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STP实验笔记

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STP实验

SWA

Switch>en Switch#conf t

Switch(config)#no ip do lookup

Switch(config)#no ip domain-lookup Switch(config)#lin con 0

Switch(config-line)#logging sy Switch(config-line)#exec-t 0 Switch(config-line)#exit //交换机基础设置

Switch(config)#ho SWA //交换机改名为SWA

SWA(config)#

SWA(config)#int r f0/22-24 SWA(config-if-range)#sw m tr SWA(config-if-range)#

SWA(config-if-range)#no shu SWA(config-if-range)#exit SWA(config)#int r f0/1 - 2 SWA(config-if-range)#sw m tr SWA(config-if-range)#

SWA(config-if-range)#no shu SWA(config-if-range)#exit

//设置端口22-24 和端口1-2为trunk 并激活端口

SWA(config)#vtp do abc SWA(config)#vtp m s

SWA(config)#vtp m server SWA(config)#vtp v 2

//设置vtp域名为abc 交换机A为vtp服务器 SWA(config)#vl 10

SWA(config-vlan)#na 10 SWA(config-vlan)#vl 20 SWA(config-vlan)#na 20 SWA(config-vlan)#vl 30 SWA(config-vlan)#na 30 SWA(config-vlan)#vl 40 SWA(config-vlan)#na 40 SWA(config-vlan)#exit

//建立vlan10 vlan20 vlan30 vlan40 四个vlan

SWA(config)#int vl 1

SWA(config-if)#ip add 192.168.1.100 255.255.255.0 SWA(config-if)#no shu SWA(config-if)# SWA(config-if)#exit

//设置交换机A的ip地址为 192.168.1.100 子网掩码为 255.255.255.0

SWA(config)#do sh vtp st do sh vtp st

VTP Version : 2 Configuration Revision : 9

Maximum VLANs supported locally : 1005 Number of existing VLANs : 10

VTP Operating Mode : Server VTP Domain Name : abc VTP Pruning Mode : Disabled VTP V2 Mode : Enabled VTP Traps Generation : Disabled

MD5 digest : 0x26 0xB8 0x3B 0xC2 0x33 0x47 0xBF 0xD1

Configuration last modified by 192.168.1.100 at 3-1-93 01:03:39

Local updater ID is 192.168.1.100 on interface Vl1 (lowest numbered VLAN interface found) //查看vtp信息

SWA(config)#do sh vl br

VLAN Name Status Ports ---- -------------------------------- --------- -------------------------------

1 default 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, Gig0/1

Gig0/2 10 10 active 20 20 active 30 30 active 40 40 active 1002 fddi-default active

1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active // 查看vlan信息

将22-24和1-2端口激活并设置成trunk 设置SWA为vpt 服务器

建立vl10 vl20 vl30 vl40

设置SWA ip:192.168.1.100 255.255.255.0

SWA(config)#spanning-tree vlan 10 root primary SWA(config)#do sh sp VLAN0001

Spanning tree enabled protocol ieee Root ID Priority 32769

Address 0002.4A2C.3908 Cost 19

Port 1(FastEthernet0/1)

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

Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 0010.11A2.9154

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Root FWD 19 128.1 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Altn BLK 19 128.24 P2p Fa0/2 Altn BLK 19 128.2 P2p

VLAN0010

Spanning tree enabled protocol ieee Root ID Priority 24586

Address 0010.11A2.9154 This bridge is the root

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

Bridge ID Priority 24586 (priority 24576 sys-id-ext 10) Address 0010.11A2.9154

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

Aging Time 20

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Desg FWD 19 128.1 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Desg LSN 19 128.24 P2p Fa0/2 Desg LSN 19 128.2 P2p

VLAN0020

Spanning tree enabled protocol ieee Root ID Priority 32788

Address 0002.4A2C.3908 Cost 19

Port 1(FastEthernet0/1)

