CCNA实验一配置STP与VTP-阿里云开发者社区

拓扑图如下：

环境：三台交换机，形成一个全互连结构，都为为2950；

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：

Switch#show vlan

Switch#delete vlan.dat 清除vlan信息
Delete filename [vlan1.dat]?y
Delete flash:/y? [confirm]y%Error deleting flash:/y (No such file or directory)

Switch#show startup-config 显示配置信息

Switch#erase startup-config 清除配置信息

Switch#reload 重启

Switch>en
Switch#conf t
Switch(config)#hostname SW1 修改交换机名称
SW1(config)#NO IP DOMAin-lookup 关闭域名动态解析
SW1(config)#LINE CONSole 0
SW1(config-line)#LOGGing SYNChronous
SW1(config-line)#EXEC-timeout 0 0 设置超时为不超时

步骤一、配置VTP

sw3的配置：
sw3(config)#vtp mode server        在sw3上启用vtp server
Device mode already VTP SERVER.
sw3(config)#vtp domain cisco        设置域名
Changing VTP domain name from NULL to cisco
sw3(config)#vtp password cisco       设置密码
Setting device VLAN database password to cisco

sw1的配置:
sw1#vlan database          进入vlan数据库
sw1(vlan)#vtp client         启用VTP client模式
Setting device to VTP CLIENT mode.
sw1(vlan)#vtp domain cisco   作用到cisco域中
Changing VTP domain name from NULL to cisco
sw1(vlan)#vtp password cisco      设置密码与server端相同
Setting device VLAN database password to cisco.
sw1(vlan)#exit              使配置生效
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
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
sw1(config-if)#switchport mode trunk 启用trunk模式
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(config-if)#switchport trunk encapsulation dot1q
sw2(config-if)#switchport mode trunk

sw2(config)#interface fa0/24
sw2(config-if)#switchport trunk encapsulation dot1q
sw2(config-if)#switchport mode trunk

步骤三、测试vtp状态及创建vlan

sw3的状态：
sw3#show vtp status         显示vtp状态
VTP Version                     : 2
Configuration Revision          : 0         配置修订号
Maximum VLANs supported locally : 254 最大支持vlan数
Number of existing VLANs        : 5
VTP Operating Mode              : server vtp模式
VTP Domain Name                 : cisco vtp域名
VTP Pruning Mode                : Disabled
VTP V2 Mode                     : Disabled
VTP Traps Generation            : Disabled
MD5 digest                    : 0x3F 0x17 0xC8 0xB8 0x5A 0xE3 0x01 0x66
Configuration last modified by 0.0.0.0 at 0-0-00 00:00:00

创建vlan:
sw3(config)#vlan 10      创建VLAN10
sw3(config-vlan)#name aa 命名为aa
sw3(config-vlan)#exit    应用配置
sw3(config)#vlan 20      创建VLAN20
sw3(config-vlan)#name bb 命名为bb
sw3(config-vlan)#exit
sw3(config)#

sw3的状态：
sw3#show vtp status                    在sw3显示vtp的状态
VTP Version                     : 2
Configuration Revision          : 2    server的修订号
Maximum VLANs supported locally : 254
Number of existing VLANs        : 7   vlan也已经增加
VTP Operating Mode              : server
VTP Domain Name                 : cisco
VTP Pruning Mode                : Disabled
VTP V2 Mode                     : Disabled
VTP Traps Generation            : Disabled
MD5 digest                      : 0x98 0x31 0xCF 0xA0 0xA7 0x17 0x73 0x66
Configuration last modified by 0.0.0.0 at 3-1-93 00:52:05

sw2的状态：
sw2#show vtp status
VTP Version : 2
Configuration Revision : 2 已经同步了信号

Maximum VLANs supported locally : 254
Number of existing VLANs        : 7
VTP Operating Mode              : Client  vtp模式为客户端模式
VTP Domain Name                 : cisco
VTP Pruning Mode                : Disabled
VTP V2 Mode                     : Disabled
VTP Traps Generation            : Disabled
MD5 digest                      : 0x98 0x31 0xCF 0xA0 0xA7 0x17 0x73 0x66
Configuration last modified by 0.0.0.0 at 3-1-93 00:52:05

sw1的vlan信息:
sw1#show vlan           显示vlan信息
VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/1, Fa0/2, Fa0/3, Fa0/4,
                                                Fa0/5, Fa0/6, Fa0/7, Fa0/8,
                                                Fa0/9, Fa0/10, Fa0/11, Fa0/12,
                                                Fa0/13, Fa0/14, Fa0/15, Fa0/16,
                                                Fa0/17, Fa0/18, Fa0/19, Fa0/20,
                                                Fa0/21, Fa0/22, Fa0/23, Fa0/24
10 aa                             active      

