Download the tshoot topology from cisco, CCO login is required.
These are the configurations of R1 in the diagram.
interface Serial0/1/0
no ip address
encapsulation frame-relay
end
interface Serial0/1/0.12 point-to-point
bandwidth 128
ip address 10.1.1.1 255.255.255.252
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 cisco
frame-relay interface-dlci 102
end
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
passive-interface default
no passive-interface Serial0/1/0.12
network 10.1.1.1 0.0.0.0 area 12
router bgp 65001
no synchronization
bgp log-neighbor-changes
neighbor 22.22.22.22 remote-as 65002
neighbor 22.22.22.22 ebgp-multihop 2
neighbor 22.22.22.22 update-source Loopback65001
no auto-summary
ip route 22.22.22.22 255.255.255.255 209.65.200.226
interface Loopback65001
ip address 11.11.11.11 255.255.255.255
end