V7的IRF可以自动同步License，但有些局点采用的是双机热备或冷备的方式，这时可采用License组实现两台AC的License共享，配置如下：
AC1配置：
#
wlan ap-license-group
local ip 172.31.3.4
member ip 172.31.3.5
ap-license-synchronization enable
#
AC2配置：
#
wlan ap-license-group
local ip 172.31.3.5
member ip 172.31.3.4
ap-license-synchronization enable
#
验证：可以看到同步了160个License，1个正在使用。
[5540E]display wlan ap-license-group
Group total licenses: 288
Group used licenses: 1
AP license synchronization: Enabled
Local IP: 172.31.3.5
Local role: Master
Member information: 1
IP address Total Used Member role State Online duration
172.31.3.4 160 1 Master UP 03hr 59min 08sec
