A1(config)#do show running-config
Building configuration...

Current configuration : 1739 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname A1
!
!
!
no ip domain-lookup
!
!
!
spanning-tree mode rapid-pvst
spanning-tree extend system-id
!
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 trunk
!
interface FastEthernet0/6
 switchport mode trunk
!
interface FastEthernet0/7
 switchport mode trunk
!
interface FastEthernet0/8
 switchport mode trunk
!
interface FastEthernet0/9
 switchport mode trunk
!
interface FastEthernet0/10
 switchport mode trunk
!
interface FastEthernet0/11
 switchport mode trunk
!
interface FastEthernet0/12
 switchport mode trunk
!
interface FastEthernet0/13
 switchport mode trunk
!
interface FastEthernet0/14
 switchport mode trunk
!
interface FastEthernet0/15
 switchport mode trunk
!
interface FastEthernet0/16
 switchport mode trunk
!
interface FastEthernet0/17
 switchport mode trunk
!
interface FastEthernet0/18
 switchport mode trunk
!
interface FastEthernet0/19
 switchport mode trunk
!
interface FastEthernet0/20
 switchport mode trunk
!
interface FastEthernet0/21
 switchport mode trunk
!
interface FastEthernet0/22
 switchport mode trunk
!
interface FastEthernet0/23
 switchport mode trunk
!
interface FastEthernet0/24
 switchport mode trunk
!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
!
interface Vlan1
 no ip address
 shutdown
!
interface Vlan100
 mac-address 0090.2b0c.7201
 ip address 10.0.100.3 255.255.254.0
!
!
!
!
line con 0
!
line vty 0 4
 login
line vty 5 15
 login
!
!
!
!
end


A1(config)#