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

Bridge ID Priority 32788 (priority 32768 sys-id-ext 20) Address 0010.11A2.9154

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Root FWD 19 128.1 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Altn BLK 19 128.24 P2p Fa0/2 Altn BLK 19 128.2 P2p

VLAN0030

Spanning tree enabled protocol ieee Root ID Priority 32798

Address 0002.4A2C.3908 Cost 19

Port 1(FastEthernet0/1)

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

Bridge ID Priority 32798 (priority 32768 sys-id-ext 30) Address 0010.11A2.9154

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Root FWD 19 128.1 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Altn BLK 19 128.24 P2p Fa0/2 Altn BLK 19 128.2 P2p

VLAN0040

Spanning tree enabled protocol ieee Root ID Priority 32808

Address 0002.4A2C.3908 Cost 19

Port 1(FastEthernet0/1)

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

Bridge ID Priority 32808 (priority 32768 sys-id-ext 40) Address 0010.11A2.9154

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

SWA(config)#spanning-tree vlan 20 root primary

//将在交换机A上修改vlan10 vlan20 的根网桥优先级,修改后SWA是vlan10 vlan20的根网桥

SWA(config)#in r f0/1 -2

SWA(config-if-range)#channel-group 1 mode on SWA(config-if-range)# SWA(config-if-range)#end //设置以太网通道 组号为1 SWA#

SWA#sh etherchannel summary

Flags: D - down P - in port-channel I - stand-alone s - suspended H - Hot-standby (LACP only) R - Layer3 S - Layer2

U - in use f - failed to allocate aggregator u - unsuitable for bundling w - waiting to be aggregated d - default port

Number of channel-groups in use: 1 Number of aggregators: 1

Group Port-channel Protocol Ports

------+-------------+-----------+----------------------------------------------

1 Po1(SU) PAgP Fa0/1(P) Fa0/2(P) SWA#

//查看以太网通道(P) : 代表成功 (D):代表失败 SWA(config)#do sh sp VLAN0001

Spanning tree enabled protocol ieee Root ID Priority 32769

Address 0002.4A2C.3908 Cost 9

Port 27(Port-channel 1)

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

Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 0010.11A2.9154

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Desg FWD 19 128.1 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Altn BLK 19 128.24 P2p Fa0/2 Desg FWD 19 128.2 P2p Po1 Root FWD 9 128.27 Shr

VLAN0010

Spanning tree enabled protocol ieee Root ID Priority 24586

Address 0010.11A2.9154 This bridge is the root

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

Bridge ID Priority 24586 (priority 24576 sys-id-ext 10) Address 0010.11A2.9154

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

Interface Role Sts Cost Prio.Nbr Type

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

Fa0/1 Desg FWD 19 128.1 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Desg FWD 19 128.24 P2p Fa0/2 Desg FWD 19 128.2 P2p Po1 Desg FWD 9 128.27 Shr

VLAN0020

Spanning tree enabled protocol ieee Root ID Priority 24596

Address 0002.4A2C.3908 Cost 9

Port 27(Port-channel 1)

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

Bridge ID Priority 24596 (priority 24576 sys-id-ext 20) Address 0010.11A2.9154

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Desg FWD 19 128.1 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Altn BLK 19 128.24 P2p Fa0/2 Desg FWD 19 128.2 P2p Po1 Root FWD 9 128.27 Shr

VLAN0030

Spanning tree enabled protocol ieee Root ID Priority 24606

Address 0002.4A2C.3908 Cost 9

Port 27(Port-channel 1)

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

Bridge ID Priority 32798 (priority 32768 sys-id-ext 30) Address 0010.11A2.9154

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

Interface Role Sts Cost Prio.Nbr Type

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

Fa0/1 Desg FWD 19 128.1 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Altn BLK 19 128.24 P2p Fa0/2 Desg FWD 19 128.2 P2p Po1 Root FWD 9 128.27 Shr

VLAN0040

Spanning tree enabled protocol ieee Root ID Priority 24616

Address 0002.4A2C.3908 Cost 9

Port 27(Port-channel 1)

