一、需求

AP 1在AC 1上线，AP 2在AC 2上线，Switch 1作为DHCP server为AP和Client分配IP地址。

1. 使用N＋1备份方式使AC 3对AC1和AC 2进行备份，AC 1和AC 2工作在主用状态，AC 3工作在备用状态，当AC 1或AC 2其中一台发生故障时，AC 3会接替故障AC接入AP和客户端；

二、注意事项

① N＋1备份仅对相同型号的AC生效，并且同时仅能对一台故障的主用AC进行备份。

② N＋1备份功能是一种冷备份，主备倒换过程中，关联故障AC的AP和客户端会掉线，需要等待十几分钟时间恢复业务。

③ 配置AP的序列号时请确保该序列号与AP唯一对应。

license问题：这里不做叙述，详情请看相关产品文档（真机环境下）

无线篇-华三无线控制器N＋1备份实验_HCL

三、配置步骤

Core1

#
vlan 100	#AP管理vlan
#
vlan 200	#业务vlan       
#
#
interface Vlan-interface100
 ip address 10.1.1.1 255.255.0.0
#
interface Vlan-interface200
 ip address 192.168.1.1 255.255.255.0
#
interface GigabitEthernet1/0/1
 port link-type trunk
 undo port trunk permit vlan 1
 port trunk permit vlan 100 200
#
interface GigabitEthernet1/0/2
 port link-type trunk
 undo port trunk permit vlan 1
 port trunk permit vlan 100 200
#
interface GigabitEthernet1/0/3
 port link-type trunk
 undo port trunk permit vlan 1
 port trunk permit vlan 100 200
#
interface Ten-GigabitEthernet1/0/50	#下联汇聚接口
 port link-type trunk
 undo port trunk permit vlan 1
 port trunk permit vlan all 
#
 dhcp enable
 #
dhcp server ip-pool 100	#AP管理地址池
 gateway-list 10.1.1.1
 network 10.1.0.0 mask 255.255.0.0
 option 43 hex 010c0a0101020a0101030a010104
#
dhcp server ip-pool 200	#业务地址池
 gateway-list 192.168.1.1
 network 192.168.1.0 mask 255.255.255.0
 dns-list 192.168.1.1
#

汇聚switch

#
vlan 100
#
interface GigabitEthernet1/0/1
 port access vlan 100
#
interface GigabitEthernet1/0/2
 port access vlan 100
#
interface Ten-GigabitEthernet1/0/50
 port link-type trunk
 undo port trunk permit vlan 1
 port trunk permit vlan all 
#

AC1

#
vlan 100
#
vlan 200
#
interface Vlan-interface100
 ip address 10.1.1.2 255.255.0.0
#
interface Vlan-interface200
 ip address 192.168.1.2 255.255.255.0
#
interface GigabitEthernet1/0/1
 port link-type trunk
 port trunk permit vlan 1 100 200
#
wlan service-template 1	#配置服务模板，本次实验转发模式为：隧道转发
 ssid Guest_wifi
 vlan 200
 cipher-suite wep40
 wep key 1 wep40 pass-phrase cipher 123456
 service-template enable
#
wlan ap-group group1	#创建AP组
 ap ap1
 ap-model WA6320-HCL
  radio 2
   radio enable
   service-template 1
#
wlan ap ap1 model WA6320-HCL #创建AP并对其SN进行关联
 serial-id H3C_AA-38-03-F8-08-00
#

AC2

vlan 100
#
vlan 200
#
wlan service-template 2
 ssid Guest_wifi2
 vlan 200
 cipher-suite wep40
 wep key 1 wep40 pass-phrase cipher 12345
 service-template enable
#              
interface Vlan-interface100
 ip address 10.1.1.3 255.255.0.0
#
interface Vlan-interface200
 ip address 192.168.1.3 255.255.255.0
#
interface GigabitEthernet1/0/1
 port link-type trunk
 port trunk permit vlan 1 100 200
#
#
wlan ap-group group2
 ap ap2
 ap-model WA6320-HCL
  radio 2
   radio enable
   service-template 2
#
wlan ap ap2 model WA6320-HCL 
 serial-id H3C_AA-38-06-59-09-00
#

AC3

#
vlan 100
#
vlan 200
#
wlan service-template 1
 ssid Guest_wifi1
 vlan 200
 cipher-suite wep40
 wep key 1 wep40 pass-phrase cipher 12345
 service-template enable
#              
wlan service-template 2
 ssid Guest_wifi2
 vlan 200
 cipher-suite wep40
 wep key 1 wep40 pass-phrase cipher 12345
 service-template enable
#
interface Vlan-interface100
 ip address 10.1.1.4 255.255.0.0
#
interface Vlan-interface200
 ip address 192.168.1.4 255.255.255.0
#
interface GigabitEthernet1/0/1
 port link-type trunk
 port trunk permit vlan 1 100 200
#
wlan ap-group group1
 priority 3	#设置优先级
 ap ap1
 ap-model WA6320-HCL
  radio 2
   radio enable
   service-template 1
#
wlan ap-group group2
 priority 3	#设置优先级
 ap ap2
 ap-model WA6320-HCL
  radio 2
   radio enable
   service-template 2
#              
wlan ap ap1 model WA6320-HCL 
 serial-id H3C_AA-38-03-F8-08-00
#
wlan ap ap2 model WA6320-HCL 
 serial-id H3C_AA-38-06-59-09-00
#

四、验证测试

查看AP注册状态

AC1

无线篇-华三无线控制器N＋1备份实验_HCL_02

AC2

无线篇-华三无线控制器N＋1备份实验_ci_03

看出ap1与ap2已分别在AC1和AC2上正常注册

模拟AC1故障：将AC1接口shudown

#
interface GigabitEthernet1/0/1
 shutdown
#

无线篇-华三无线控制器N＋1备份实验_HCL_04

查看ap1已成功切换到AC3上注册（冷切换过程AP会重新掉线再上线）

无线篇-华三无线控制器N＋1备份实验_ci_05