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2014年(29)

我的朋友

分类: 网络与安全

2014-03-04 15:34:15

一.实验环境

三台交换机,形成一个全互连结构,本实验所使用的三台交换机匀由路由器C2691添加NM-16ESW板卡。

本实验所使用GNS3模拟器模拟,与真实Cisco设备配置有少许不同之处!

二.实验要求

设置sw1为VTP server,设置sw2和sw3为VTP client,域名为cisco,密码为:cisco,在server创建vlan 10和vlan20;设置sw1为vlan1的根桥,sw2为vlan10的根桥,sw3为vlan20的根桥;

三.设备与拓扑

wKiom1MNZDOyN5JhAAB1EtmUpvQ067.jpg

四.技术描述

STP - Spanning Tree Protocol(生成树协议)

逻辑上断开环路,防止广播风暴的产生

当线路故障,阻塞接口被激活,恢复通信,起备份线路的作用

五.操作步骤

1/设备开机加电自检

2/基本配置

SW1#conf terminal                                                  进入特权模式

SW1(config)#no ip routing                                             关闭路由功能

同上,SW2,SW3也关闭了路由功能

3/配置VTP

配置VTP ServerSW1#conf terminal                                       进入特权模式

SW1(config)#vtp mode server                                           启用VTP Server

Device mode already VTP SERVER.

SW1(config)#vtp domain cisco                                          设置域名

Changing VTP domain name from NULL to cisco

SW1(config)#vtp password cisco                                        设置密码

Setting device VLAN database password to cisco

配置 VTP Client

SW2(config)#vtp mode client                                          启动 VTP Client

Setting device to VTP CLIENT mode.

SW2(config)#vtp domain cisco                                        设置域名

Changing VTP domain name from NULL to cisco

SW2(config)#vtp password cisco                                      设置密码

Setting device VLAN database password to cisco

SW3(config)#vtp mode client

Setting device to VTP CLIENT mode.

SW3(config)#vtp domain cisco

Changing VTP domain name from NULL to cisco

SW3(config)#vtp password cisco

Setting device VLAN database password to cisco

4/启动干道端口

SW1(config)#int fa 1/0                                               进入 fa 1/0接口

SW1(config-if)#switchport mode trunk                                  把模式改为干道模式

SW1(config-if)#switchport trunk encapsulationdot1q                      

SW1(config-if)#int fa 1/1

SW1(config-if)#switchport mode trunk

SW1(config-if)#switchport trunk encapsulationdot1q

SW2(config)#int fa1/0

SW2(config-if)#switchport mode trunk

SW2(config-if)#switchport trunk encapsulationdot1q

SW2(config-if)#int fa 1/2

SW2(config-if)#switchport mode trunk

SW2(config-if)#switchport trunk encapsulationdot1q

SW3(config)#int fa 1/2

SW3(config-if)#switchport mode trunk

SW3(config-if)#switchport trunk encapsulationdot1q

SW3(config-if)#int fa 1/1

SW3(config-if)#switchport mode trunk

SW3(config-if)#switchport trunk encapsulationdot1q

5/查看VTP状态(添加VLAN前)

SW1#show vtp status                                                 查看VTP状态

VTP Version                    : 2                                   版本最大支持个数

Configuration Revision          : 2                                     修定次数

Maximum VLANs supported locally : 36                                   最大支持VLAN数

Number of existing VLANs        : 5                                    已建立VLAN数

VTP Operating Mode              : Server                              VTP模式

VTP Domain Name                 : cisco                              VTP域名

VTP Pruning Mode                : Disabled                            VTP修剪

VTP V2 Mode                     : Disabled                           版本号2是否启动

VTP Traps Generation            : Disabled                              

MD5 digest                      : 0xDB 0xC9 0x79 0x040x1F 0x6C 0xCB 0x19

Configuration last modified by 0.0.0.0 at3-1-02 01:09:09

Local updater ID is 0.0.0.0 (no valid interfacefound)


