12AP负载均衡典型配置举例_负载均衡配置实例

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AP负载均衡典型配置举例

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目录简介 ······························································································································· 1 2 配置前提 ························································································································· 1 3 会话模式的负载均衡配置举例 ····························································································· 1

3.1 组网需求 ······················································································································ 1 3.2 配置思路 ······················································································································ 2 3.3 配置注意事项 ················································································································ 2 3.4 配置步骤 ······················································································································ 2

3.4.1 AC的配置 ··········································································································· 2 3.4.2 Switch的配置 ······································································································ 4 3.5 验证配置 ······················································································································ 5 3.6 配置文件 ······················································································································ 5流量模式的负载均衡配置举例 ····························································································· 6

4.1 组网需求 ······················································································································ 6 4.2 配置思路 ······················································································································ 7 4.3 配置注意事项 ················································································································ 7 4.4 配置步骤 ······················································································································ 7

4.4.1 AC的配置 ··········································································································· 7 4.4.2 Switch的配置 ······································································································ 9 4.5 验证配置 ···················································································································· 10 4.6 配置文件 ···················································································································· 10相关资料 ······················································································································· 12

i 1 简介

本文档介绍了AP负载均衡配置举例。配置前提

本文档不严格与具体软、硬件版本对应，如果使用过程中与产品实际情况有差异，请参考相关产品手册，或以设备实际情况为准。

本文档中的配置均是在实验室环境下进行的配置和验证，配置前设备的所有参数均采用出厂时的缺省配置。如果您已经对设备进行了配置，为了保证配置效果，请确认现有配置和以下举例中的配置不冲突。

本文档假设您已了解WLAN RRM特性。会话模式的负载均衡配置举例

3.1 组网需求

如图1所示，无线网络中AC下关联两台AP，三层交换机Switch作为DHCP服务器为AP和Client分配IP地址。要求AP之间根据客户端数量进行负载分担，当AP关联的客户端数量达到3个，且AP之间关联的无线客户端数量差值达到2个时，如果需要上线的客户端处在AP 1和AP 2的信号重叠区，则AP启动负载均衡。图1 会话模式的负载均衡组网图

ACSwitchDHCP serverAP 1AP 2Client 1Client 3Client 2Client 43.2 配置思路

为避免AP负载均衡拒绝客户端关联请求次数过多，使客户端上线时间过长，需要配置AP拒绝客户端关联请求的最大次数。

3.3 配置注意事项

  配置AP的序列号时请确保该序列号与AP唯一对应，AP的序列号可以通过AP设备背面的标签获取。

每个AP上必须绑定相同的服务模板，并且保证各个radio开启的模式是一样的。

3.4 配置步骤

3.4.1 AC的配置

(1)配置AC的接口

# 创建VLAN 100及其对应的VLAN接口，并为该接口配置IP地址。AC将使用该接口的IP地址与AP建立LWAPP隧道。

system-view [AC] vlan 100 [AC-vlan100] quit [AC] interface vlan-interface 100 [AC-Vlan-interface100] ip addre 192.168.100.1 255.255.255.0 [AC-Vlan-interface100] quit # 创建VLAN 200作为ESS接口的缺省VLAN，同时作为Client接入的业务VLAN，IP地址为192.168.200.1/24。

[AC] vlan 200 [AC-vlan200] quit [AC] interface vlan-interface 200 [AC-Vlan-interface200] ip addre 192.168.200.1 255.255.255.0 [AC-Vlan-interface200] quit(2)配置负载均衡

# 配置GigabitEthernet1/0/1接口的链路类型为Hybrid，允许VLAN 100和VLAN 200的报文通过，并且发送这些VLAN的报文时携带VLAN Tag。

[AC] interface gigabitethernet 1/0/1 [AC-GigabitEthernet1/0/1] port link-type hybrid [AC-GigabitEthernet1/0/1] port hybrid vlan 100 200 tagged [AC-GigabitEthernet1/0/1] quit # 进入RRM视图。

