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这篇文章将为大家详细讲解有关服务器中如何配置三层交换机，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。
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实验拓扑：
实验目的：pc1、pc2、pc3、pc4、server-pt实现互通
实验需求：
pc1： ip地址：192.168.10.1
子网掩码：255.255.255.0
网关：192.168.10.254
pc2： ip地址：192.168.20.1
子网掩码：255.255.255.0
网关：192.168.20.254
pc3: ip地址：192.168.30.1
子网掩码：255.255.255.0
网关：192.168.30.254
pc4: ip地址：192.168.40.1
子网掩码：255.255.255.0
网关： 192.168.40.254
server-PT: ip地址：192.168.60.1
子网掩码：255.255.255.0
网关：192.168.60.254
实验步骤：
1.配置PC机
pc1
pc2
pc3
pc4
serve-pt
2.配置二层交换机
操作内容：
a、sw1和sw2分别创建vlan10、vlan20和vlan30、vlan40，并将端口加入到各自对应的vlan中，与PC机相连的端口设置access模式且允许各自所在vlan通过，其余端口创建trunk模式且允许所有vlan通过
b、sw3和sw4各自创建vlan10、vlan20、vlan30、vlan40，将所有端口创建trunk链路且允许所有vlan通过
sw1：
Switch>enable
Switch#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#hostname sw1
sw1(config)#vlan 10
sw1(config-vlan)#vlan 20
sw1(config-vlan)#exit
sw1(config)#interface fa0/1
sw1(config-if)#switchport mode access
sw1(config-if)#switchport access vlan 10
sw1(config-if)#exit
sw1(config)#interface fa0/2
sw1(config-if)#switchport mode access
sw1(config-if)#switchport access vlan 20
sw1(config-if)#exit
sw1(config)#interface fa0/3
sw1(config-if)#switchport mode trunk
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed
sw1(config-if)#switchport trunk allowed vlan all
sw1(config-if)#exit
sw1(config)#interface fa0/4
sw1(config-if)#switchport mode trunk
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/4, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/4, changed state to up
sw1(config-if)#switchport trunk allowed vlan all
sw1(config-if)#exit
sw1(config)#interface fa0/5
sw1(config-if)#switchport mode trunk
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/5, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/5, changed state to up
sw1(config-if)#switchport trunk allowed vlan all
sw1(config-if)#exit
sw1(config)#exit
sw1#write
sw2：
Switch>enable
Switch#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#hostname sw2
sw2(config)#vlan 30
sw2(config-vlan)#vlan 40
sw2(config-vlan)#exit
sw2(config)#interface fa0/1
sw2(config-if)#switchport mode access
sw2(config-if)#switchport access vlan 30
sw2(config-if)#exit
sw2(config)#interface fa0/2
sw2(config-if)#switchport mode access
sw2(config-if)#switchport access vlan 40
sw2(config-if)#exit
sw2(config)#interface fa0/3
sw2(config-if)#switchport mode trunk
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed
sw2(config-if)#switchport trunk allowed vlan all
sw2(config-if)#exit
sw2(config)#interface fa0/4
sw2(config-if)#switchport mode trunk
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/4, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/4, changed state to up
sw2(config-if)#switchport trunk allowed vlan all
sw2(config-if)#exit
sw2(config)#interface fa0/5
sw2(config-if)#switchport mode trunk
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/5, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/5, changed state to up
sw2(config-if)#switchport trunk allowed vlan all
sw2(config-if)#exit
sw2(config)#exit
sw2#write
sw3：
Switch>enable
Switch#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#hostname sw3
Switch>enable
Switch#configure
Configuring from terminal, memory, or network [terminal]?
