cisco交换机vlan间通讯

一、拓扑图

二、设备

1. cisco 3560

2. cisco 2960

 vlan 10    192.168.10.0/24

 vlan 20    192.168.20.0/24

三、配置步骤

 A 交换机上：

conf t

vlan 10

vlan 20

interface Vlan 10

ip address 192.168.10.1 255.255.255.0

interface Vlan 20

ip address 192.168.20.1 255.255.255.0

 

interface FastEthernet0/1

switchport trunk encapsulation dot1q

switchport mode trunk

 

interface FastEthernet0/1

switchport trunk encapsulation dot1q

switchport mode trunk

 

ip routing

 

B 交换机上：

conf t

vlan 10

vlan 20

interface FastEthernet0/1

switchport trunk allowed vlan 10,20

switchport mode trunk

interface FastEthernet0/2

switchport access vlan 10

switchport mode access

interface FastEthernet0/3

switchport access vlan 20

switchport mode access

 

C交换机上： 同B

 

PC机器上 ，指定网关，其他类似

Vlan 中主机的网关实际上就是vlan虚接口的ip地址

 

四、验证

vlan 间相通

 

五，三层交换DHCP配置

     在A交换机上进行配置，PC机换成DHCP获取

Switch#configure t

Enter configuration commands, one per line. End with CNTL/Z.

Switch(config)#ip dhcp excluded-address 192.168.10.1 192.168.10.10

Switch(config)#ip dhcp excluded-address 192.168.20.1 192.168.20.10

Switch(config)#ip dhcp pool vlan10pool

Switch(dhcp-config)#network 192.168.10.0 255.255.255.0

Switch(dhcp-config)#default-router 192.168.10.1

Switch(dhcp-config)#

Switch(dhcp-config)#ip dhcp pool vlan20pool

Switch(dhcp-config)#network 192.168.20.0 255.255.255.0

Switch(dhcp-config)#default-router 192.168.20.1

Switch#write

Building configuration...

[OK]