[AC] wlan rrm # 配置会话门限值为3，会话差值门限为2，当AP之间客户端差值为2以上时，认为处于不均衡状态。

[AC-wlan-rrm] load-balance seion 3 gap 2 # 配置AP拒绝客户端关联请求的最大次数为4。[AC-wlan-rrm] load-balance acce-denial 4 [AC-wlan-rrm] quit(3)在AC上配置AP并绑定无线服务

# 创建WLAN-ESS接口1，并配置WLAN-ESS 1接口加入VLAN 200。

[AC] interface WLAN-ESS 1 [AC-WLAN-ESS1] port acce vlan 200 [AC-WLAN-ESS1] quit # 创建clear类型的服务模板1。

[AC] wlan service-template 1 clear # 设置当前服务模板的SSID为service。

[AC-wlan-st-1] id service # 将WLAN-ESS 1接口绑定到服务模板1。

[AC-wlan-st-1] bind wlan-e 1 # 使能无线服务。

[AC-wlan-st-1] service-template enable [AC-wlan-st-1] quit # 创建AP管理模板，其名称为ap1，型号名称这里选择WA2620E-AGN。

[AC] wlan ap ap1 model WA2620E-AGN # 配置AP 1的序列号为21023529G007C000020。

[AC-wlan-ap-ap1] serial-id 21023529G007C000020 # 设置radio 2的射频类型为802.11gn。

[AC-wlan-ap-ap1] radio 2 type dot11gn # 将服务模板1与射频2进行关联。

[AC-wlan-ap-ap1-radio-2] service-template 1 # 配置射频的工作信道为6。

[AC-wlan-ap-ap1-radio-2] channel 6 # 使能AP 1的radio2。

[AC-wlan-ap-ap1-radio-2] radio enable [AC-wlan-ap-ap1-radio-2] quit # 创建AP管理模板，其名称为ap2，型号名称这里选择WA2620E-AGN。

[AC] wlan ap ap2 model WA2620E-AGN # 配置AP 2的序列号为21023529G007C000021。

[AC-wlan-ap-ap2] serial-id 21023529G007C000021 # 设置radio2的射频类型为802.11gn。

[AC-wlan-ap-ap2] radio 2 type dot11gn # 将服务模板1与射频2进行关联。

[AC-wlan-ap-ap2-radio-2] service-template 1 # 配置射频的工作信道为6。

[AC-wlan-ap-ap2-radio-2] channel 6 # 使能AP 2的radio2。

[AC-wlan-ap-ap2-radio-2] radio enable[AC-wlan-ap-ap2-radio-2] return 3.4.2 Switch的配置

# 创建VLAN 100和VLAN 200，其中VLAN 100用于转发AC和AP间LWAPP隧道内的流量，VLAN 200为无线用户接入的VLAN。

[Switch] vlan 100 [Switch-vlan100] quit [Switch] vlan 200 [Switch-vlan200] quit # 配置Switch与AC相连的GigabitEthernet1/0/1接口的链路类型为Trunk，当前Trunk口的PVID为100，允许VLAN 100通过。

[Switch] interface gigabitethernet 1/0/1 [Switch-GigabitEthernet1/0/1] port link-type trunk [Switch-GigabitEthernet1/0/1] port trunk permit vlan 100 [Switch-GigabitEthernet1/0/1] port trunk pvid vlan 100 [Switch-GigabitEthernet1/0/1] quit # 配置Switch与AP 1相连的GigabitEthernet1/0/2接口链路类型为Acce，当前Acce口允许VLAN 100通过。

[Switch] interface GigabitEthernet1/0/2 [Switch-GigabitEthernet1/0/2] port link-type acce [Switch-GigabitEthernet1/0/2] port acce vlan 100 # 配置Switch与AP 1相连的GigabitEthernet1/0/2接口使能PoE功能。

