交换机配置STP与VTP.docx

配置STP与VTP
环境:三台交换机,形成一个全互连结构,sw3为2950,sw1和sw2为2900xl;
要求:设置sw3为VTP server,设置sw1和sw2为VTP client,域名为cisco,密码为:cisco,在server创建vlan 10(name:aa)和vlan20(name:bb);设置sw3为vlan1的根桥,sw1为vlan10的根桥,sw2为vlan20的根桥;
初始化配置:
查看vlan信息àSw#show vlan
Sw#Delete 用此命令将vlan删除à
查看一下NVRAM是否保存了配置àSw#show startup-config
Sw#erase 清空配置文件àstartup-config
重新启动交换机àSw#reload
sw>enable
sw#config terminal
sw(config)#hostname sw1
sw1(config)#no ip domain-lookup 关闭域名查找à
sw1(config)#line console 0
sw1(config-line)#logging synchronous 命令输入达到同步à
sw1(config-line)#exec-timeout 0 0 设置永不超时à
sw1(config-line)#exit
步骤一、配置VTP
sw3的配置:
在sw3上启用vtpàsw3(config)#vtp mode server server
Device mode already VTP SERVER.
sw3(config)#vtp domain cisco 设置域名à
Changing VTP domain name from NULL to cisco
sw3(config)#vtp password 设置密码àcisco
Setting device VLAN database password to cisco
sw1的配置:
进入vlan数据库àsw1#vlan database
sw1(vlan)#vtp 启用VTP client模式àclient
Setting device to VTP CLIENT mode.
sw1(vlan)#vtp 作用到cisco域中àdomain cisco
Changing VTP domain name from NULL to cisco
设置密码与server端相同àsw1(vlan)#vtp password cisco
Setting device VLAN database password to cisco.
使配置生效àsw1(vlan)#exit
In CLIENT state, no apply attempted.
Exiting....
sw2的配置:
sw2#vlan database
sw2(vlan)#vtp client
Setting device to VTP CLIENT mode.
sw2(vlan)#vtp domain cisco
Changing VTP domain name from NULL to cisco
sw2(vlan)#vtp password cisco
Setting device VLAN database password to cisco.
sw2(vlan)#exit
sw2#
步骤二、启用干道端口
sw3的配置:
sw3(config)#interface fa0/23
sw3(config-if)#switchport mode trunk 启用trunk端口à
sw3(config-if)#interface fa0/24
sw3(config-if)#switchport mode trunk
sw1的配置:
sw1(config)#interface fa0/23
sw1(config-if)#switchport trunk encapsulation dot1q 封装干道协议à
sw1(config-if)#switchport mode trunk 启用trunk模式à
sw1(config-if)#
sw1(config)#interface fa0/24
sw1(config-if)#switchport trunk encapsulation dot1q
sw1(config-if)#switchport mode trunk
sw2的配置:
sw2(config)#interface fa0/23
sw2(co