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

Bridge ID Priority 32808 (priority 32768 sys-id-ext 40) Address 0010.11A2.9154

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Desg FWD 19 128.1 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Altn BLK 19 128.24 P2p Fa0/2 Desg FWD 19 128.2 P2p Po1 Root FWD 9 128.27 Shr

VLAN0050

Spanning tree enabled protocol ieee Root ID Priority 32818

Address 0002.4A2C.3908 Cost 9

Port 27(Port-channel 1)

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

Bridge ID Priority 32818 (priority 32768 sys-id-ext 50) Address 0010.11A2.9154

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

Interface Role Sts Cost Prio.Nbr Type

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

Fa0/1 Desg FWD 19 128.1 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Altn BLK 19 128.24 P2p Fa0/2 Desg FWD 19 128.2 P2p Po1 Root FWD 9 128.27 Shr //在后面又建立一个vlan50 查看所有的生成树 SWA#

设置vlan10 vlan20 的根网桥为SWA 设置以太网通道

SWB

Switch>en Switch#conf t

Switch(config)#ho SWB

SWB(config)#no ip domain lookup SWB(config)#lin con 0 SWB(config-line)#logg

SWB(config-line)#logging sy SWB(config-line)#exec-t 0 SWB(config-line)#exit SWB(config)#int r f0/22-24 SWB(config-if-range)#sw m tr SWB(config-if-range)#

SWB(config-if-range)#no shu SWB(config-if-range)#int r f0/1-2 SWB(config-if-range)#sw m tr SWB(config-if-range)#no shu SWB(config-if-range)#exit SWB(config)#

设置22-24和1-2端口激活并设置trunk 交换机基础配置

SWB(config)#vtp do abc SWB(config)#vtp m c SWB(config)#do sh vtp st

VTP Version : 2 Configuration Revision : 9

Maximum VLANs supported locally : 1005 Number of existing VLANs : 9

VTP Operating Mode : Client VTP Domain Name : abc

VTP Pruning Mode : Disabled VTP V2 Mode : Enabled VTP Traps Generation : Disabled

MD5 digest : 0x84 0x71 0xFA 0x24 0xBC 0xAE 0xE6 0x29

Configuration last modified by 192.168.1.100 at 3-1-93 00:14:19

SWB(config)#do sh vl br

VLAN Name Status Ports ---- -------------------------------- --------- -------------------------------

1 default 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, Gig0/1

Gig0/2 10 10 active 20 20 active 30 30 active 40 40 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active SWB(config)#

设置vtp为客户端 学习到vtp中 vlan信息

spanning-tree vl 30 root primary

SWB(config)#spanning-tree vl 40 root primary SWB(config)#do sh sp VLAN0001

Spanning tree enabled protocol ieee Root ID Priority 32769

Address 0002.4A2C.3908 This bridge is the root

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

Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 0002.4A2C.3908

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Desg FWD 19 128.1 P2p Fa0/2 Desg FWD 19 128.2 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Desg FWD 19 128.24 P2p

VLAN0010

Spanning tree enabled protocol ieee Root ID Priority 24586

Address 0010.11A2.9154 Cost 19

Port 1(FastEthernet0/1)

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

Bridge ID Priority 32778 (priority 32768 sys-id-ext 10) Address 0002.4A2C.3908

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Root FWD 19 128.1 P2p Fa0/2 Altn BLK 19 128.2 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Altn BLK 19 128.24 P2p

VLAN0020

Spanning tree enabled protocol ieee Root ID Priority 24596

Address 0002.4A2C.3908 This bridge is the root

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

Bridge ID Priority 24596 (priority 24576 sys-id-ext 20) Address 0002.4A2C.3908

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

Aging Time 20

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Desg FWD 19 128.1 P2p Fa0/2 Desg FWD 19 128.2 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Desg FWD 19 128.24 P2p