SW2#show vtp status

VTP Version                     : 2

Configuration Revision          : 2

Maximum VLANs supported locally : 36

Number of existing VLANs        : 5

VTP Operating Mode              : Client

VTP Domain Name                 : cisco

VTP Pruning Mode                : Disabled

VTP V2 Mode                     : Disabled

VTP Traps Generation            : Disabled

MD5 digest                      : 0xDB 0xC9 0x79 0x040x1F 0x6C 0xCB 0x19

Configuration last modified by 0.0.0.0 at3-1-02 00:19:06


SW3#show vtp status

VTP Version                     : 2

Configuration Revision          : 2

Maximum VLANs supported locally : 36

Number of existing VLANs        : 5

VTP Operating Mode              : Client

VTP Domain Name                 : cisco

VTP Pruning Mode                : Disabled

VTP V2 Mode                     : Disabled

VTP Traps Generation            : Disabled

MD5 digest                      : 0xDB 0xC9 0x79 0x040x1F 0x6C 0xCB 0x19

Configuration last modified by 0.0.0.0 at3-1-02 00:19:06

6/在VTP Server 中添加VLAN信息

SW1#conf t

Enter configuration commands, one perline.  End with CNTL/Z.

SW1(config)#vlan 10                                                创建VLAN10

SW1(config-vlan)#vlan 20                                             创建VLAN20

7/查看VTP状态(添加VLAN后)

SW1#show vtp status

VTP Version                     : 2

Configuration Revision          : 4                                    修订号增加2

Maximum VLANs supported locally : 36

Number of existing VLANs        : 7

VTP Operating Mode              : Server

VTP Domain Name                 : cisco

VTP Pruning Mode                : Disabled

VTP V2 Mode                     : Disabled

VTP Traps Generation            : Disabled

MD5 digest                      : 0xB2 0x28 0x6A 0x320x85 0xFA 0x82 0xEA

Configuration last modified by 0.0.0.0 at3-1-02 02:27:13

Local updater ID is 0.0.0.0 (no valid interfacefound)


