router-id 6.6.6.6
net 10.10.2.4 255.255.255.252 area 100
net 192.168.1.0 255.255.255.252 area 100
net 35.35.35.0 255.255.255.248 area 100
net 6.6.6.6 255.255.255.255 area 100
end

*******************************************************
R7
conf t
int g0/0
ip add 209.48.42.53 255.255.255.252
no shut
int g1/0
ip add 216.68.218.65 255.255.255.252
no shut
int l0
ip add 7.7.7.7 255.255.255.255
no shut
end

conf t
router bgp 7
bgp router-id 7.7.7.7
network 7.7.7.7 mask 255.255.255.255
neighbor 216.68.218.66 remote-as 2
network 216.68.218.64 mask 255.255.255.252
neighbor 216.68.218.66 activate
neighbor 216.68.218.66 prefix-list bgp-in in
neighbor 216.68.218.66 prefix-list bgp-out out
neighbor 209.48.42.54 remote-as 1
neighbor 209.48.42.54 activate
neighbor 209.48.42.54 prefix-list bgp-in in
neighbor 209.48.42.54 prefix-list bgp-out out
network 209.48.42.52 mask 255.255.255.252
end