------------------------------------------------------
R1
!
service password-encryption
!
hostname R1
!
!
!
enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
license udi pid CISCO1941/K9 sn FTX1524X79J
!
!
!
!
!
!
!
!
!
no ip domain-lookup
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface Loopback1
ip address 172.27.1.1 255.255.255.0
!
interface Loopback2
ip address 172.27.2.1 255.255.255.0
!
interface Loopback3
ip address 172.27.3.1 255.255.255.0
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
shutdown
!
interface GigabitEthernet0/1
description Link to S1
ip address 172.27.0.1 255.255.255.0
duplex auto
speed auto
standby version 2
standby 1 ip 172.27.0.2
standby 1 priority 150
standby 1 preempt
!
interface Serial0/0/0
description Link to R2
bandwidth 128
ip address 172.27.123.1 255.255.255.252
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 CISCO
ip ospf cost 7500
clock rate 128000
!
interface Serial0/0/1
no ip address
clock rate 2000000
shutdown
!
interface Vlan1
no ip address
shutdown
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
area 1 range 172.27.0.0 255.255.252.0
passive-interface GigabitEthernet0/0
passive-interface GigabitEthernet0/1
passive-interface Loopback1
passive-interface Loopback2
passive-interface Loopback3
auto-cost reference-bandwidth 1000
network 172.27.1.0 0.0.0.255 area 1
network 172.27.2.0 0.0.0.255 area 1
network 172.27.3.0 0.0.0.255 area 1
network 172.27.0.0 0.0.0.255 area 0
network 172.27.123.0 0.0.0.3 area 0
!
ip classless
!
ip flow-export version 9
!
!
!
banner motd ^C
Unauthorized Access is Prohibited!^C
!
!
!
!
line con 0
password 7 0822455D0A16
login
!
line aux 0
!
line vty 0 4
password 7 0822455D0A16
login
!
!
!
end
------------------------------------------------------
R2
!
service password-encryption
!
hostname R2
!
!
!
enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
license udi pid CISCO1941/K9 sn FTX1524FGJQ
!
!
!
!
!
!
!
!
!
no ip domain-lookup
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface Loopback0
ip address 209.165.200.225 255.255.255.248
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
shutdown
!
interface GigabitEthernet0/1
no ip address
duplex auto
speed auto
shutdown
!
interface Serial0/0/0
description Link to R1
bandwidth 128
ip address 172.27.123.2 255.255.255.252
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 CISCO
ip ospf cost 7500
!
interface Serial0/0/1
description Link to R3
bandwidth 128
ip address 172.27.123.5 255.255.255.252
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 CISCO
clock rate 128000
!
interface Vlan1
no ip address
shutdown
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
auto-cost reference-bandwidth 1000
network 172.27.123.0 0.0.0.3 area 0
network 172.27.123.4 0.0.0.3 area 0
default-information originate
!
ip classless
ip route 0.0.0.0 0.0.0.0 Loopback0
!
ip flow-export version 9
!
!
!
banner motd ^C
Unauthorized Access is Prohibited!^C
!
!
!
!
line con 0
password 7 0822455D0A16
login
!
line aux 0
!
line vty 0 4
password 7 0822455D0A16
login
!
!
!
end
------------------------------------------------------
R3
!
service password-encryption
!
hostname R3
!
!
!
enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1
!
!
!
!
!
!
no ip cef
no ipv6 cef
!
!
!
!
license udi pid CISCO1941/K9 sn FTX1524T49N
!
!
!
!
!
!
!
!
!
no ip domain-lookup
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface Loopback4
ip address 172.27.4.1 255.255.255.0
!
interface Loopback5
ip address 172.27.5.1 255.255.255.0
!
interface Loopback6
ip address 172.27.6.1 255.255.255.0
!
interface GigabitEthernet0/0
no ip address
duplex auto
speed auto
shutdown
!
interface GigabitEthernet0/1
description Link to S3
ip address 172.27.0.3 255.255.255.0
duplex auto
speed auto
standby version 2
standby 1 ip 172.27.0.2
!
interface Serial0/0/0
no ip address
clock rate 2000000
shutdown
!