[Switch-GigabitEthernet1/0/2] poe enable [Switch-GigabitEthernet1/0/2] quit # 配置Switch与AP 2相连的GigabitEthernet1/0/3接口链路类型为Acce，当前Acce口允许VLAN 100通过。

[Switch] interface GigabitEthernet1/0/3 [Switch-GigabitEthernet1/0/3] port link-type acce [Switch-GigabitEthernet1/0/3] port acce vlan 100 # 配置Switch与AP 2相连的GigabitEthernet1/0/3接口使能PoE功能。

[Switch-GigabitEthernet1/0/3] poe enable [Switch-GigabitEthernet1/0/3] quit # 配置Switch使能DHCP服务。

[Switch] dhcp enable # 创建名为vlan100的DHCP地址池，配置动态分配的网段为192.168.100.0/24，网关地址为192.168.100.1，为AP 1和AP 2分配IP地址。

[Switch] dhcp server ip-pool vlan100 [Switch-dhcp-pool-vlan100] network 192.168.100.0 mask 255.255.255.0 [Switch-dhcp-pool-vlan100] gateway-list 192.168.100.1 [Switch-dhcp-pool-vlan100] quit # 创建名为vlan200的DHCP地址池，配置动态分配的网段为192.168.200.0/24，网关地址为192.168.200.1，为Client分配IP地址。

[Switch] dhcp server ip-pool vlan200[Switch-dhcp-pool-vlan200] network 192.168.200.0 mask 255.255.255.0 [Switch-dhcp-pool-vlan200] gateway-list 192.168.200.1 [Switch-dhcp-pool-vlan200] quit 3.5 验证配置

(1)AP 1关联了3个用户，由于AC配置了会话模式的负载均衡，当AP 1的会话数达到门限值3，且比AP 2的会话数多2个时，就是触发负载均衡。(2)当Client 3发现并试图关联到AP 1时，可以看到AP 1上的会话数已经达到门限值3，并比AP 2多了2个，所以AP 1会拒绝Client 3的接入，最终Client 3会关联到AP 2上。

3.6 配置文件



# vlan 100 # vlan 200 # wlan rrm load-balance seion 3 gap 2 load-balance acce-denial 4 # wlan service-template 1 clear id service bind WLAN-ESS 1 service-template enable # interface Vlan-interface100 ip addre 192.168.100.1 255.255.255.0 # interface Vlan-interface200 ip addre 192.168.200.1 255.255.255.0 # interface GigabitEthernet1/0/1 port link-type hybrid port hybrid vlan 100 200 tagged # interface WLAN-ESS1 port acce vlan 200 # wlan ap ap1 model WA2620E-AGN serial-id 21023529G007C000020 radio 2 type dot11gn channel 6 service-template 1 radio enable AC：# wlan ap ap2 model WA2620E-AGN serial-id 21023529G007C000021 radio 2 type dot11gn channel 6 service-template 1 radio enable # 

# Switch：

dhcp enable # vlan 100 # vlan 200 # dhcp server ip-pool vlan100 network 192.168.100.0 mask 255.255.255.0 gateway-list 192.168.100.1 # dhcp server ip-pool vlan200 network 192.168.200.0 mask 255.255.255.0 gateway-list 192.168.200.1 # interface GigabitEthernet1/0/1 port link-type trunk port trunk permit vlan 100 port trunk pvid vlan 100 # interface GigabitEthernet1/0/2 port link-type acce port acce vlan 100 poe enable # interface GigabitEthernet1/0/3 port link-type acce port acce vlan 100 poe enable # 4 流量模式的负载均衡配置举例

4.1 组网需求

如图2所示，无线网络中AC下关联两台AP，三层交换机Switch作为DHCP Server为AP和Client分配IP地址。要求AP之间根据流量进行负载分担，设置AP最大带宽为30M，当通过AP的流量占用AP最大带宽的50%，且AP之间的流量占用带宽的差值达到AP最大带宽的30%时，如果需要上线的客户端处在AP 1和AP 2的信号重叠区，则AP启动负载均衡。图2 流量模式的负载均衡组网图

