Packet Tracer 5.0实验(三) 交换机划分VLAN配置

一、实验目标

  • 理解虚拟 LAN(VLAN)基本原理;
  • 掌握一般交换机按端口划分 VLAN的配置方法;
  • 掌握Tag VLAN配置方法。

 

二、实验背景

某一公司内财务部、销售部的PC通过2台交换机实现通信;要求财务部和销售部内的PC可以互通,但为了数据安全起见,销售部和财务部需要进行隔离,现要在交换机上做适当配置来实现这一目的。

 

三、技术原理

  • VLAN是指在一个物理网段内,进行逻辑的划分,划分成若干个虚拟局域网。VLAN最大的特性是不受物理位置的限制,可以进行灵活的划分。VLAN具备了一个物理网段所具备的特性。相同VLAN内的主机可以相互直接通信,不同VLAN间的主机之间互相访问必须经由路由设备进行转发。广播数据包只可以在本VLAN内进行广播,不能传输到其他VLAN中。
  • Port VLAN是实现VLAN的方式之一,它利用交换机的端口进行VLAN的划分,一个端口只能属于一个VLAN。
  • Tag VLAN是基于交换机端口的另外一种类型,主要用于使交换机的相同VLAN内的主机之间可以直接访问,同时对于不同VLAN的主机进行隔离。Tag VLAN遵循IEEE802.1Q协议的标准。在使用配置了Tag VLAN的端口进行数据传输时,需要在数据帧内添加4个字节的802.1Q标签信息,用于标示该数据帧属于哪个VLAN,便于对端交换机收到数据帧后进行准确的过滤。

 

四、实验步骤

实验拓扑

1、设置四台PC机IP地址如图所示。

2、对交换机S1进行设置。

Switch>en
Switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#hostname S1                             //设置主机名
S1(config)#vlan 2                                      //划分VLAN 2
S1(config-vlan)#exit
S1(config)#vlan 3                                      //划分VLAN 3
S1(config-vlan)#exit
S1(config)#interface fa0/1
S1(config-if)#switchport access vlan 2                 //将fa0/1划分到VLAN 2
S1(config-if)#exit
S1(config)#interface fa0/2
S1(config-if)#switchport access vlan 3                 //将fa0/2划分到VLAN 3
S1(config-if)#exit
S1(config)#interface fa0/24                            //设置fa0/24端口模式为trunk
S1(config-if)#switchport mode trunk
S1(config-if)#end
S1#
%SYS-5-CONFIG_I: Configured from console by console

S1#show vlan                                           //查看VLAN划分情况

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/3, Fa0/4, Fa0/5, Fa0/6
                                                Fa0/7, Fa0/8, Fa0/9, Fa0/10
                                                Fa0/11, Fa0/12, Fa0/13, Fa0/14
                                                Fa0/15, Fa0/16, Fa0/17, Fa0/18
                                                Fa0/19, Fa0/20, Fa0/21, Fa0/22
                                                Fa0/23, Gig1/1, Gig1/2
2    VLAN0002                         active    Fa0/1
3    VLAN0003                         active    Fa0/2
1002 fddi-default                     act/unsup
1003 token-ring-default               act/unsup
1004 fddinet-default                  act/unsup
1005 trnet-default                    act/unsup

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 TranS1
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1    enet  100001     1500  -      -      -        -    -        0      0
2    enet  100002     1500  -      -      -        -    -        0      0
3    enet  100003     1500  -      -      -        -    -        0      0
1002 fddi  101002     1500  -      -      -        -    -        0      0   
1003 tr    101003     1500  -      -      -        -    -        0      0   
1004 fdnet 101004     1500  -      -      -        ieee -        0      0   
1005 trnet 101005     1500  -      -      -        ibm  -        0      0   

Remote SPAN VLANs
------------------------------------------------------------------------------


Primary Secondary Type              Ports
------- --------- ----------------- ------------------------------------------
S1#show running-config
Building configuration...