interface Serial0/0/1
description Link to R2
bandwidth 128
ip address 172.27.123.6 255.255.255.252
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 CISCO
!
interface Vlan1
no ip address
shutdown
!
router ospf 1
router-id 3.3.3.3
log-adjacency-changes
area 3 range 172.27.4.0 255.255.252.0
passive-interface GigabitEthernet0/0
passive-interface GigabitEthernet0/1
passive-interface Loopback4
passive-interface Loopback5
passive-interface Loopback6
auto-cost reference-bandwidth 1000
network 172.27.0.0 0.0.0.255 area 0
network 172.27.123.4 0.0.0.3 area 0
network 172.27.4.0 0.0.0.255 area 3
network 172.27.5.0 0.0.0.255 area 3
network 172.27.6.0 0.0.0.255 area 3
!
ip classless
!
ip flow-export version 9
!
!
!
banner motd ^C
Unauthorized Access is Prohibited!^C
!
!
!
!
line con 0
password 7 0822455D0A16
login
!
line aux 0
!
line vty 0 4
password 7 0822455D0A16
login
!
!
!
end
------------------------------------------------------
S1
!
service password-encryption
!
hostname S1
!
enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1
!
!
!
no ip domain-lookup
!
!
spanning-tree mode rapid-pvst
spanning-tree vlan 1 priority 24576
!
interface FastEthernet0/1
switchport mode trunk
!
interface FastEthernet0/2
switchport mode trunk
!
interface FastEthernet0/3
channel-group 1 mode active
switchport mode trunk
!
interface FastEthernet0/4
channel-group 1 mode active
switchport mode trunk
!
interface FastEthernet0/5
switchport mode access
!
interface FastEthernet0/6
switchport mode access
spanning-tree portfast
spanning-tree bpduguard enable
!
interface FastEthernet0/7
switchport mode access
shutdown
!
interface FastEthernet0/8
switchport mode access
shutdown
!
interface FastEthernet0/9
switchport mode access
shutdown
!
interface FastEthernet0/10
switchport mode access
shutdown
!
interface FastEthernet0/11
switchport mode access
shutdown
!
interface FastEthernet0/12
switchport mode access
shutdown
!
interface FastEthernet0/13
switchport mode access
shutdown
!
interface FastEthernet0/14
switchport mode access
shutdown
!
interface FastEthernet0/15
switchport mode access
shutdown
!
interface FastEthernet0/16
switchport mode access
shutdown
!
interface FastEthernet0/17
switchport mode access
shutdown
!
interface FastEthernet0/18
switchport mode access
shutdown
!
interface FastEthernet0/19
switchport mode access
shutdown
!
interface FastEthernet0/20
switchport mode access
shutdown
!
interface FastEthernet0/21
switchport mode access
shutdown
!
interface FastEthernet0/22
switchport mode access
shutdown
!
interface FastEthernet0/23
switchport mode access
shutdown
!
interface FastEthernet0/24
switchport mode access
shutdown
!
interface GigabitEthernet0/1
switchport mode access
shutdown
!
interface GigabitEthernet0/2
switchport mode access
shutdown
!
interface Port-channel 1
switchport mode trunk
!
interface Vlan1
ip address 172.27.0.11 255.255.255.0
shutdown
!
ip default-gateway 172.27.0.2
!
banner motd ^C
Unauthorized Access is Prohibited!^C
!
!
!
line con 0
password 7 0822455D0A16
login
!
line vty 0 4
password 7 0822455D0A16
login
line vty 5 15
password 7 0822455D0A16
login
!
!
end
------------------------------------------------------
S2
!
service password-encryption
!
hostname S2
!
enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1
!
!
!
no ip domain-lookup
!
