实难拓朴:
 
 
 
 
实验目标:
 
 
1.设置SWITCH1、SWITCH3的优先级为1000
 
2.对比SWITCH2、SWITCH4的根端口
 
3.配置SWITCH1与SWITCH3之间的以太网通道
 
实验步骤:
 
 
目标1：<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

1．sw1(config)#spanning-tree vlan 1     启用生成树。

Sw2(config)#spanning-tree vlan 1

Sw2(config)#spanning-tree vlan 1

Sw2(config)#spanning-tree vlan 1

2．sw1(config)#spanning-tree vlan 1 priority 1000  设置SW1的优先级为1000

   Sw3(config)#spanning-tree vlan 1 priority 1000   设置SW3的优先级为1000

 
目标2：

1．         SW2 的根端口如下所示：

sw2#show spanning-tree br

*Mar  1 00:23:09.335: %SYS-5-CONFIG_I: Configured from console by console

sw2#show spanning-tree br

 

VLAN1

  Spanning tree enabled protocol ieee

  Root ID    Priority    1000

             Address     cc00.0420.0000

             Cost        31

             Port        2 (FastEthernet0/1)

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

 

  Bridge ID  Priority    32768

             Address     cc00.0324.0000

             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

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

FastEthernet0/1      128.2    128    19 FWD    12  1000 cc00.0460.0000 128.2  根端口

FastEthernet0/2      128.3    128    19 BLK    12  1000 cc00.0460.0000 128.3 

 

2．             SW4 的根端口如下所示：

 sw4#show spanning-tree br

 

VLAN1

  Spanning tree enabled protocol ieee

  Root ID    Priority    1000

             Address     cc00.0420.0000

             Cost        19

             Port        3 (FastEthernet0/2)

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

 

  Bridge ID  Priority    32768

             Address     cc00.0e78.0000

             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

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

FastEthernet0/1      128.2    128    19 BLK     0  1000 cc00.0420.0000 128.3 

FastEthernet0/2      128.3    128    19 FWD     0  1000 cc00.0420.0000 128.2  根端口。

 

 

 

目标3：

1．         SW1

sw1(config)#interface range f0/14 – 15     

sw1(config-if-range)#channel-group 1 mode on        （配置SW1上的f0/14 – 15为以太网通道）

Creating a port-channel interface Port-channel1

sw1(config-if-range)#

2．             SW3 同样的配置。

3．             验证：

     sw1#show spanning-tree br

 

VLAN1

  Spanning tree enabled protocol ieee

  Root ID    Priority    1000

             Address     cc00.0420.0000

             Cost        12

             Port        321 (Port-channel1)

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

 

  Bridge ID  Priority    1000

             Address     cc00.0460.0000

             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

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

FastEthernet0/1      128.2    128    19 FWD    12  1000 cc00.0460.0000 128.2 

FastEthernet0/2      128.3    128    19 FWD    12  1000 cc00.0460.0000 128.3 

Port-channel1        129.65   128    12 FWD     0  1000 cc00.0420.0000 129.65

  

 

sw3#show spanning-tree br

 

VLAN1

  Spanning tree enabled protocol ieee

  Root ID    Priority    1000

             Address     cc00.0420.0000

             This bridge is the root

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

 

  Bridge ID  Priority    1000

             Address     cc00.0420.0000

             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

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

FastEthernet0/1      128.2    128    19 FWD     0  1000 cc00.0420.0000 128.2 

FastEthernet0/2      128.3    128    19 FWD     0  1000 cc00.0420.0000 128.3 

Port-channel1        129.65   128    12 FWD     0  1000 cc00.0420.0000 129.65