View difference between Paste ID: R912MLcS and epnPM4J4

 ROUTER#show run
 Building configuration...
 
 Current configuration : 1970 bytes
 !
 version 12.4
 service timestamps debug datetime msec
 service timestamps log datetime msec
 no service password-encryption
 !
 hostname CME
 !
 boot-start-marker
 boot-end-marker
 !
 !
 no aaa new-model
 ip cef
 !
 !
 no ip dhcp use vrf connected
 ip dhcp excluded-address 172.20.0.1 172.20.0.20
 ip dhcp excluded-address 172.20.0.65 172.20.0.69
 ip dhcp excluded-address 172.20.0.129 172.20.0.130
 !
 ip dhcp pool VLAN100
    network 172.20.0.0 255.255.255.192
    default-router 172.20.0.1
    dns-server 8.8.8.8
 !
 ip dhcp pool VLAN200
    network 172.20.0.64 255.255.255.192
    dns-server 8.8.8.8
    default-router 172.20.0.65
 !
 ip dhcp pool VLAN300
    network 172.20.0.128 255.255.255.192
    default-router 172.20.0.129
    dns-server 8.8.8.8
 !
 !
 ip auth-proxy max-nodata-conns 3
 ip admission max-nodata-conns 3
 ip dhcp-client update dns
 !
 !
 !
 no spanning-tree vlan 100
 !
 !
 !
 interface FastEthernet0/0
  no ip address
  no shutdown
  speed auto
 !
 interface FastEthernet0/0.100
  encapsulation dot1Q 100
  ip address 172.20.0.1 255.255.255.192
  ip nat inside
  ip virtual-reassembly
 !
 interface FastEthernet0/0.200
  encapsulation dot1Q 200
  ip address 172.20.0.65 255.255.255.192
  ip nat inside
  ip virtual-reassembly
 !
 interface FastEthernet0/0.300
  encapsulation dot1Q 300
  ip address 172.20.0.129 255.255.255.192
  ip nat inside
  ip virtual-reassembly
 !
 interface FastEthernet0/0.1000
  encapsulation dot1Q 1000
  ip address dhcp
  ip nat outside
  ip virtual-reassembly
  ipv6 traffic-filter ipv6-fw in
 !
 interface Serial0/0
  no ip address
  shutdown
  no fair-queue
 !
 router eigrp 20
  network 172.16.0.0
  network 172.20.0.0 0.0.0.63
  network 172.20.0.64 0.0.0.63
  network 172.20.0.128 0.0.0.63
  no auto-summary
 !
 ip forward-protocol nd
 !
 !
 no ip http server
 no ip http secure-server
 ip nat inside source list 1 interface FastEthernet0/0.1000 overload
 !
 access-list 1 permit 172.20.0.0 0.0.0.255
 !
 ipv6 access-list ipv6-fw
  deny ipv6 any any
 !
 control-plane
 !
 !
 line con 0
  logging synchronous
 line aux 0
 line vty 0 4
  login
 !
 end
 
 
 SWITCH#sho run
 Building configuration...
 
 Current configuration : 2566 bytes
 !
 version 12.1
 no service pad
 service timestamps debug uptime
 service timestamps log uptime
 no service password-encryption
 !
 hostname CORE
 !
 !
 ip subnet-zero
 no ip finger
 !
 !
 no spanning-tree vlan 100
 !
 !
 interface FastEthernet0/1
  switchport access vlan 100
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/2
  switchport access vlan 100
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/3
  switchport access vlan 100
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/4
  switchport access vlan 100
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/5
  switchport access vlan 100
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/6
  switchport access vlan 100
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/7
  switchport access vlan 100
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/8
  switchport access vlan 100
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/9
  switchport access vlan 200
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/10
  switchport access vlan 200
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/11
  switchport access vlan 200
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/12
  switchport access vlan 200
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/13
  switchport access vlan 300
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/14
  switchport access vlan 300
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/15
  switchport access vlan 300
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/16
  switchport access vlan 300
  switchport mode access
  spanning-tree portfast
 !
 interface FastEthernet0/17
  switchport access vlan 100
  switchport mode access
 !
 interface FastEthernet0/18
  switchport mode trunk
 !
 interface FastEthernet0/19
 !
 interface FastEthernet0/20
 !
 interface FastEthernet0/21
 !
 interface FastEthernet0/22
 !
 interface FastEthernet0/23
  switchport mode trunk
 !
 interface FastEthernet0/24
  switchport access vlan 1000
  switchport mode access
  spanning-tree portfast
 !
 interface Vlan1
  no ip address
  no ip route-cache
  shutdown
 !
 ip http server
 !
 line con 0
  transport input all
  logging synchronous
 line vty 5 15
 !
 !
 end