Enter configuration commands, one per line. End with CNTL/Z.
sw3(config)#vlan 10
sw3(config-vlan)#vlan 20
sw3(config-vlan)#vlan 30
sw3(config-vlan)#vlan 40
sw3(config-vlan)#exit
sw3(config)#interface fa0/1
sw3(config-if)#switchport mode trunk
sw3(config-if)#switchport trunk allowed vlan all
sw3(config-if)#exit
sw3(config)#int fa0/2
sw3(config-if)#switchport mode trunk
sw3(config-if)#switchport trunk allowed vlan all
sw3(config-if)#exit
sw3(config)#interface fa0/3
sw3(config-if)#switchport mode trunk
sw3(config-if)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed
sw3(config-if)#switchport trunk allowed vlan all
sw3(config-if)#exit
sw3#write
sw4：
Switch>enable
Switch#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#hostname sw4
sw4(config)#vlan 10
sw4(config-vlan)#vlan 20
sw4(config-vlan)#vlan 30
sw4(config-vlan)#vlan 40
sw4(config-vlan)#exit
sw4(config)#interface fa0/1
sw4(config-if)#switchport mode trunk
sw4(config-if)#switchport trunk allowed vlan all
sw4(config-if)#exit
sw4(config)#int fa0/2
sw4(config-if)#switchport mode trunk
sw4(config-if)#switchport trunk allowed vlan all
sw4(config-if)#exit
sw4(config)#interface fa0/3
sw4(config-if)#switchport mode trunk
sw4(config-if)#
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed state to down
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/3, changed
sw4(config-if)#switchport trunk allowed vlan all
sw4(config-if)#exit
sw4#write
3.配置三层交换机
操作内容：
创建vlan10、vlan20、vlan30、vlan40，创建虚拟端口并设置网关,fa0/3设置ip地址及子网掩码，开启路由功能，配置下一跳到192.168.60.0网段
Switch>en
Switch#configure
Configuring from terminal, memory, or network [terminal]?
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#ip routing
Switch(config)#vlan 10
Switch(config-vlan)#vlan 20
Switch(config-vlan)#vlan 30
Switch(config-vlan)#vlan 40
Switch(config-vlan)#exit
Switch(config)#int vlan 10
Switch(config-if)#
%LINK-5-CHANGED: Interface Vlan10, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, changed state to up
Switch(config-if)#no shutdown
Switch(config-if)#ip address 192.168.10.254 255.255.255.0
Switch(config-if)#exit
Switch(config)#int vlan 20
%LINK-5-CHANGED: Interface Vlan20, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan20, changed state to up
Switch(config-if)#no shutdown
Switch(config-if)#ip address 192.168.20.254 255.255.255.0
Switch(config-if)#exit
Switch(config)#int vlan 30
Switch(config-if)#
%LINK-5-CHANGED: Interface Vlan30, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan30, changed state to up
Switch(config-if)#no shutdown
Switch(config-if)#ip address 192.168.30.254 255.255.255.0
Switch(config-if)#exit
Switch(config)#int vlan 40
%LINK-5-CHANGED: Interface Vlan40, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan40, changed state to up
Switch(config-if)#no shutdown
Switch(config-if)#ip address 192.168.40.254 255.255.255.0
Switch(config-if)#exit
Switch(config)#interface fa0/3
Switch(config-if)#no switchport
Switch(config-if)#no shutdown
Switch(config-if)#ip address 192.168.50.1 255.255.255.0
Switch(config-if)#exit
Switch(config)#ip route 192.168.60.0 255.255.255.0 192.168.50.2
Switch(config)#exit
Switch#
%SYS-5-CONFIG_I: Configured from console by console
Switch#write
4.配置路由器
操作内容:配置端口的IP及子网掩码，配置默认路由
Router>en
Router#configure
Configuring from terminal, memory, or network [terminal]?
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#interface fastEthernet 0/1
%Invalid interface type and number
Router(config)#interface gigabitEthernet 0/0
Router(config-if)#no shutdown
%LINK-5-CHANGED: Interface GigabitEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to up
Router(config-if)#ip address 192.168.50.2 255.255.255.0
Router(config)#interface gigabitEthernet 0/1
Router(config-if)#no shutdown
%LINK-5-CHANGED: Interface GigabitEthernet0/1, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed state to up
Router(config-if)#ip address 192.168.60.254 255.255.255.0
Router(config-if)#exit
Router(config)#ip route 0.0.0.0 0.0.0.0 192.168.50.1
Router(config)#exit
%SYS-5-CONFIG_I: Configured from console by console
Router#write
验证与测试：
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