ACSwitchDHCP serverAP 1AP 2Client 1Client 3Client 2

4.2 配置思路

为避免AP负载均衡拒绝客户端关联请求次数过多，使客户端上线时间过长，需要配置AP拒绝客户端关联请求的最大次数。

4.3 配置注意事项

  配置AP的序列号时请确保该序列号与AP唯一对应，AP的序列号可以通过AP设备背面的标签获取。

每个AP上必须绑定相同的服务模板，并且保证各个radio开启的模式是一样的。

4.4 配置步骤

4.4.1 AC的配置

(1)配置AC的接口

# 创建VLAN 100及其对应的VLAN接口，并为该接口配置IP地址。AC将使用该接口的IP地址与AP建立LWAPP隧道。

system-view [AC] vlan 100 [AC-vlan100] quit [AC] interface vlan-interface 100[AC-Vlan-interface100] ip addre 192.168.100.1 255.255.255.0 [AC-Vlan-interface100] quit # 创建VLAN 200作为ESS接口的缺省VLAN，同时作为Client接入的业务VLAN，IP地址为192.168.200.1/24。

[AC] vlan 200 [AC-vlan200] quit [AC] interface vlan-interface 200 [AC-Vlan-interface200] ip addre 192.168.200.1 255.255.255.0 [AC-Vlan-interface200] quit(2)配置负载均衡

# 配置GigabitEthernet1/0/1接口的链路类型为Hybrid，允许VLAN 100和VLAN 200的报文通过，并且发送这些VLAN的报文时保留VLAN Tag。

[AC] interface gigabitethernet 1/0/1 [AC-GigabitEthernet1/0/1] port link-type hybrid [AC-GigabitEthernet1/0/1] port hybrid vlan 100 200 tagged [AC-GigabitEthernet1/0/1] quit # 进入RRM视图。

[AC] wlan rrm # 配置最大带宽为30M。

[AC-wlan-rrm] dot11n max-bandwidth 30000 # 配置流量门限值为50%，流量差值门限为30%。

[AC-wlan-rrm] load-balance traffic 50 gap 30 # 配置AP拒绝客户端关联请求的最大次数为4 [AC-wlan-rrm] load-balance acce-denial 4 # 创建WLAN-ESS接口1，并配置WLAN-ESS 1接口加入VLAN 200。

[AC] interface wlan-e 1 [AC-WLAN-ESS1] port acce vlan 200 [AC-WLAN-ESS1] quit # 创建clear类型的服务模板1。

[AC] wlan service-template 1 clear # 设置当前服务模板的SSID为service。

[AC-wlan-st-1] id service # 将WLAN-ESS 1接口绑定到服务模板1。

[AC-wlan-st-1] bind wlan-e 1 # 使能无线服务。

[AC-wlan-st-1] service-template enable [AC-wlan-st-1] quit(3)在AC上配置AP并绑定无线服务

# 创建AP管理模板，其名称为ap1，型号名称这里选择WA2620E-AGN。

[AC] wlan ap ap1 model WA2620E-AGN # 配置AP 1的序列号为21023529G007C000020。

[AC-wlan-ap-ap1] serial-id 21023529G007C000020# 设置radio 2的射频类型为802.11gn。

[AC-wlan-ap-ap1] radio 2 type dot11gn # 将服务模板1与射频2进行关联。

[AC-wlan-ap-ap1-radio-2] service-template 1 # 配置射频的工作信道为6。

[AC-wlan-ap-ap1-radio-2] channel 6 # 使能AP 1的radio 2。

[AC-wlan-ap-ap1-radio-2] radio enable [AC-wlan-ap-ap1-radio-2] quit # 创建AP管理模板，其名称为ap2，型号名称这里选择WA2620E-AGN。