VLAN0030

Spanning tree enabled protocol ieee Root ID Priority 24606

Address 0002.4A2C.3908 This bridge is the root

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

Bridge ID Priority 24606 (priority 24576 sys-id-ext 30) Address 0002.4A2C.3908

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Desg FWD 19 128.1 P2p Fa0/2 Desg FWD 19 128.2 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Desg FWD 19 128.24 P2p

VLAN0040

Spanning tree enabled protocol ieee Root ID Priority 24616

Address 0002.4A2C.3908 This bridge is the root

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

Bridge ID Priority 24616 (priority 24576 sys-id-ext 40) Address 0002.4A2C.3908

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

Interface Role Sts Cost Prio.Nbr Type

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

Fa0/1 Desg FWD 19 128.1 P2p Fa0/2 Desg FWD 19 128.2 P2p Fa0/22 Desg FWD 19 128.22 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Desg FWD 19 128.24 P2p

SWB(config)#

设置vlan30 vlan40的根网桥为SWB 查看生成树

SWB(config)#in r f0/1 -2

SWB (config-if-range)#channel-group 1 mode on SWB (config-if-range)# SWB (config-if-range)#end //设置以太网通道 组号为1 SWB#

SWB#sh etherchannel summary

Flags: D - down P - in port-channel I - stand-alone s - suspended H - Hot-standby (LACP only) R - Layer3 S - Layer2

U - in use f - failed to allocate aggregator u - unsuitable for bundling w - waiting to be aggregated d - default port

Number of channel-groups in use: 1 Number of aggregators: 1

Group Port-channel Protocol Ports

------+-------------+-----------+----------------------------------------------

1 Po1(SU) PAgP Fa0/1(P) Fa0/2(P) SWB#

//查看以太网通道(P) : 代表成功 (D):代表失败

SWC Switch> Switch>en Switch#conf t

Switch(config)#ho SWC

SWC(config)#no ip domain lookup

SWC(config)#lin con 0

SWC(config-line)#logging sy SWC(config-line)#exec-t 0 SWC(config-line)#exit SWC(config)#int r f0/22-23 SWC(config-if-range)#sw m tr SWC(config-if-range)#no shu SWC(config-if-range)#exit SWC(config)#vtp do abc

Domain name already set to abc. SWC(config)#vtp m c SWC(config)#do sh vl br

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

10 10 active 20 20 active 30 30 active 40 40 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active SWC(config)#

设置22-23端口为trunk并激活 设置vtp为客户端 学习vlan信息

SWC SWC(config )#int r f0/1-20

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

SWC(config-if-range)#do sh sp VLAN0001

Spanning tree enabled protocol ieee Root ID Priority 32769

Address 0002.4A2C.3908 Cost 19

Port 23(FastEthernet0/23)

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

Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 0030.A342.7D15

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Desg FWD 19 128.1 P2p Fa0/22 Altn BLK 19 128.22 P2p Fa0/23 Root FWD 19 128.23 P2p

VLAN0010

Spanning tree enabled protocol ieee Root ID Priority 24586

Address 0010.11A2.9154 Cost 19

Port 22(FastEthernet0/22)

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

Bridge ID Priority 32778 (priority 32768 sys-id-ext 10) Address 0030.A342.7D15

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/22 Root FWD 19 128.22 P2p Fa0/23 Altn BLK 19 128.23 P2p

VLAN0020

Spanning tree enabled protocol ieee Root ID Priority 24596

Address 0002.4A2C.3908 Cost 19

Port 23(FastEthernet0/23)

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

Bridge ID Priority 32788 (priority 32768 sys-id-ext 20) Address 0030.A342.7D15

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/22 Altn BLK 19 128.22 P2p Fa0/23 Root FWD 19 128.23 P2p

VLAN0030

Spanning tree enabled protocol ieee Root ID Priority 24606

Address 0002.4A2C.3908 Cost 19

Port 23(FastEthernet0/23)

