关于AC上的wlan-ESS 接口属性问题

我这边采用的AC是wx5500e ,ap是2620的，AC上做的是如下配置（省去了基本配置）

wlan service-template 1 crypto

 ssid BAOSTEEL-MG

 bind WLAN-ESS 10

 cipher-suite tkip

 cipher-suite ccmp

 security-ie rsn

 security-ie wpa

 service-template enable

#

wlan service-template 2 clear

 ssid BAOSTEEL-GUEST

 bind WLAN-ESS 20

 service-template enable

#

wlan service-template 3 crypto

 ssid 802.1x-test

 bind WLAN-ESS 30

 cipher-suite tkip

 security-ie wpa

 service-template enable

#

interface WLAN-ESS0

 port link-type hybrid

 port hybrid vlan 1 untagged

#

interface WLAN-ESS10

 port link-type hybrid

 undo port hybrid vlan 1

 port hybrid vlan 100 to 140 untagged

 port hybrid pvid vlan 100

 mac-vlan enable

 port-security port-mode userlogin-secure-ext

 port-security tx-key-type 11key

 undo dot1x handshake

 dot1x mandatory-domain 1x

 undo dot1x multicast-trigger

#

interface WLAN-ESS20

 port link-type hybrid

 port hybrid vlan 1 200 untagged

 port hybrid pvid vlan 200

#

interface WLAN-ESS30

 port link-type hybrid

 undo port hybrid vlan 1

 port hybrid vlan 100 to 140 untagged

 port hybrid pvid vlan 100

 mac-vlan enable

 .............................

 wlan ap cgb-2fd3 model WA2620-AGN id 67

 serial-id 219801A0F9C153000114

 radio 1

  service-template 1 vlan-id 110

  service-template 2 vlan-id 130

  radio enable

 radio 2

  service-template 1 vlan-id 110

  service-template 2 vlan-id 130

  radio enable

#

wlan ap cgb-3fd1 model WA2620-AGN id 69

 serial-id 219801A0F9C153000107

 radio 1

  service-template 1 vlan-id 110

  service-template 2 vlan-id 130

  radio enable

 radio 2

  service-template 1 vlan-id 110

  service-template 2 vlan-id 130

  radio enable

#

wlan ap cgb-3fd2 model WA2620-AGN id 59

 serial-id 219801A0F9C153000184

 radio 1

  service-template 1 vlan-id 110

  service-template 2 vlan-id 130

  radio enable  

 radio 2

  service-template 1 vlan-id 110

  service-template 2 vlan-id 130

  radio enable

#

wlan ap cgb-3fd3 model WA2620-AGN id 73

 serial-id 219801A0F9C153000013

 radio 1

  service-template 1 vlan-id 110

  service-template 2 vlan-id 130

  radio enable

 radio 2

  service-template 1 vlan-id 110

  service-template 2 vlan-id 130

  radio enable

............

其中 vlan 100-140为我的无线终端使用的网段，vlan 99为设备管理vlan,

在网上看到一个资料说，以上配置不够优化，可以改成如下

以创建wlan-ess 30 接口为例，修改为如下配置

interface WLAN-ESS30

 port link-type hybrid

 undo port hybrid vlan 1

 port hybrid vlan 99 untagged

 port hybrid pvid vlan 99

 mac-vlan enable

 说是用这种配置，可以不浪费大量空口资源，请问是这样的吗。

 组网图是这样的

 Ac ---trunk-----核心SW---trunk---接入switch -----无线AP 

 其中所有设备 上配置有vlan 99用作设备管理

 AC 上有配置客户端接入所需的vlan