[AC] wlan ap ap2 model WA2620E-AGN # 配置AP 2的序列号为21023529G007C000021。

[AC-wlan-ap-ap2] serial-id 21023529G007C000021 # 设置radio 2的射频类型为802.11gn。

[AC-wlan-ap-ap2] radio 2 type dot11gn # 将服务模板1与射频2进行关联。

[AC-wlan-ap-ap2-radio-2] service-template 1 # 配置射频的工作信道为6。

[AC-wlan-ap-ap2-radio-2] channel 6 # 使能AP 2的radio 2。

[AC-wlan-ap-ap2-radio-2] radio enable [AC-wlan-ap-ap2-radio-2] return 4.4.2 Switch的配置

# 创建VLAN 100和VLAN 200，其中VLAN 100用于转发AC和AP间LWAPP隧道内的流量，VLAN 200为无线用户接入的VLAN。

[Switch] interface GigabitEthernet1/0/2 [Switch-GigabitEthernet1/0/2] port link-type acce [Switch-GigabitEthernet1/0/2] port acce vlan 100# 配置Switch与AP 1相连的GigabitEthernet1/0/2接口使能PoE功能。

[Switch-GigabitEthernet1/0/2] poe enable [Switch-GigabitEthernet1/0/2] quit # 配置Switch与AP 2相连的GigabitEthernet1/0/3接口链路类型为Acce，当前Acce口允许VLAN 100通过。

[Switch-GigabitEthernet1/0/3] poe enable [Switch-GigabitEthernet1/0/3] quit # 配置Switch使能DHCP服务。

[Switch] dhcp enable # 创建名为vlan100的DHCP地址池，配置动态分配的网段为192.168.100.0/24，网关地址为192.168.100.1，为AP 1和AP 2分配IP地址。

[Switch] dhcp server ip-pool vlan200 [Switch-dhcp-pool-vlan200] network 192.168.200.0 mask 255.255.255.0 [Switch-dhcp-pool-vlan200] gateway-list 192.168.200.1 [Switch-dhcp-pool-vlan200] quit 4.5 验证配置

(1)由于AC上配置了流量负载均衡，当AP的最大带宽为30M时，系统的流量门限为30M×50%=15M，流量差值门限为30M×30%=9M。(2)当Client 1和Client 2关联到AP 1时，使用发送流量的工具IxChariot给AP 1 打流量，让AP 1上此时的流量大于17M。(3)此时AP 2上由于没有无线用户关联，所以没有流量。

(4)当Client 3发现并试图关联到AP 1时，由于AC上启用了流量负载均衡功能，此时AP 1上的流量为17M（大于AC上配置的流量门限15M和流量差值门限9M），所以AC会拒绝Client 3对AP 1的关联请求，Client 3只能关联到AP 2上。

4.6 配置文件



# vlan 100 # AC：vlan 200 # wlan rrm dot11n max-bandwidth 30000 load-balance traffic 50 gap 30 load-balance acce-denial 4 # wlan service-template 1 clear id service bind WLAN-ESS 1 service-template enable # interface Vlan-interface100 ip addre 192.168.100.1 255.255.255.0 # interface Vlan-interface200 ip addre 192.168.200.1 255.255.255.0 # interface GigabitEthernet1/0/1 port link-type hybrid port hybrid vlan 100 200 tagged # interface WLAN-ESS1 port acce vlan 200 # wlan ap ap1 model WA2620E-AGN serial-id 21023529G007C000020 radio 2 type dot11gn channel 6 service-template 1 radio enable # wlan ap ap2 model WA2620E-AGN serial-id 21023529G007C000021 radio 2 type dot11gn channel 6 service-template 1 radio enable # 

# Switch：

  《H3C WX系列无线控制器产品配置指导》“WLAN配置指导” 《H3C WX系列无线控制器产品命令参考》“WLAN命令参考”

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