Switch 3 Final Configuration

Sw3#sh run
!
hostname Sw3
!
logging buffered informational
!
enable password cisco
!
vtp domain CCIELAB
vtp mode transparent
ip subnet-zero
ip routing
!
ip multicast-routing distributed
!
spanning-tree mode pvst
!
vlan internal allocation policy ascending
!
vlan 20,37
!
interface Loopback33
 ip address 120.100.33.1 255.255.255.0
!
interface FastEthernet0/1
!
interface FastEthernet0/2
!
interface FastEthernet0/3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
!
interface FastEthernet0/6
!
interface FastEthernet0/7
!
interface FastEthernet0/8
!
interface FastEthernet0/9
!
interface FastEthernet0/10
!
interface FastEthernet0/11
!
interface FastEthernet0/12
!
interface FastEthernet0/13
!
interface FastEthernet0/14
!
interface FastEthernet0/15
!
interface FastEthernet0/16
!
interface FastEthernet0/17
!
interface FastEthernet0/18
!
interface FastEthernet0/19
!
interface FastEthernet0/20
!
interface FastEthernet0/21
!
interface FastEthernet0/22
!
interface FastEthernet0/23
!
interface FastEthernet0/24
!
interface FastEthernet0/25
!
interface FastEthernet0/26
!
interface FastEthernet0/27
!
interface FastEthernet0/28
!
interface FastEthernet0/29
!
interface FastEthernet0/30
!
interface FastEthernet0/31
!
interface FastEthernet0/32
!
interface FastEthernet0/33
!
interface FastEthernet0/34
!
interface FastEthernet0/35
!
interface FastEthernet0/36
!
interface FastEthernet0/37
!
interface FastEthernet0/38
!
interface FastEthernet0/39
!
interface FastEthernet0/40
!
interface FastEthernet0/41
!
interface FastEthernet0/42
!
interface FastEthernet0/43
!
interface FastEthernet0/44
!
interface FastEthernet0/45
!
interface FastEthernet0/46
!
interface FastEthernet0/47
!
interface FastEthernet0/48
!
interface GigabitEthernet0/1
 description Trunk Link to Sw2
 switchport trunk encapsulation dot1q
 switchport mode trunk
!
interface GigabitEthernet0/2
 description Link to Sw2
 switchport access vlan 20
 switchport mode access
!
interface GigabitEthernet0/3
!
interface GigabitEthernet0/4
!
interface Vlan1
 no ip address
!
interface Vlan20
 ip address 120.100.20.3 255.255.255.0
!
interface Vlan37
 ip address 120.100.37.3 255.255.255.0
 ip pim sparse-mode
!
router ospf 1
 log-adjacency-changes
 network 120.100.33.0 0.0.0.255 area 2
 network 120.100.37.0 0.0.0.255 area 2
!
ip classless
ip http server
ip http secure-server
ip pim rp-address 120.100.14.4
!
control-plane
!
line con 0
 login
 password cisco
line vty 0 4
 login
 password cisco
line vty 5 15


Sw3#  sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route


     120.0.0.0/24 is subnetted, 7 subnets
C       120.100.20.0 is directly connected, Vlan20
O IA    120.100.12.0 [110/3] via 120.100.37.7, 05:04:29, Vlan37
O E2    120.100.13.0 [110/20] via 120.100.37.7, 05:04:29, Vlan37
O IA    120.100.14.0 [110/2] via 120.100.37.7, 05:04:29, Vlan37
O IA    120.100.11.0 [110/3] via 120.100.37.7, 05:04:29, Vlan37
C       120.100.37.0 is directly connected, Vlan37
C       120.100.33.0 is directly connected, Loopback0