SW2#show vtp status

VTP Version                     : 2

Configuration Revision          : 4

Maximum VLANs supported locally : 36

Number of existing VLANs        : 7

VTP Operating Mode              : Client

VTP Domain Name                 : cisco

VTP Pruning Mode                : Disabled

VTP V2 Mode                     : Disabled

VTP Traps Generation            : Disabled

MD5 digest                      : 0xB2 0x28 0x6A 0x32 0x85 0xFA0x82 0xEA

Configuration last modified by 0.0.0.0 at3-1-02 02:27:13


SW3#show vtp status

VTP Version                     : 2

Configuration Revision          : 4

Maximum VLANs supported locally : 36

Number of existing VLANs        : 7

VTP Operating Mode              : Client

VTP Domain Name                 : cisco

VTP Pruning Mode                : Disabled

VTP V2 Mode                     : Disabled

VTP Traps Generation            : Disabled

MD5 digest                      : 0xB2 0x28 0x6A 0x320x85 0xFA 0x82 0xEA

Configuration last modified by 0.0.0.0 at3-1-02 02:27:13

8/查看VLAN信息

SW1#show vlan-s b


VLAN Name                             Status   Ports

---- -------------------------------- ----------------------------------------

1   default                         active    Fa1/2, Fa1/3, Fa1/4,Fa1/5

                                              Fa1/6, Fa1/7, Fa1/8, Fa1/9

                                               Fa1/10,Fa1/11, Fa1/12, Fa1/13

                                              Fa1/14, Fa1/15

10  VLAN0010                        active

20  VLAN0020                        active

1002 fddi-default                     act/unsup

1003 token-ring-default               act/unsup

1004 fddinet-default                  act/unsup

1005 trnet-default                    act/unsup


SW2#show vlan-s b


VLAN Name                             Status    Ports

---- -------------------------------- ----------------------------------------

1   default                         active    Fa1/1, Fa1/3, Fa1/4,Fa1/5

                                               Fa1/6, Fa1/7, Fa1/8, Fa1/9

                                              Fa1/10, Fa1/11, Fa1/12, Fa1/13

                                              Fa1/14, Fa1/15

10  VLAN0010                        active

20  VLAN0020                         active

1002 fddi-default                     act/unsup

1003 token-ring-default               act/unsup

1004 fddinet-default                  act/unsup

1005 trnet-default                    act/unsup


SW3#show vlan-s b


VLAN Name                             Status    Ports

---- -------------------------------- ----------------------------------------

1   default                         active    Fa1/0, Fa1/3, Fa1/4,Fa1/5

                                              Fa1/6, Fa1/7, Fa1/8, Fa1/9

                                              Fa1/10, Fa1/11, Fa1/12, Fa1/13

                                               Fa1/14, Fa1/15

10  VLAN0010                        active

20  VLAN0020                        active

1002 fddi-default                     act/unsup

1003 token-ring-default               act/unsup

1004 fddinet-default                  act/unsup

1005 trnet-default                    act/unsup

9/配置PVST

SW1(config)#spanning-tree vlan 1 root primary                                       设置为vlan1的根桥

% This switch is already the root of VLAN1spanning tree

VLAN 1bridge priority set to 8192

VLAN 1bridge max aging time unchanged at 20

VLAN 1bridge hello time unchanged at 2

VLAN 1bridge forward delay unchanged at 15


SW2(config)#spanning-tree vlan 10 root primary                                      设置为vlan10的根桥

VLAN 10bridge priority set to 8192

VLAN 10bridge max aging time unchanged at 20

VLAN 10bridge hello time unchanged at 2

VLAN 10bridge forward delay unchanged at 15


SW3(config)#spanning-tree vlan 20 root primary                                      设置为vlan20的根桥

VLAN 20bridge priority set to 8192

VLAN 20bridge max aging time unchanged at 20

VLAN 20bridge hello time unchanged at 2

VLAN 20bridge forward delay unchanged at 15

10/显示STP信息

SW1#show spanning-tree brief                         显示每个VLAN信息


VLAN1

Spanning tree enabled protocol ieee

 RootID    Priority    8192

           Address     c003.11c8.0000

           This bridge is the root

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec


 BridgeID  Priority    8192

           Address     c003.11c8.0000

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

            Aging Time 300


Interface                                   Designated

Name                 Port ID Prio Cost  Sts Cost Bridge ID            Port ID

-------------------- ------- ---- ----- -------- -------------------- -------

FastEthernet1/0      128.41  128    19 FWD     0 8192 c003.11c8.0000 128.41

FastEthernet1/1      128.42  128    19 FWD     0 8192 c003.11c8.0000 128.42



VLAN10

Spanning tree enabled protocol ieee

 RootID    Priority    8192

           Address     c004.11c8.0001

           Cost        19

           Port        41 (FastEthernet1/0)

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec


 BridgeID  Priority    32768

           Address     c003.11c8.0001

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

           Aging Time 300


Interface                                   Designated

Name                 Port ID Prio Cost  Sts Cost Bridge ID            Port ID

-------------------- ------- ---- ----- -------- -------------------- -------

FastEthernet1/0      128.41  128    19 FWD     0 8192 c004.11c8.0001 128.41

FastEthernet1/1      128.42  128    19 FWD    19 32768 c003.11c8.0001 128.42



VLAN20

Spanning tree enabled protocol ieee

 RootID    Priority    8192

           Address     c005.11c8.0002

           Cost        19

           Port        42 (FastEthernet1/1)

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec


 BridgeID  Priority    32768

           Address     c003.11c8.0002

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

           Aging Time 300


Interface                                   Designated

Name                 Port ID Prio Cost  Sts Cost Bridge ID            Port ID

-------------------- ------- ---- ----- -------- -------------------- -------

FastEthernet1/0      128.41  128    19 FWD    19 32768 c003.11c8.0002 128.41

FastEthernet1/1      128.42  128    19 FWD     0 8192 c005.11c8.0002 128.42



SW2#show spanning-tree brief


VLAN1

Spanning tree enabled protocol ieee

 RootID    Priority    8192

           Address     c003.11c8.0000

           Cost        19

           Port        41 (FastEthernet1/0)

