=== R1 ===
hostname R1
ip cef
interface Loopback0
 ip address 10.255.0.1 255.255.255.255
exit
interface GigabitEthernet1
 ip address 192.0.2.1 255.255.255.252
 no shutdown
exit
interface GigabitEthernet2
 ip address 192.0.2.5 255.255.255.252
 no shutdown
exit
router bgp 65001
 bgp router-id 10.255.0.1
 no bgp default ipv4-unicast
 neighbor 192.0.2.2 remote-as 65020
 neighbor 192.0.2.6 remote-as 65020
 address-family ipv4 unicast
  no auto-summary
  neighbor 192.0.2.2 activate
  neighbor 192.0.2.6 activate
  network 10.255.0.1 mask 255.255.255.255
 exit-address-family
end

=== R2 ===
hostname R2
ip cef
interface Loopback0
 ip address 10.255.0.2 255.255.255.255
exit
interface GigabitEthernet1
 ip address 192.0.2.2 255.255.255.252
 no shutdown
exit
interface GigabitEthernet2
 ip address 192.0.2.9 255.255.255.252
 no shutdown
exit
interface GigabitEthernet3
 ip ospf cost 50
 ip address 192.0.2.25 255.255.255.252
 no shutdown
exit
router ospf 1
 router-id 10.255.0.2
 network 10.255.0.2 0.0.0.0 area 0
 passive-interface Loopback0
 network 192.0.2.9 0.0.0.0 area 0
 network 192.0.2.25 0.0.0.0 area 0
exit
router bgp 65020
 bgp router-id 10.255.0.2
 no bgp default ipv4-unicast
 neighbor 192.0.2.1 remote-as 65001
 neighbor 10.255.0.5 remote-as 65020
 neighbor 10.255.0.5 update-source Loopback0
 address-family ipv4 unicast
  no auto-summary
  neighbor 192.0.2.1 activate
  neighbor 10.255.0.5 activate
  neighbor 10.255.0.5 next-hop-self
 exit-address-family
end

=== R3 ===
hostname R3
ip cef
interface Loopback0
 ip address 10.255.0.3 255.255.255.255
exit
interface GigabitEthernet1
 ip address 192.0.2.6 255.255.255.252
 no shutdown
exit
interface GigabitEthernet2
 ip address 192.0.2.13 255.255.255.252
 no shutdown
exit
interface GigabitEthernet3
 ip ospf cost 50
 ip address 192.0.2.29 255.255.255.252
 no shutdown
exit
router ospf 1
 router-id 10.255.0.3
 network 10.255.0.3 0.0.0.0 area 0
 passive-interface Loopback0
 network 192.0.2.13 0.0.0.0 area 0
 network 192.0.2.29 0.0.0.0 area 0
exit
router bgp 65020
 bgp router-id 10.255.0.3
 no bgp default ipv4-unicast
 neighbor 192.0.2.5 remote-as 65001
 neighbor 10.255.0.5 remote-as 65020
 neighbor 10.255.0.5 update-source Loopback0
 address-family ipv4 unicast
  no auto-summary
  neighbor 192.0.2.5 activate
  neighbor 10.255.0.5 activate
  neighbor 10.255.0.5 next-hop-self
 exit-address-family
end

=== R4 ===
hostname R4
ip cef
interface Loopback0
 ip address 10.255.0.4 255.255.255.255
exit
interface GigabitEthernet1
 ip address 192.0.2.10 255.255.255.252
 no shutdown
exit
interface GigabitEthernet2
 ip address 192.0.2.14 255.255.255.252
 no shutdown
exit
interface GigabitEthernet3
 ip address 192.0.2.17 255.255.255.252
 no shutdown
exit
interface GigabitEthernet4
 ip address 192.0.2.21 255.255.255.252
 no shutdown
exit
router ospf 1
 router-id 10.255.0.4
 network 10.255.0.4 0.0.0.0 area 0
 passive-interface Loopback0
 network 192.0.2.10 0.0.0.0 area 0
 network 192.0.2.14 0.0.0.0 area 0
 network 192.0.2.17 0.0.0.0 area 0
 network 192.0.2.21 0.0.0.0 area 0
exit
router bgp 65020
 bgp router-id 10.255.0.4
 no bgp default ipv4-unicast
 neighbor 10.255.0.5 remote-as 65020
 neighbor 10.255.0.5 update-source Loopback0
 address-family ipv4 unicast
  no auto-summary
  neighbor 10.255.0.5 activate
 exit-address-family
end

