交换基础 VLAN TRUNK VTP

一台交换机是一个广播域 一个交换机端口是一个冲突域两台交换机互连，每台交换机下有两台pc（路由器做交换机添加交换模块，路由器做pc关闭路由功能）第一台交换机下的pc1 f0/0:ip地址为192.168.10.1 vlan10，pc2 f0/0:192.168.20.1 vlan20，第二天交换机下的pc3 f0/0:ip地址为192.168.10.2 vlan10，pc4 f0/0:192.168.20.2 vlan20R3(config)#no ip routingR3(config)#int f0/0R3(config-if)#ip add 192.168.10.1 255.255.255.0R3(config-if)#no shutR3(config-if)#endR4(config)#no ip routingR4(config)#int f0/0R4(config-if)#ip add 192.168.20.1 255.255.255.0R4(config-if)#no shutR4(config-if)#endR5(config)#no ip routingR5(config)#int f0/0R5(config-if)#ip add 192.168.10.2 255.255.255.0R5(config-if)#no shutR5(config-if)#endR6(config)#no ip routingR6(config)#int f0/0R6(config-if)#ip add 192.168.20.2 255.255.255.0R6(config-if)#no shutR6(config-if)#endR1#vlan databaseR1(vlan)#vlan 10VLAN 10 added:    Name: VLAN0010R1(vlan)#vlan 20VLAN 20 added:    Name: VLAN0020R1(vlan)#exitR1#conf tR1(config)#int f0/0R1(config-if)#switchport mode accessR1(config-if)#switchport access vlan 10R1(config-if)#int f0/1R1(config-if)#switchport mode accessR1(config-if)#switchport access vlan 20R1(config-if)#endR1(config)#int f0/15R1(config-if)#switchport trunk encapsulation dot1qR1(config-if)#switchport mode trunkR1(config-if)#endR1#show vlan-s  真机用show vlan即可VLAN Name                             Status    Ports---- -------------------------------- --------- -------------------------------1    default                          active    Fa0/2, Fa0/3, Fa0/4, Fa0/5                                                Fa0/6, Fa0/7, Fa0/8, Fa0/9                                                Fa0/10, Fa0/11, Fa0/12, Fa0/13                                                Fa0/1410   VLAN0010                         active    Fa0/020   VLAN0020                         active    Fa0/11002 fddi-default                     active1003 token-ring-default               active1004 fddinet-default                  active1005 trnet-default                    activeVLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------1    enet  100001     1500  -      -      -        -    -        1002   100310   enet  100010     1500  -      -      -        -    -        0      020   enet  100020     1500  -      -      -        -    -        0      01002 fddi  101002     1500  -      -      -        -    -        1      10031003 tr    101003     1500  1005   0      -        -    srb      1      10021004 fdnet 101004     1500  -      -      1        ibm  -        0      01005 trnet 101005     1500  -      -      1        ibm  -        0      0R1#show interfaces trunk--查看trunk接口Port      Mode         Encapsulation  Status        Native vlanFa0/15    on           802.1q         trunking      1Port      Vlans allowed on trunkFa0/15    1-1005Port      Vlans allowed and active in management domainFa0/15    1,10,20Port      Vlans in spanning tree forwarding state and not prunedFa0/15    1,10,20R2#vlan databaseR2(vlan)#vlan 10VLAN 10 added:    Name: VLAN0010R2(vlan)#vlan 20VLAN 20 added:    Name: VLAN0020R2(vlan)#exitR2#conf tR2(config)#int f0/0R2(config-if)#switchport mode accessR2(config-if)#switchport access vlan 10R2(config-if)#int f0/1R2(config-if)#switchport mode accessR2(config-if)#switchport access vlan 20R2(config-if)#endR2(config)#int f0/15R2(config-if)#switchport trunk encapsulation dot1qR2(config-if)#switchport mode trunkR2(config-if)#end