WLC和汇聚交换机的配置

无线控制器的配置步骤（必须配置的）

与交换机连接的接口配置，vlan 13为设备管理IP接口，vlan12为无线vlan接口，通过trunk连接交换机传输vlan数据流。这里vlan13为ap接入vlan，vlan12为无线终端接入vlan

配置无线设备vlan的管理IP配置以及无线AP的DHCP地址池配置

配置无线客户端vlan的接口IP以及无线客户端的DHCP地址池

配置无线SSID

配置无线连接的加密算法和认证方式

monitor界面可以看到LAP连接

!交换机与控制器之间做trunk连接

interfaceGigabitEthernet1/0/6

descriptionLINK-WLC

switchport trunkencapsulation dot1q

switchport modetrunk

!
vlan 12
name WIRELESS
!
vlan 13
name WLC
!
ip dhcp pool wireless
network 10.40.58.0255.255.255.0
default-router10.40.58.254
!
ip dhcp pool ap-dhcp
network 10.40.59.0255.255.255.0
default-router10.40.59.254
interface Vlan12
ip address 10.40.58.254 255.255.255.0
!
interface Vlan13
ip address 10.40.59.254255.255.255.0
接下来只要将接入层交换机配置如下:（接入层交换机与3层交换机通过trunk连接）
将连接AP的端口都划到AP的vlan中，这样AP获取到10.40.59.9段的IP，无线客户端获取到10.40.58.0的地址段
interfaceFastEthernet0/21
switchportaccess vlan 13
!

配置时发生错误的一个案例

原始拓扑图

在上述的拓扑图，3层交换机和WLC之间通过trunk连接，配置为untagged报错

估计是bug，后来只好将拓扑图修改为如下，将WLC和3层交换机之间的连接改为port-channel，顺便改变了无线获取的要求：

然后在WLC的LAG里改为enable，即启用trunk连接，打上port-channel。

要求拓扑图实现的效果如下：
1、LAP获取的地址段同WLC的网段相同，为192.168.33.0/24
2、无线终端获取的地址为汇聚层交换机上另外定义的网段，为10.40.24.0/24.
汇聚层交换机的配置如下
ip routing
ip dhcp excluded-address 10.40.24.1 10.40.24.9
ip dhcp excluded-address 10.40.24.240 10.40.24.254
ip dhcp excluded-address 192.168.33.1 192.168.33.189
ip dhcp excluded-address 192.168.33.240 192.168.33.254
!
ip dhcp pool wireless  无线客户端的地址池
network 10.40.24.0 255.255.255.0
default-router10.40.24.254
!
ip dhcp pool ap  ap获取的地址
network 192.168.33.0 255.255.255.0
default-router 192.168.33.254
option 43 hex f108.c0a8.21f9
lease 7
!

!
!
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
vlan 2
name OFFICE
!
vlan 8
name Wireless
!
!
interface Port-channel1
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet1/0/1
!
interface FastEthernet1/0/2
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface FastEthernet1/0/3
!
interface FastEthernet1/0/4
!
interface FastEthernet1/0/5
!
interface FastEthernet1/0/6
!
interface FastEthernet1/0/7
!
interface FastEthernet1/0/8
!
interface FastEthernet1/0/9
!
interface FastEthernet1/0/10
!
interface FastEthernet1/0/11
!
interface FastEthernet1/0/12
!
interface FastEthernet1/0/13
!
interface FastEthernet1/0/14
!
interface FastEthernet1/0/15
!
interface FastEthernet1/0/16
!
interface FastEthernet1/0/17
!
interface FastEthernet1/0/18
!
interface FastEthernet1/0/19
!
interface FastEthernet1/0/20
!
interface FastEthernet1/0/21
!
interface FastEthernet1/0/22
!
interface FastEthernet1/0/23
!
interface FastEthernet1/0/24
!
interface GigabitEthernet1/0/1
switchport trunk encapsulation dot1q
switchport mode trunk
!
interface GigabitEthernet1/0/2
switchport trunk encapsulation dot1q
switchport mode trunk
channel-group 1 mode on
!
interface Vlan1
ip address 192.168.33.254 255.255.255.0
no ip mroute-cache
!
interface Vlan2
no ip address
no ip mroute-cache
!
interface Vlan8
ip address 10.40.24.254 255.255.255.0
ip helper-address 192.168.33.249

option 43 hexf108.c0a8.21f9 option43属性主要应用在WLAN中AP设备从dhcp服务器获取地址后，通过dhcp服务器下发的option43属性去找AC注册，本例中主要用于AP通过192.168.33.249的WLC上获取ip地址
ip helper-address 192.168.33.249 dhcp中继，通过WLC的DHCP地址池中转获取地址，但是这里我们在WLC上配置了主要DHCPserver为192.168.33.254

本文出自 “Learn_Note” 博客，谢绝转载！