实验三 三层交换与DHCP中继(上)

实验三 三层交换与DHCP中继
一、  实验目的
(1)   实验企业分支局域网二层广播域VLAN隔离和三层全网通
(2)   实现企业分支局域网的PC使用DHCP自动获取IP地址及DNS
 
二、  实验拓扑图
 
三、  实验步骤及结果
1、    基本配置
SW1 的基本配置:
Router>
Router>en
Router#config terminal
Router(config)#hostname SW1
SW1(config)#no ip domain-lookup
SW1(config)#line console 0
SW1(config-line)#logging synchronous
SW1(config-line)#no login
SW1(config-line)#privilege level 15
SW1(config-line)#line vty 0 4
SW1(config-line)#no login
SW1(config-line)#privilege level 15
SW3 的基本配置:
Switch>en
Switch#
Switch#config terminal
Switch(config)#hostname SW3
SW3(config)#no ip domain-lookup
SW3(config)#line console 0
SW3(config-line)# logging synchronous
SW3(config-line)#exec-timeout 0 0
SW3(config-line)#no login
SW3(config-line)#privilege level 15
SW3(config-line)#line vty 0 4
SW3(config-line)#no login
SW3(config-line)#privilege level 15
SW4 的基本配置:
Switch#config terminal
Switch(config)#hostname SW4
SW4(config)#no ip domain-lookup
SW4(config)#line console 0
SW4(config-line)#logging synchronous
SW4(config-line)#no login
SW4(config-line)#privilege level 15
SW4(config-line)#line vty 0 4
SW4(config-line)#no login
SW4(config-line)#privilege level 15
RT5 的基本配置:
Router>enable
Router#config termianl
Router#config terminal
Router(config)#hostname RT5
RT5(config)#no ip domain-lookup
RT5(config)#line console 0
RT5(config-line)#logging synchronous
RT5(config-line)#no login
RT5(config-line)#privilege level 15
RT5(config-line)#line vty 0 4
RT5(config-line)#privilege level 15
2、    三层网络的全网连通
  1SW1的配置
SW1#vlan database
SW1(vlan)#vlan 8 name wg
VLAN 8 added:
    Name: wg
SW1(vlan)#vlan 10 name sc
VLAN 10 added:
    Name: sc
SW1(vlan)#vlan 11 name bg
VLAN 11 added:
    Name: bg
SW1(vlan)#vlan 12 name fw
VLAN 12 added:
    Name: fw
SW1(vlan)#exit
APPLY completed.
Exiting....
SW1#config terminal
SW1(config)#interface fastethernet0/12
SW1(config-if)#switchport mode access
SW1(config-if)#switchport access vlan 12
SW1(config-if)#exit
SW1(config)#interface fastethernet0/1
SW1(config-if)#switchport trunk encapsulation dot1q
SW1(config-if)#switchport mode trunk
SW1(config-if)#switchport trunk allowed vlan all
SW1(config-if)#exit
SW1(config)#interface fastethernet0/2
SW1(config-if)#switchport trunk encapsulation dot1q
SW1(config-if)#switchport mode trunk
SW1(config-if)#switchport trunk allowed vlan all
SW1(config-if)#no shutdown
SW1(config-if)#exit
SW1(config)#int vlan 8
SW1(config-if)#ip address 192.168.8.129 255.255.255.128
SW1(config-if)#exit
SW1(config)#interface vlan 10
SW1(config-if)#ip address 192.168.10.1 255.255.255.0
SW1(config-if)#exit
SW1(config)#interface vlan 11
SW1(config-if)#ip address 192.168.11.1 255.255.255.0
SW1(config-if)#exit
SW1(config)#interface vlan 12
SW1(config-if)#ip 
SW1(config-if)#ip address 192.168.12.1 255.255.255.0
SW1(config)#do show interface trunk
Port      Mode         Encapsulation  Status        Native vlan
Fa0/1     on           802.1q         trunking      1
Fa0/2     on           802.1q         trunking      1
 
Port      Vlans allowed on trunk
Fa0/1     1-1005
Fa0/2     1-1005
 
Port      Vlans allowed and active in management domain
Fa0/1     1,8,10-12
Fa0/2     1,8,10-12
 
Port      Vlans in spanning tree forwarding state and not pruned
Fa0/1     1,8,10-12
Fa0/2     1,8,10-12
SW1(config)#do show ip interface brief
Interface         IP-Address   OK? Method Status            Protocol
FastEthernet0/0    unassigned   YES unset  up              down   
FastEthernet0/1   unassigned      YES unset  up            up     
FastEthernet0/2   unassigned      YES unset  up            up
FastEthernet0/12  unassigned      YES unset  up            up  
Vlan8           192.168.8.129   YES manual up             up     
Vlan10           192.168.10.1    YES manual up             up     
Vlan11           192.168.11.1    YES manual up             up     
Vlan12           192.168.12.1    YES manual up             up  
SW1(config)#do show vlan-s
VLAN Name                             Status    Ports
1    default                          active    Fa0/0, Fa0/3, Fa0/4, Fa0/5
                                                Fa0/6, Fa0/7, Fa0/8, Fa0/9
                                                Fa0/10, Fa0/11, Fa0/13, Fa0/14
                                                Fa0/15
8    wg                               active   
10   sc                               active   
11   bg                               active   
12   fw                               active    Fa0/12

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