=== R5 ===
hostname R5
ip cef
interface Loopback0
 ip address 10.255.0.5 255.255.255.255
exit
interface GigabitEthernet1
 ip ospf cost 50
 ip address 192.0.2.26 255.255.255.252
 no shutdown
exit
interface GigabitEthernet2
 ip ospf cost 50
 ip address 192.0.2.30 255.255.255.252
 no shutdown
exit
interface GigabitEthernet3
 ip ospf cost 50
 ip address 192.0.2.33 255.255.255.252
 no shutdown
exit
interface GigabitEthernet4
 ip ospf cost 50
 ip address 192.0.2.37 255.255.255.252
 no shutdown
exit
router ospf 1
 router-id 10.255.0.5
 network 10.255.0.5 0.0.0.0 area 0
 passive-interface Loopback0
 network 192.0.2.26 0.0.0.0 area 0
 network 192.0.2.30 0.0.0.0 area 0
 network 192.0.2.33 0.0.0.0 area 0
 network 192.0.2.37 0.0.0.0 area 0
exit
router bgp 65020
 bgp router-id 10.255.0.5
 no bgp default ipv4-unicast
 neighbor 10.255.0.2 remote-as 65020
 neighbor 10.255.0.2 update-source Loopback0
 neighbor 10.255.0.3 remote-as 65020
 neighbor 10.255.0.3 update-source Loopback0
 neighbor 10.255.0.4 remote-as 65020
 neighbor 10.255.0.4 update-source Loopback0
 neighbor 10.255.0.6 remote-as 65020
 neighbor 10.255.0.6 update-source Loopback0
 neighbor 10.255.0.7 remote-as 65020
 neighbor 10.255.0.7 update-source Loopback0
 address-family ipv4 unicast
  no auto-summary
  neighbor 10.255.0.2 activate
  neighbor 10.255.0.2 route-reflector-client
  neighbor 10.255.0.3 activate
  neighbor 10.255.0.3 route-reflector-client
  neighbor 10.255.0.4 activate
  neighbor 10.255.0.4 route-reflector-client
  neighbor 10.255.0.6 activate
  neighbor 10.255.0.6 route-reflector-client
  neighbor 10.255.0.7 activate
  neighbor 10.255.0.7 route-reflector-client
 exit-address-family
end

=== R6 ===
hostname R6
ip cef
interface Loopback0
 ip address 10.255.0.6 255.255.255.255
exit
interface GigabitEthernet1
 ip address 192.0.2.18 255.255.255.252
 no shutdown
exit
interface GigabitEthernet2
 ip ospf cost 50
 ip address 192.0.2.34 255.255.255.252
 no shutdown
exit
interface GigabitEthernet3
 ip address 192.0.2.41 255.255.255.252
 no shutdown
exit
router ospf 1
 router-id 10.255.0.6
 network 10.255.0.6 0.0.0.0 area 0
 passive-interface Loopback0
 network 192.0.2.18 0.0.0.0 area 0
 network 192.0.2.34 0.0.0.0 area 0
exit
router bgp 65020
 bgp router-id 10.255.0.6
 no bgp default ipv4-unicast
 neighbor 10.255.0.5 remote-as 65020
 neighbor 10.255.0.5 update-source Loopback0
 neighbor 192.0.2.42 remote-as 65008
 address-family ipv4 unicast
  no auto-summary
  neighbor 10.255.0.5 activate
  neighbor 10.255.0.5 next-hop-self
  neighbor 192.0.2.42 activate
 exit-address-family
end

=== R7 ===
hostname R7
ip cef
interface Loopback0
 ip address 10.255.0.7 255.255.255.255
exit
interface GigabitEthernet1
 ip address 192.0.2.22 255.255.255.252
 no shutdown
exit
interface GigabitEthernet2
 ip ospf cost 50
 ip address 192.0.2.38 255.255.255.252
 no shutdown
exit
interface GigabitEthernet3
 ip address 192.0.2.45 255.255.255.252
 no shutdown
exit
router ospf 1
 router-id 10.255.0.7
 network 10.255.0.7 0.0.0.0 area 0
 passive-interface Loopback0
 network 192.0.2.22 0.0.0.0 area 0
 network 192.0.2.38 0.0.0.0 area 0
exit
router bgp 65020
 bgp router-id 10.255.0.7
 no bgp default ipv4-unicast
 neighbor 10.255.0.5 remote-as 65020
 neighbor 10.255.0.5 update-source Loopback0
 neighbor 192.0.2.46 remote-as 65008
 address-family ipv4 unicast
  no auto-summary
  neighbor 10.255.0.5 activate
  neighbor 10.255.0.5 next-hop-self
  neighbor 192.0.2.46 activate
 exit-address-family
end

=== R8 ===
hostname R8
ip cef
interface Loopback0
 ip address 10.255.0.8 255.255.255.255
exit
interface Loopback10
 ip address 198.51.100.8 255.255.255.255
exit
interface Loopback11
 ip address 198.51.100.88 255.255.255.255
exit
interface GigabitEthernet1
 ip address 192.0.2.42 255.255.255.252
 no shutdown
exit
interface GigabitEthernet2
 ip address 192.0.2.46 255.255.255.252
 no shutdown
exit
router bgp 65008
 bgp router-id 10.255.0.8
 no bgp default ipv4-unicast
 neighbor 192.0.2.41 remote-as 65020
 neighbor 192.0.2.45 remote-as 65020
 address-family ipv4 unicast
  no auto-summary
  neighbor 192.0.2.41 activate
  neighbor 192.0.2.45 activate
  network 198.51.100.8 mask 255.255.255.255
  network 198.51.100.88 mask 255.255.255.255
 exit-address-family
end