Current configuration : 1080 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname S1
!
!
!
interface FastEthernet0/1
 switchport access vlan 2
!
interface FastEthernet0/2
 switchport access vlan 3
!
interface FastEthernet0/3
!
......
!
interface FastEthernet0/24
 switchport mode trunk
!
interface GigabitEthernet1/1
!
interface GigabitEthernet1/2
!
interface Vlan1
 no ip address
 shutdown
!
!
line con 0
!
line vty 0 4
 login
line vty 5 15
 login
!
!
end


S1#

3、对交换机S2进行设置。

Switch>en
Switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#hostname S2
S2(config)#vlan 2
S2(config-vlan)#exit
S2(config)#vlan 3
S2(config-vlan)#exit
S2(config)#interface fa0/1
S2(config-if)#switchport access vlan 2
S2(config-if)#exit
S2(config)#interface fa0/2
S2(config-if)#switchport access vlan 3
S2(config-if)#exit
S2(config)#interface fa0/24
S2(config-if)#switchport mode trunk 
S2(config-if)#end
S2#
%SYS-5-CONFIG_I: Configured from console by console

S2#show vlan

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/3, Fa0/4, Fa0/5, Fa0/6
                                                Fa0/7, Fa0/8, Fa0/9, Fa0/10
                                                Fa0/11, Fa0/12, Fa0/13, Fa0/14
                                                Fa0/15, Fa0/16, Fa0/17, Fa0/18
                                                Fa0/19, Fa0/20, Fa0/21, Fa0/22
                                                Fa0/23, Gig1/1, Gig1/2
2    VLAN0002                         active    Fa0/1
3    VLAN0003                         active    Fa0/2
1002 fddi-default                     act/unsup 
1003 token-ring-default               act/unsup 
1004 fddinet-default                  act/unsup 
1005 trnet-default                    act/unsup 

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1    enet  100001     1500  -      -      -        -    -        0      0
2    enet  100002     1500  -      -      -        -    -        0      0
3    enet  100003     1500  -      -      -        -    -        0      0
1002 fddi  101002     1500  -      -      -        -    -        0      0   
1003 tr    101003     1500  -      -      -        -    -        0      0   
1004 fdnet 101004     1500  -      -      -        ieee -        0      0   
1005 trnet 101005     1500  -      -      -        ibm  -        0      0   

Remote SPAN VLANs
------------------------------------------------------------------------------


Primary Secondary Type              Ports
------- --------- ----------------- ------------------------------------------
S2#show running-config 
Building configuration...

Current configuration : 1080 bytes
!
version 12.2
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname S2
!
!
!
interface FastEthernet0/1
 switchport access vlan 2
!
interface FastEthernet0/2
 switchport access vlan 3
!
interface FastEthernet0/3
!
......
!
interface FastEthernet0/24
 switchport mode trunk
!
interface GigabitEthernet1/1
!
interface GigabitEthernet1/2
!
interface Vlan1
 no ip address
 shutdown
!
!
line con 0
!
line vty 0 4
 login
line vty 5 15
 login
!
!
end


S2#

 

五、验证

打开PC1的Command Prompt

Packet Tracer PC Command Line 1.0
PC>ipconfig

IP Address......................: 192.168.1.2
Subnet Mask.....................: 255.255.255.0
Default Gateway.................: 192.168.1.1

PC>ping 192.168.1.3

Pinging 192.168.1.3 with 32 bytes of data:

Request timed out.                            //不同VLAN间无法PING通
Request timed out.
Request timed out.
Request timed out.

Ping statistics for 192.168.1.3:
    Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),

 
PC>ping 192.168.1.4

Pinging 192.168.1.4 with 32 bytes of data:

Reply from 192.168.1.4: bytes=32 time=172ms TTL=128                //相同VLAN可以PING通
Reply from 192.168.1.4: bytes=32 time=78ms TTL=128
Reply from 192.168.1.4: bytes=32 time=63ms TTL=128
Reply from 192.168.1.4: bytes=32 time=79ms TTL=128

Ping statistics for 192.168.1.4:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 63ms, Maximum = 172ms, Average = 98ms
posted @ 2012-07-14 12:33  David_Tang  阅读(34494)  评论(6编辑  收藏  举报