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这上面是老师网络拓扑图，下面是我的

首先我们先要吧三个主机配置上静态IP，虽然这个实验需要配置DHCP，配置静态IP方便我们检查配置过程中的错误，在配置过程中可以吧不用的端口down掉，方便观看拓扑

第一步 配置vlan

现在可以吧LSW3的，002,003,005，006都down掉，其他的交换机也一样，down掉没用的

LSW1

interface Ethernet0/0/1port link-type accessport default vlan 10interface Ethernet0/0/2port link-type accessport default vlan 20interface GigabitEthernet0/0/1port link-type trunkport trunk allow-pass vlan 10 20 30

LSW3（这里把链路聚合一起配了）

vlan batch 10 20 30interface Vlanif10ip address 10.0.10.254 255.255.255.0interface Vlanif20ip address 10.0.20.254 255.255.255.0interface Vlanif30ip address 10.0.30.254 255.255.255.0interface Eth-Trunk1port link-type trunkport trunk allow-pass vlan 10 20 30mode lacp-staticinterface GigabitEthernet0/0/1port link-type trunkport trunk allow-pass vlan 10 20 30

LSW2

vlan batch 10 20 30interface Ethernet0/0/1port link-type accessport default vlan 10interface GigabitEthernet0/0/2port link-type trunkport trunk allow-pass vlan 10 20 30

LSW4

vlan batch 10 20 30interface Vlanif10ip address 10.0.10.254 255.255.255.0interface Vlanif20ip address 10.0.20.254 255.255.255.0interface Vlanif30ip address 10.0.30.254 255.255.255.0interface Eth-Trunk1port link-type trunkport trunk allow-pass vlan 10 20 30mode lacp-staticinterface GigabitEthernet0/0/2port link-type trunkport trunk allow-pass vlan 10 20 30

第二步配置链路聚合

(上面已经配完了)

第三步配置STP

LSW4

stp mode stp
stp priority 4096

LSW1

stp mode stp

LSW2

stp mode stp

LSW3

stp mode stp
stp priority 0

第四步配置DHCP

LSW3

dhcp enableinterface Vlanif10dhcp select interfaceinterface Vlanif20dhcp select interface

第五步配置服务

LSW3

interface GigabitEthernet0/0/6port link-type trunkport trunk allow-pass vlan 10 20 30

LSW6

vlan batch 10 20 30interface Ethernet0/0/1port link-type accessport default vlan 30interface Ethernet0/0/2port link-type accessport default vlan 30interface GigabitEthernet0/0/1port link-type trunkport trunk allow-pass vlan 10 20 30

第六步配置OSPF

AR1

interface Serial1/0/0link-protocol pppip address 100.0.12.1 255.255.255.252 interface GigabitEthernet0/0/0ip address 100.0.1.2 255.255.255.252 interface GigabitEthernet0/0/1ip address 100.0.1.6 255.255.255.252 interface GigabitEthernet2/0/0ip address 100.0.23.1 255.255.255.252 ospf 1 area 0.0.0.0 network 100.0.1.0 0.0.0.3 network 100.0.1.4 0.0.0.3 network 100.0.12.0 0.0.0.3 network 100.0.23.0 0.0.0.3 

AR2

interface Serial2/0/0link-protocol pppip address 100.0.12.2 255.255.255.252 interface GigabitEthernet0/0/0ip address 100.0.24.1 255.255.255.252ospf 1 area 0.0.0.0 network 100.0.12.0 0.0.0.3 network 100.0.24.0 0.0.0.3 

AR3

interface GigabitEthernet0/0/0ip address 100.0.23.2 255.255.255.252 interface GigabitEthernet0/0/1ip address 100.0.34.1 255.255.255.252 ospf 1 area 0.0.0.0 network 100.0.23.0 0.0.0.3 network 100.0.34.0 0.0.0.3 

AR4

interface GigabitEthernet0/0/0ip address 100.0.34.2 255.255.255.252 interface GigabitEthernet0/0/1ip address 100.0.24.2 255.255.255.252 interface GigabitEthernet2/0/0ip address 192.168.1.1 255.255.255.0 interface GigabitEthernet2/0/1ip address 192.168.2.1 255.255.255.0 ospf 1 area 0.0.0.0 network 100.0.24.0 0.0.0.3 network 100.0.34.0 0.0.0.3 network 192.168.1.0 0.0.0.255 network 192.168.2.0 0.0.0.255 

第七步配置三层交换机和路由器相连

LSW4

interface Vlanif1ip address 100.0.1.5 255.255.255.252ip route-static 0.0.0.0 0.0.0.0 100.0.1.6

LSW3

interface Vlanif1ip address 100.0.1.1 255.255.255.252ip route-static 0.0.0.0 0.0.0.0 100.0.1.2