Wireless Access

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Access network design for branch, remote, outdoor, and campus locations with HPE Aruba Networking access points and mobility controllers.
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Weak Signal strength and low Data rates on Aruba IAP 315

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  • 1.  Weak Signal strength and low Data rates on Aruba IAP 315

    EMPLOYEE
    Posted May 20, 2019 11:04 AM
      |   view attached

    Hello all,

     

    Have you ever faced any signal strength and data rate issues with the IAP 315s?

    One of our partners called us, that they are having weird issues at a customer.

     

    The customer is located in a Regular office building with thin brick walls inside (5cm). Bulding

    They have 35 of the 315 APs.

     

    They are experiencing very low signal strengths (-80dbm) , even if they are 5 meters away from the AP itself.

    They have tried it with 6.5.x.x and 8.2.x.x conservative releases.

     

    I told them to open a TAC case, but I would like to ask this from you also, maybe you have experienced something like this recently.

    Attachment(s)

    txt
    kti-ap-4-05.txt   466 KB 1 version


  • 2.  RE: Weak Signal strength and low Data rates on Aruba IAP 315

    EMPLOYEE
    Posted May 21, 2019 03:20 AM
    For some reason, all your APs ended up on channel 3 on the 2.4GHz, and 52E on the 5GHz with on 2.4 pretty low power (9dBm): 
    Aruba AP BSS Table
------------------
bss                ess           port  ip         phy    type  ch/EIRP/max-EIRP  cur-cl  ap name      in-t(s)  tot-t           flags
---                ---           ----  --         ---    ----  ----------------  ------  -------      -------  -----           -----
00:4e:35:98:a0:f2  KTI Internet  ?/?   10.1.0.40  a-VHT  ap    52E/18.0/23.0     1       KTI-AP-4-05  0        2d:22h:45m:33s  K
00:4e:35:98:a0:f3  KTI           ?/?   10.1.0.40  a-VHT  ap    52E/18.0/23.0     1       KTI-AP-4-05  0        3d:0h:33m:19s   K
00:4e:35:98:a0:f5  KOKIR         ?/?   10.1.0.40  a-VHT  ap    52E/18.0/23.0     0       KTI-AP-4-05  0        2d:21h:16m:37s  
00:4e:35:98:a0:e2  KTI Internet  ?/?   10.1.0.40  g-HT   ap    3/9.0/19.5        0       KTI-AP-4-05  0        2d:22h:45m:33s  K
00:4e:35:98:a0:e3  KTI           ?/?   10.1.0.40  g-HT   ap    3/9.0/19.5        0       KTI-AP-4-05  0        3d:0h:33m:19s   K
00:4e:35:98:a0:e5  KOKIR         ?/?   10.1.0.40  g-HT   ap    3/9.0/19.5        0       KTI-AP-4-05  0        2d:21h:16m:36s
    Did you configure manual channel/power? Please set both to auto for all APs if the signal strength is an issue. APs should not take channel 3, so apparently, someone changed the default configuration. ARM is changed to use 2.4 channel 1,2,3,4,6,8,1+,7+; change that back to 1,6,11 (and no wide + channels). For 5GHz disable 80 MHz channels. Having seen this, if you are familiar with Aruba Instant, I would reset the configuration and start again from scratch (as I don't know what else has been changed from the default). Otherwise, please work with Aruba TAC to get the configuration analyzed and suggestions for fixes.