!
spanning-tree mode rapid-pvst
!
interface FastEthernet0/1
switchport mode trunk
!
interface FastEthernet0/2
switchport mode trunk
!
interface FastEthernet0/3
switchport mode trunk
!
interface FastEthernet0/4
switchport mode trunk
!
interface FastEthernet0/5
switchport mode access
shutdown
!
interface FastEthernet0/6
switchport mode access
shutdown
!
interface FastEthernet0/7
switchport mode access
shutdown
!
interface FastEthernet0/8
switchport mode access
shutdown
!
interface FastEthernet0/9
switchport mode access
shutdown
!
interface FastEthernet0/10
switchport mode access
shutdown
!
interface FastEthernet0/11
switchport mode access
shutdown
!
interface FastEthernet0/12
switchport mode access
shutdown
!
interface FastEthernet0/13
switchport mode access
shutdown
!
interface FastEthernet0/14
switchport mode access
shutdown
!
interface FastEthernet0/15
switchport mode access
shutdown
!
interface FastEthernet0/16
switchport mode access
shutdown
!
interface FastEthernet0/17
switchport mode access
shutdown
!
interface FastEthernet0/18
switchport mode access
spanning-tree portfast
spanning-tree bpduguard enable
!
interface FastEthernet0/19
switchport mode access
shutdown
!
interface FastEthernet0/20
switchport mode access
shutdown
!
interface FastEthernet0/21
switchport mode access
shutdown
!
interface FastEthernet0/22
switchport mode access
shutdown
!
interface FastEthernet0/23
switchport mode access
shutdown
!
interface FastEthernet0/24
switchport mode access
shutdown
!
interface GigabitEthernet0/1
switchport mode access
shutdown
!
interface GigabitEthernet0/2
switchport mode access
shutdown
!
interface Vlan1
ip address 172.27.0.12 255.255.255.0
shutdown
!
ip default-gateway 172.27.0.2
!
banner motd ^C
Unauthorized Access is Prohibited!^C
!
!
!
line con 0
password 7 0822455D0A16
login
!
line vty 0 4
password 7 0822455D0A16
login
line vty 5 15
password 7 0822455D0A16
login
!
!
end
------------------------------------------------------
S3
!
service password-encryption
!
hostname S3
!
enable secret 5 $1$mERr$9cTjUIEqNGurQiFU.ZeCi1
!
!
!
no ip domain-lookup
!
!
spanning-tree mode rapid-pvst
spanning-tree vlan 1 priority 28672
!
interface FastEthernet0/1
switchport mode trunk
!
interface FastEthernet0/2
switchport mode trunk
!
interface FastEthernet0/3
channel-group 1 mode passive
switchport mode trunk
!
interface FastEthernet0/4
channel-group 1 mode passive
switchport mode trunk
!
interface FastEthernet0/5
switchport mode access
!
interface FastEthernet0/6
switchport mode access
shutdown
!
interface FastEthernet0/7
switchport mode access
shutdown
!
interface FastEthernet0/8
switchport mode access
shutdown
!
interface FastEthernet0/9
switchport mode access
shutdown
!
interface FastEthernet0/10
switchport mode access
shutdown
!
interface FastEthernet0/11
switchport mode access
shutdown
!
interface FastEthernet0/12
switchport mode access
shutdown
!
interface FastEthernet0/13
switchport mode access
shutdown
!
interface FastEthernet0/14
switchport mode access
shutdown
!
interface FastEthernet0/15
switchport mode access
shutdown
!
interface FastEthernet0/16
switchport mode access
shutdown
!
interface FastEthernet0/17
switchport mode access
shutdown
!
interface FastEthernet0/18
switchport mode access
spanning-tree portfast
spanning-tree bpduguard enable
!
interface FastEthernet0/19
switchport mode access
shutdown
!
interface FastEthernet0/20
switchport mode access
shutdown
!
interface FastEthernet0/21
switchport mode access
shutdown
!
interface FastEthernet0/22
switchport mode access
shutdown
!
interface FastEthernet0/23
switchport mode access
shutdown
!
interface FastEthernet0/24
switchport mode access
shutdown
!
interface GigabitEthernet0/1
switchport mode access
shutdown
!
interface GigabitEthernet0/2
switchport mode access
shutdown
!
interface Port-channel 1
switchport mode trunk
!
interface Vlan1
ip address 172.27.0.13 255.255.255.0
!
ip default-gateway 172.27.0.2
!
banner motd ^C
Unauthorized Access is Prohibited!^C
!
!
!
line con 0
password 7 0822455D0A16
login
!
line vty 0 4
password 7 0822455D0A16
login
line vty 5 15
password 7 0822455D0A16
login
!
!
end