生成树协议

拓扑图：

SwA的配置

Switch>en

Switch#conf

Configuring from terminal, memory, or network [terminal]?

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)#int ra fa0/1-4

Switch(config-if-range)#sw

Switch(config-if-range)#switchport mod

Switch(config-if-range)#switchport mode tr

Switch(config-if-range)#switchport mode tru

把端口设为

truck

模式

% Unrecognized command

<1-6> Channel group number

Switch(config-if-range)#channel-group 1

Switch(config-if-range)#channel-group 1 mode

Switch(config-if-range)#channel-group 1 mode on

Switch(config-if-range)#channel-group 1 mode on

Switch#vlan database

Switch(vlan)#vlan 2

VLAN 2 added:

Name: VLAN0002

Switch(vlan)#vlan 3

VLAN 3 added:

Name: VLAN0003

Switch(vlan)#vlan 4

VLAN 4 added:

Name: VLAN0004

Switch(vlan)#

Switch(vlan)#vtp server

Device mode already VTP SERVER.

Switch(vlan)#vtp

Switch(vlan)#vtp do

Switch(vlan)#vtp domain hong

Changing VTP domain name from NULL to hong

Switch(vlan)#vtp

Switch(vlan)#vtp pas

Switch(vlan)#vtp password hong

Setting device VLAN database password to hong

Switch>en

Switch#conf

Configuring from terminal, memory, or network [terminal]?

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)#sp

Switch(config)#spanning-tree vlan 2 root

Switch(config)#spanning-tree vlan 2 root pri

Switch(config)#spanning-tree vlan 2 root primary

把

vlan 2

设为桥根

Switch(config)#spanning-tree vlan 1 root primary

把

vlan 1

设为桥根

Switch(config)#end

Switch#

SWA#show spanning-tree summary

Root bridge for: VLAN1, VLAN2.

SWB的配置

Switch>

Switch>en

Switch#conf

Switch(config)#int ra fa0/1-4

Switch(config-if-range)#sw

Switch(config-if-range)#switchport mod

Switch(config-if-range)#switchport mode tr

Switch(config-if-range)#

Switch(config-if-range)#ch

Switch(config-if-range)#channel-g

Switch(config-if-range)#channel-group 1 mod

Switch(config-if-range)#channel-group 1 mode on

Switch(vlan)#vtp se

Switch(vlan)#vtp server

Device mode already VTP SERVER.

Switch(vlan)#vtp do

Switch(vlan)#vtp domain hong

Domain name already set to hong.

Switch(vlan)#vtp pa

Switch(vlan)#vtp password

% Incomplete command.

Switch(vlan)#vtp password hong

Setting device VLAN database password to hong

Switch(vlan)#

Switch>en

Switch#conf

Configuring from terminal, memory, or network [terminal]?

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)#sp

Switch(config)#spanning-tree vlan

Switch(config)#spanning-tree vlan 3 ro

Switch(config)#spanning-tree vlan 3 root pri

Switch(config)#spanning-tree vlan 3 root primary

Switch(config)#spanning-tree vlan 4 root primary

Switch(config)#end

Switch#

SWB#show spanning-tree summary

Root bridge for: VLAN3, VLAN4.

SWC的配置

Switch(config)#int ra fa0/1-2

Switch(config-if-range)#sw

Switch(config-if-range)#switchport mod

Switch(config-if-range)#switchport mode tr

Switch(config-if-range)#switchport mode trunk

Switch(config-if-range)#end

Switch#

Switch(vlan)#vtp cl

Switch(vlan)#vtp client

Setting device to VTP CLIENT mode.

Switch(vlan)#vtp do

Switch(vlan)#vtp domain hong

Domain name already set to hong.

Switch(vlan)#vtp pas

Switch(vlan)#vtp password hong

Setting device VLAN database password to hong

Switch(vlan)#

Switch(config)#int fa0/3

Switch(config-if)#sw

Switch(config-if)#switchport ac

Switch(config-if)#switchport access vlan 2

Switch(config-if)#int ra fa0/1-13

Switch(config-if-range)#spa

Switch(config-if-range)#spanning-tree por

Switch(config-if-range)#spanning-tree portfast

SWD的配置

Switch>

Switch>en

Switch#conf

Configuring from terminal, memory, or network [terminal]?

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)#int ra fa0/1-2

Switch(config-if-range)#sw

Switch(config-if-range)#switchport mod

Switch(config-if-range)#switchport mode tr

Switch(config-if-range)#switchport mode trunk

Switch(config-if-range)#end

Switch#

Switch#vlan database

% Warning: It is recommended to configure VLAN from config mode,

as VLAN database mode is being deprecated. Please consult user

documentation for configuring VTP/VLAN in config mode.

Switch(vlan)#vtp cl

Switch(vlan)#vtp client

Setting device to VTP CLIENT mode.

Switch(vlan)#vtp do

Switch(vlan)#vtp domain hong

Domain name already set to hong.

Switch(vlan)#vtp pas

Switch(vlan)#vtp password hong

Setting device VLAN database password to hong

Switch(vlan)#end

Switch#sho vtp status

VTP Version: 2

Configuration Revision: 3

Maximum VLANs supported locally : 255

Number of existing VLANs: 8

VTP Operating Mode: Client

VTP Domain Name: hong

VTP Pruning Mode: Disabled

VTP V2 Mode: Disabled

VTP Traps Generation: Disabled

MD5 digest: 0x4F 0x23 0x6C 0x94 0xF8 0x68 0x79 0xF1

Configuration last modified by 0.0.0.0 at 3-1-93 00:17:28

Switch#

Switch#sho vlan bri

Switch#sho vlan brief

VLAN NameStatus    Ports

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

1default                          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, Fa0/24, Gig1/1, Gig1/2

2VLAN0002                         active

3VLAN0003                         active

4VLAN0004                         active

1002 fddi-defaultactive

1003 token-ring-defaultactive

1004 fddinet-defaultactive

1005 trnet-defaultactive

Switch#

Switch(config)#int fa0/3

Switch(config-if)#sw

Switch(config-if)#switchport ac

Switch(config-if)#switchport access vlan 2

Switch(config-if)#int ra fa0/1-13

Switch(config-if-range)#spa

Switch(config-if-range)#spanning-tree por

Switch(config-if-range)#spanning-tree portfast