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec


 BridgeID  Priority    32768

           Address     c004.11c8.0000

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

           Aging Time 300


Interface                                  Designated

Name                 Port ID Prio Cost  Sts Cost Bridge ID            Port ID

-------------------- ------- ---- ----- -------- -------------------- -------

FastEthernet1/0      128.41  128    19 FWD     0 8192 c003.11c8.0000 128.41

FastEthernet1/2      128.43  128    19 FWD    19 32768 c004.11c8.0000 128.43



VLAN10

Spanning tree enabled protocol ieee

 RootID    Priority    8192

           Address     c004.11c8.0001

           This bridge is the root

            Hello Time   2 sec Max Age 20 sec  Forward Delay 15sec


 BridgeID  Priority    8192

           Address     c004.11c8.0001

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

           Aging Time 300


Interface                                   Designated

Name                 Port ID Prio Cost  Sts Cost Bridge ID            Port ID

-------------------- ------- ---- ----- -------- -------------------- -------

FastEthernet1/0      128.41  128    19 FWD     0 8192 c004.11c8.0001 128.41

FastEthernet1/2      128.43  128    19 FWD     0 8192 c004.11c8.0001 128.43



VLAN20

Spanning tree enabled protocol ieee

 RootID    Priority    8192

           Address     c005.11c8.0002

           Cost        19

           Port        43 (FastEthernet1/2)

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec


 BridgeID  Priority    32768

           Address     c004.11c8.0002

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

           Aging Time 300


Interface                                   Designated

Name                 Port ID Prio Cost  Sts Cost Bridge ID            Port ID

-------------------- ------- ---- ----- -------- -------------------- -------

FastEthernet1/0      128.41  128    19 BLK    19 32768 c003.11c8.0002 128.41

FastEthernet1/2      128.43  128    19 FWD     0 8192 c005.11c8.0002 128.43


SW3#show spanning-tree bri


VLAN1

Spanning tree enabled protocol ieee

 RootID    Priority    8192

           Address     c003.11c8.0000

           Cost        19

           Port        42 (FastEthernet1/1)

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec


 BridgeID  Priority    32768

           Address     c005.11c8.0000

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

           Aging Time 300


Interface                                   Designated

Name                 Port ID Prio Cost  Sts Cost Bridge ID            Port ID

-------------------- ------- ---- ----- -------- -------------------- -------

FastEthernet1/1      128.42  128    19 FWD     0 8192 c003.11c8.0000 128.42

FastEthernet1/2      128.43  128    19 BLK    19 32768 c004.11c8.0000 128.43



VLAN10

Spanning tree enabled protocol ieee

 RootID    Priority    8192

           Address     c004.11c8.0001

           Cost        19

           Port        43 (FastEthernet1/2)

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec


 BridgeID  Priority    32768

           Address     c005.11c8.0001

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

           Aging Time 300


Interface                                   Designated

Name                 Port ID Prio Cost  Sts Cost Bridge ID            Port ID

-------------------- ------- ---- ----- -------- -------------------- -------

FastEthernet1/1      128.42  128    19 BLK    19 32768 c003.11c8.0001 128.42

FastEthernet1/2      128.43  128    19 FWD     0 8192 c004.11c8.0001 128.43



VLAN20

Spanning tree enabled protocol ieee

 RootID    Priority    8192

           Address     c005.11c8.0002

           This bridge is the root

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec


 BridgeID  Priority    8192

           Address     c005.11c8.0002

           Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

           Aging Time 300


Interface                                   Designated

Name                 Port ID Prio Cost  Sts Cost Bridge ID            Port ID

-------------------- ------- ---- ----- -------- -------------------- -------

FastEthernet1/1      128.42  128    19 FWD     0 8192 c005.11c8.0002 128.42

FastEthernet1/2      128.43  128    19 FWD     0 8192 c005.11c8.0002 128.43

六.实验结束

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