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Mobility Express member AP strange broadcasting problem

flanger
Level 1
Level 1

Hello everyone.

I have set up three access points 2x AIR-AP3802I-B-K9 and AIR-CAP3702I-A-K9 running 8.10.180.5 with one 3802i acting as ME controller + ap, while others are lightweight members. They're also members of the same AP group with single SSID.

Both 3802i APs are working as expected, when I roam from one's location to another, my Samsung android phone reconnects automatically without a problem, but when I get close to 3702i phone can't find either 2.4GHz or 5GHz. I've tried two individual SSIDs for each band but still phones can not detect any, no matter what channel width and combinations I try. What's even more strange, if I do the same with notebook then there is no problem, it reconnects seamlessly. And if I switch 3702i to autonomous image and set it up as a standalone unit, then both bands work just fine for phones as well.

"AP type" for all three APs is indicated as FlexConnect with vlan mode enabled and they're all wired to the same switch. I've run out of ideas how to troubleshoot further.

AP Name                         Slots  AP Model              Ethernet MAC       Location              Country     IP Address       Clients  DSE Location  
------------------------------  -----  --------------------  -----------------  --------------------  ----------  ---------------  -------  --------------
*AP_3802_1                3      AIR-AP3802I-B-K9       28:6f:7f:06:b8:00  Room1              US          10.1.2.5         0        [0 ,0 ,0 ]
AP_3802_2                3      AIR-AP3802I-B-K9       00:81:c4:24:0e:32  Room2               US          10.1.2.6       1        [0 ,0 ,0 ]
AP_3702i                 2      AIR-CAP3702I-A-K9      18:8b:9d:bc:0e:1c  Room3               US          10.1.2.7       0        [0 ,0 ,0 ]
(Cisco Controller) >show advanced 802.11a summary  

Member RRM Information
AP Name                          MAC Address       Slot Admin    Oper        Channel            TxPower       BSS Color
-------------------------------- ----------------- ---- -------- ----------- ------------------ ------------- ----------
AP_3802_1                 08:96:ad:da:42:c0  1   ENABLED  UP          (120,116)          *1/7 (18 dBm) N/A      
AP_3802_2                 00:2a:10:83:73:10  1   ENABLED  UP          (64,60)            *1/7 (20 dBm) N/A      
AP_3702i                  18:8b:9d:dd:a8:b0  1   ENABLED  UP          (52,56)            *1/6 (17 dBm) N/A      

* global assignment

(Cisco Controller) >show advanced 802.11b summary

Member RRM Information
AP Name                          MAC Address       Slot Admin    Oper        Channel            TxPower       BSS Color
-------------------------------- ----------------- ---- -------- ----------- ------------------ ------------- ---------
AP_3802_1                 08:96:ad:da:42:c0  0   ENABLED  UP          1                  *1/8 (23 dBm) N/A      
AP_3802_2                 00:2a:10:83:73:10  0   ENABLED  UP          6                  *1/8 (23 dBm) N/A      
AP_3702i                  18:8b:9d:dd:a8:b0  0   ENABLED  UP          11                 *1/8 (23 dBm) N/A      

 

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