20 bb active

步骤四、配置PVST
sw3(config)#spanning-tree vlan 1 root primary 设置为vlan1的根桥

Sw1(config)#spanning-tree vlan 10 priority 4096 设置为vlan10的根桥

Sw2(config)#spanning-tree vlan 20 priority 4096 设置为vlan20的根桥

步骤五、显示STP的信息

sw1的生成树信息:
sw1#show spanning-tree brief 显示每VLAN生成树信息

VLAN1
Spanning tree enabled protocol IEEE
ROOT ID    Priority 24577
             Address 0007.eb06.1740        
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32768
Address 0030.803d.f640

             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec
VLAN10
Spanning tree enabled protocol IEEE
ROOT ID    Priority 4096
             Address 0030.803d.f641        

This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority    4096
             Address     0030.803d.f641
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec
VLAN20
Spanning tree enabled protocol IEEE
ROOT ID    Priority 4096
             Address 00b0.645f.34c2          
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority    32768
             Address     0030.803d.f642
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec

sw2的生成树信息:
sw2#show spanning-tree brief 显示每vlan生成树配置

VLAN1
Spanning tree enabled protocol IEEE 

ROOT ID    Priority 24577
             Address 0007.eb06.1740
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority    32768
             Address     00b0.645f.34c0
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec

VLAN10
Spanning tree enabled protocol IEEE
ROOT ID    Priority 4096          
             Address 0030.803d.f641
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority    32768
             Address     00b0.645f.34c1
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec

VLAN20
Spanning tree enabled protocol IEEE
ROOT ID    Priority 4096         
             Address 00b0.645f.34c2
             This bridge is the root
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority    4096
             Address     00b0.645f.34c2
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec

sw3的生成树信息:
sw3#show spanning-tree

VLAN0001
Spanning tree enabled protocol ieee
Root ID    Priority    24577       为vlan1的根桥
             Address     0007.eb06.1740
             This bridge is the root
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority    24577 (priority 24576 sys-id-ext 1)
             Address     0007.eb06.1740
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec
             Aging Time 300

VLAN0010
Spanning tree enabled protocol ieee
Root ID    Priority    4096      
             Address     0030.803d.f641
             Cost        19
             Port        24 (FastEthernet0/24)
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority    32779 (priority 32768 sys-id-ext 11)
             Address     0007.eb06.1740
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec
             Aging Time 300

VLAN0020
Spanning tree enabled protocol ieee
Root ID    Priority    4096          
             Address     00b0.645f.34c2
             Cost        19
             Port        23 (FastEthernet0/23)
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority    32780 (priority 32768 sys-id-ext 12)
             Address     0007.eb06.1740
             Hello Time   2 sec Max Age 20 sec Forward Delay 15 sec
             Aging Time 300

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/23           Root FWD 19        128.23   P2p
Fa0/24           Altn BLK 19        128.24   P2p

步骤六、显示当前配置结果

Sw1的配置结果：
sw1#show running-config 显示当前配置结果
!
hostname sw1
!
spanning-tree vlan 10 priority 4096
！
no ip domain-lookup
!
interface FastEthernet0/23
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet0/24
switchport trunk encapsulation dot1q
switchport mode trunk
!
end

sw2的配置结果：
sw2#show running-config 显示当前配置结果

hostname sw2
！
spanning-tree vlan 20 priority 4096
!
no ip domain-lookup
!
interface FastEthernet0/23
switchport trunk encapsulation dot1q
switchport mode trunk

!
interface FastEthernet0/24
switchport trunk encapsulation dot1q
switchport mode trunk
!
end

sw3的配置结果：
sw3#show running-config 显示当前配置结果

!
hostname sw3
!
no ip domain-lookup
!
spanning-tree vlan 1 priority 24576
!
interface FastEthernet0/23
switchport mode trunk
!
interface FastEthernet0/24
switchport mode trunk
!
End

本文转自珏石头 51CTO博客，原文链接：http://blog.51cto.com/gavinshaw/134655，如需转载请自行联系原作者

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