en
conf t
! BASIC
hostname ISP-CORE1
clock timezone UTC +8
ip domain-name qualifier2026.skill39.int
username admin privilege 15 algorithm-type sha256 secret Passw0rd!
enable algorithm-type sha256 secret Passw0rd!
crypto key generate rsa modulus 3072
ip ssh version 2
banner motd AUTHORIZED ACCESS ONLY.
ip access-list standard SSH
permit 10.10.30.0 0.0.0.255
line vty 0 4
access-class SSH in
login local
transport input ssh
int loop0
ip add 10.255.0.1 255.255.255.255
no shu
int g0/0
ip add 203.0.113.1 255.255.255.0
no shu
int g0/1
ip add 172.16.0.1 255.255.255.252
no shu
int g0/2
ip add 172.16.0.5 255.255.255.252
no shu
int g0/3
ip add 172.16.0.9 255.255.255.252
no shu
! OSPF
ip route 0.0.0.0 0.0.0.0 203.0.113.10
router ospf 100
router-id 10.255.0.1
network 10.255.0.1 0.0.0.0 area 0
network 172.16.0.0 0.0.0.3 area 0
network 172.16.0.4 0.0.0.3 area 0
network 172.16.0.8 0.0.0.3 area 0
pass g0/0
default-information originate
exit
ISP-CORE2
en
conf t
! BASIC
hostname ISP-CORE2
clock timezone UTC +8
ip domain-name qualifier2026.skill39.int
username admin privilege 15 algorithm-type sha256 secret Passw0rd!
enable algorithm-type sha256 secret Passw0rd!
crypto key generate rsa modulus 3072
ip ssh version 2
banner motd AUTHORIZED ACCESS ONLY.
ip access-list standard SSH
permit 10.10.30.0 0.0.0.255
line vty 0 4
access-class SSH in
login local
transport input ssh
int loop0
ip add 10.255.0.2 255.255.255.255
no shu
int g0/0
ip add 172.16.0.2 255.255.255.252
no shu
int g0/1
ip add 172.16.0.13 255.255.255.252
no shu
int g0/2
ip add 172.16.0.17 255.255.255.252
no shu
! OSPF
router ospf 100
router-id 10.255.0.2
network 10.255.0.2 0.0.0.0 area 0
network 172.16.0.0 0.0.0.3 area 0
network 172.16.0.12 0.0.0.3 area 0
network 172.16.0.16 0.0.0.3 area 0
exit
ISP-PE1
en
conf t
! BASIC
hostname ISP-PE1
clock timezone UTC +8
ip domain-name qualifier2026.skill39.int
username admin privilege 15 algorithm-type sha256 secret Passw0rd!
enable algorithm-type sha256 secret Passw0rd!
crypto key generate rsa modulus 3072
ip ssh version 2
banner motd AUTHORIZED ACCESS ONLY.
ip access-list standard SSH
permit 10.10.30.0 0.0.0.255
line vty 0 4
access-class SSH in
login local
transport input ssh
int loop0
ip add 10.255.0.11 255.255.255.255
no shu
int g0/2
ip add 100.64.10.1 255.255.255.252
no shu
int g0/0
ip add 172.16.0.6 255.255.255.252
no shu
int g0/1
ip add 172.16.0.14 255.255.255.252
no shu
! OSPF
router ospf 100
router-id 10.255.0.11
network 10.255.0.11 0.0.0.0 area 0
network 172.16.0.4 0.0.0.3 area 0
network 172.16.0.12 0.0.0.3 area 0
network 100.64.10.0 0.0.0.3 area 0
pass g0/2
redistribute bgp 65050
exit
! BGP
ip prefix-list DEF seq 5 permit 0.0.0.0/0
route-map DEF permit 10
match ip address prefix-list DEF
router bgp 65050
neighbor 100.64.10.2 remote-as 65100
neighbor 100.64.10.2 route-map DEF out
neighbor 100.64.10.2 default-or
ISP-PE2
en
conf t
! BASIC
hostname ISP-PE2
clock timezone UTC +8
ip domain-name qualifier2026.skill39.int
username admin privilege 15 algorithm-type sha256 secret Passw0rd!
enable algorithm-type sha256 secret Passw0rd!
crypto key generate rsa modulus 3072
ip ssh version 2
banner motd AUTHORIZED ACCESS ONLY.
ip access-list standard SSH
permit 10.10.30.0 0.0.0.255
line vty 0 4
access-class SSH in
login local
transport input ssh
int loop0
ip add 10.255.0.12 255.255.255.255
no shu
int g0/3
ip add 100.64.20.1 255.255.255.252
no shu
int g0/0
ip add 172.16.0.10 255.255.255.252
no shu
int g0/1
ip add 172.16.0.18 255.255.255.252
no shu
! OSPF
router ospf 100
router-id 10.255.0.12
network 10.255.0.12 0.0.0.0 area 0
network 172.16.0.8 0.0.0.3 area 0
network 172.16.0.16 0.0.0.3 area 0
network 100.64.20.0 0.0.0.3 area 0
pass g0/3
redistribute bgp 65050
exit
! BGP
ip prefix-list DEF seq 5 permit 0.0.0.0/0
route-map DEF permit 10
match ip address prefix-list DEF
router bgp 65050
neighbor 100.64.20.2 remote-as 65110
neighbor 100.64.20.2 route-map DEF out
neighbor 100.64.20.2 default-or