组网三层交换机配置

Posted 2022-12-12 阿呆攻防

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三层交换机的配置

实验拓扑

实验目的

(1)深入了解三层机哦啊还击的功能、特点及工作原理

(2)掌握三层交换机实现路由功能的方法

实验步骤

三层机交换机实际上是具有路由功能的交换机。

通过vlan ip做网关，实现不同vlan的路由

在交换机上先建两个vlan，分别为vlan2和vlan3，将F0/1放入vlan2，将F0/2放入vlan3，再设置vlan2和vlan3的IP地址

Switch>en
Switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#vlan 2
Switch(config-vlan)#name vlan2
Switch(config-vlan)#exit
Switch(config)#vlan 3 
Switch(config-vlan)#name vlan3
Switch(config-vlan)#int f0/1
Switch(config-if)#switchport mode access
Switch(config-if)#switchport access vlan 2
Switch(config-if)#int f0/2
Switch(config-if)#switchport mode access
Switch(config-if)#switchport access vlan 3
Switch(config-if)#exit
Switch(config)#int vlan2
Switch(config-if)#ip address 192.168.1.2 255.255.255.0
Switch(config-if)#int vlan3
Switch(config-if)#ip address 192.168.2.2 255.255.255.0
Switch(config-if)#exit
Switch(config)#ip routing(开启三层路由模式)
Switch(config)#end

PC1 Ping 通PC2，三层交换配置正确

通设置端口的三层工作模式实现不同网络的路由

端口为三层模式，实际上是通过no switchport关闭交换机端口的二层功能，再设端口的IP地址，但是这一功能只有三层交换机才有。

Switch>en
Switch#conf t
Switch(config)#int f0/1
Switch(config-if)#no switchport
Switch(config-if)#
Switch(config-if)#ip address 192.168.1.2 255.255.255.0
Switch(config-if)#exit
Switch(config)#int f0/2
Switch(config-if)#no switchport
Switch(config-if)#
Switch(config-if)#ip address 192.168.2.2 255.255.255.0
Switch(config-if)#exit
Switch(config)#ip routing

三层、二层交换机联合配置

用3560做路由，2960做二层交换机，通过虚拟网干协议（VTP）功能将三层机交换机VLAN传到下层

（1）交换机2960配置为vtp clinent（VTP客户机），vtp domain（VTP域）为abc

Switch>en
Switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch#vlan database
% Warning: It is recommended to configure VLAN from config mode,
  as VLAN database mode is being deprecated. Please consult user
  documentation for configuring VTP/VLAN in config mode.

Switch(vlan)#vtp domain abc
Domain name already set to abc.
Switch(vlan)#vtp client
Setting device to VTP CLIENT mode.
Switch(vlan)#exit
APPLY completed.
Exiting....
Switch#

(2)交换机2960的F0/4接口配置为trunk

Switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#int f0/3
Switch(config-if)#switchport mode trunk
Switch(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 state to up

(3)交换机2960的端口划分

Switch(config)#int f0/1
Switch(config-if)#switchport access vlan 2
Switch(config-if)#exit
Switch(config)#int f0/2
Switch(config-if)#switchport access vlan 3
Switch(config-if)#

(4)交换机3560配置为vtp Server（VTP服务器），vtp domain（VTP域）为abc

Switch>en
Switch#vlan database
% Warning: It is recommended to configure VLAN from config mode,
  as VLAN database mode is being deprecated. Please consult user
  documentation for configuring VTP/VLAN in config mode.
Switch(vlan)#vtp domain abc
Domain name already set to abc.
Switch(vlan)#vtp server
Device mode already VTP SERVER.
Switch(vlan)#exit
APPLY completed.
Exiting....
Switch#

(5)交换机3560的接口配置为trunk

Switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#int f0/1
Switch(config-if)#switchport mode trunk

(6)交换机3560创建vlan和设置vlan的IP地址

Switch#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch(config)#int vlan 2
Switch(config-if)#
%LINK-5-CHANGED: Interface Vlan2, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan2, changed state to up

Switch(config-if)#ip address 192.168.1.2 255.255.255.0
Switch(config-if)#exit
Switch(config)#int vlan 3
Switch(config-if)#
%LINK-5-CHANGED: Interface Vlan3, changed state to up

%LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan3, changed state to up

Switch(config-if)#ip address 192.168.2.2 255.255.255.0
Switch(config-if)#exit
Switch(config)#ip routing
Switch(config)#end
Switch#
%SYS-5-CONFIG_I: Configured from console by console