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

Bridge ID Priority 32798 (priority 32768 sys-id-ext 30) Address 0030.A342.7D15

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/22 Altn BLK 19 128.22 P2p Fa0/23 Root FWD 19 128.23 P2p

VLAN0040

Spanning tree enabled protocol ieee Root ID Priority 24616

Address 0002.4A2C.3908 Cost 19

Port 23(FastEthernet0/23)

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

Bridge ID Priority 32808 (priority 32768 sys-id-ext 40) Address 0030.A342.7D15

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/22 Altn BLK 19 128.22 P2p

Fa0/23 Root FWD 19 128.23 P2p

SWC(config-if-range)#spanning-tree uplinkfast

设置成1-20端口为速端口 设置速链路

查看生成树 检验:1、SWA 是vlan10和vlan20的根网桥吗 2、SWB是vlan30 vlan40的根网桥吗

SWD Switch> Switch>en Switch#conf t

Switch(config)#no ip domain lookup Switch(config)#lin con 0

Switch(config-line)#logging sy Switch(config-line)#exec-t 0 Switch(config-line)#exit Switch(config)#int r f0/22-23 Switch(config-if-range)#sw m tr Switch(config-if-range)#no shu Switch(config-if-range)#exit Switch(config)#vtp do abc Switch(config)#vtp m c Switch(config)#do sh vl br

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

10 10 active 20 20 active 30 30 active

40 40 active 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active Switch(config)#

设置22-23端口为trunk并激活 设置vtp为客户端 学习vlan信息

Switch(config)#do sh sp VLAN0001

Spanning tree enabled protocol ieee Root ID Priority 32769

Address 0002.4A2C.3908 Cost 19

Port 22(FastEthernet0/22)

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

Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 0060.3EC2.E1DA

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/1 Desg FWD 19 128.1 P2p Fa0/22 Root FWD 19 128.22 P2p Fa0/23 Altn BLK 19 128.23 P2p

VLAN0010

Spanning tree enabled protocol ieee Root ID Priority 24586

Address 0010.11A2.9154 Cost 19

Port 23(FastEthernet0/23)

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

Bridge ID Priority 32778 (priority 32768 sys-id-ext 10) Address 0060.3EC2.E1DA

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/22 Altn BLK 19 128.22 P2p Fa0/23 Root FWD 19 128.23 P2p

VLAN0020

Spanning tree enabled protocol ieee Root ID Priority 24596

Address 0002.4A2C.3908 Cost 19

Port 22(FastEthernet0/22)

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

Bridge ID Priority 32788 (priority 32768 sys-id-ext 20) Address 0060.3EC2.E1DA

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/22 Root FWD 19 128.22 P2p Fa0/23 Altn BLK 19 128.23 P2p

VLAN0030

Spanning tree enabled protocol ieee Root ID Priority 24606

Address 0002.4A2C.3908 Cost 19

Port 22(FastEthernet0/22)

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

Bridge ID Priority 32798 (priority 32768 sys-id-ext 30) Address 0060.3EC2.E1DA

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/22 Root FWD 19 128.22 P2p Fa0/23 Altn BLK 19 128.23 P2p

VLAN0040

Spanning tree enabled protocol ieee Root ID Priority 24616

Address 0002.4A2C.3908

Cost 19

Port 22(FastEthernet0/22)

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

Bridge ID Priority 32808 (priority 32768 sys-id-ext 40) Address 0060.3EC2.E1DA

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

Interface Role Sts Cost Prio.Nbr Type

---------------- ---- --- --------- -------- -------------------------------- Fa0/22 Root FWD 19 128.22 P2p Fa0/23 Altn BLK 19 128.23 P2p

Switch(config)#int r f0/1 - 20

Switch(config-if-range)#spanning-tree portfast Switch(config)#spanning-tree uplinkfast 设置成1-20端口为速端口 设置速链路

查看生成树 检验:1、SWA 是vlan10和vlan20的根网桥吗 2、SWB是vlan30 vlan40的根网桥吗

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