Environment : Controller -- Switch -- AP ))) Station
Association ID is unique in each BSSID of AP.
For checking the AID in controller CLI, using "show ap association "
(ArubaChang) #show ap association ?
ap-group Filter on AP group
ap-name Filter on AP name
bssid Filter on AP MAC Address
channel Filter on channel
client-mac Filter by client MAC Address
essid Filter on ESSID
ip-addr Filter on AP IP Address
ip6-addr Filter on IPv6 Address
phy Filter on PHY type (a, b, or g)
remote Show association table for Bridge mode APs
voip-only Show VoIP Client information only
| Output Modifiers
Above the example, you can see aid field and the two station 00:24:d7:25:5a:b4 , 4c:eb:42:35:b3:94 are associated different BSSID.
One more station(70:f1:a1:54:f5:49) associated to BSSID (00:24:6c:5e:6b:20) and it's aid is "2".
Among the output, you can see "l-int" which is listening interval is set by easch station. The unit of "l-int" is number of beacon.
For verifing the aid from air capture, plese look up below screen shot ;
Above is association request & response packet
For getting information of Association ID, need to check Association response packet;
aid information is included in 802.11 Management capability info.