思科pvst实现流量负载均衡

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老赵网络 2018-05-10 23:45:43 ©著作权

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1、根据拓扑配置PC地址为192.168.1.1-192.168.1.4 2、配置下方的交换机交换机创建vlan 10 20 Switch(config)#vlan 10 Switch(config)#vlan 20 把交换机相连的接口改成trunk Switch(config)#Interface range f0/1-2 Switch(config-if)Switchport mode trunk Switch(config-if)exit 接口划入vlan Switch(config)#interface f0/3 Switch(config-if)#switchport access vlan 10 Switch(config-if)#interface f0/4 Switch(config-if)#switchport access vlan 20 Switch(config-if)# 2、配置左上方的交换机交换机创建vlan 10 20 Switch(config)#vlan 10 Switch(config)#vlan 20 把交换机相连的接口改成trunk Switch(config)#Interface range f0/1-2 Switch(config-if)Switchport mode trunk Switch(config-if)exit 接口划入vlan Switch(config)#interface f0/3 Switch(config-if)#switchport access vlan 10 Switch(config-if)#interface f0/4 Switch(config-if)#switchport access vlan 20 配置此交换机为vlan 10的根，vlan 20的备份 witch(config)#spanning-tree vlan 10 root primary Switch(config)#spanning-tree vlan 20 root secondary

4、右上方的交换机配置交换机创建vlan 10 20 Switch(config)#vlan 10 Switch(config)#vlan 20 把交换机相连的接口改成trunk Switch(config)#Interface range f0/1-2 Switch(config-if)Switchport mode trunk Switch(config-if)exit 配置此交换机为vlan 20的根，vlan 10的备份 switch(config)#spanning-tree vlan 20 root primary Switch(config)#spanning-tree vlan 10 root secondary

5、可以用show spanning-tree Switch#show spanning-tree VLAN0001 Spanning tree enabled protocol ieee Root ID Priority 32769 Address 000A.F37D.977E Cost 19 Port 2(FastEthernet0/2) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 000D.BD52.1362 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 Root FWD 19 128.2 P2p

VLAN0010 Spanning tree enabled protocol ieee Root ID Priority 24586 Address 000D.BD52.1362 ** 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 000D.BD52.1362 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 Fa0/3 Desg FWD 19 128.3 P2p

VLAN0020 Spanning tree enabled protocol ieee Root ID Priority 24596 Address 000A.F37D.977E Cost 19 Port 2(FastEthernet0/2) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Bridge ID Priority 28692 (priority 28672 sys-id-ext 20) Address 000D.BD52.1362 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 Root FWD 19 128.2 P2p Fa0/4 Desg FWD 19 128.4 P2p

可以抓包看VLAN10和VLAN20 的流量走向，VLAN10 走左边，VLAN20 走右边