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Access network design for branch, remote, outdoor, and campus locations with HPE Aruba Networking access points and mobility controllers.

AOS 10.4.1.2 - 6Ghz channel issues on AP655

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  • 1.  AOS 10.4.1.2 - 6Ghz channel issues on AP655

    Posted 25 days ago

    Not sure if this is somehow just me or if anyone else has 10.4.1.2 running and seeing this.  I did not have this issue when running 10.4.1.1 but not sure if it is just the firmware or Aruba Central that is causing this.

    For the last couple weeks (10.4.1.1 -> 10.4.1.2) we have had reports of wireless issues.  I found that our APs were selecting invalid channels on the 6Ghz range.  This was causing very poor TX to clients and very high retries/errors.

    I have manually set the channels for the 6Ghz on all of our APs and that has resolved our issue.

    Our setup:
    AP655 - 10.4.1.2
    Mobility GW(Controllers) - 9240 x2 - 10.4.1.2
    Switches are cx6300/8325/4100i - 3 tier network

    Here is some details/logs:
    AP is using channel 85S and has >90% retry rate

    The valid channels for 6Ghz 160Mhz are 5S, 37S, 69S, 101S, 133S, 165S, 197S - 85S is not a valid channel.

    Logs from a different AP but having the same issue.  This AP was using channel 21S which is invalid:

    Aruba AP BSS Table
    ------------------
    bss                ess                port  ip            band/ht-mode/bandwidth  ch/EIRP/max-EIRP  type  cur-cl  ap name       in-t(s)  tot-t            flags  mu-mimo
    ---                ---                ----  --            ----------------------  ----------------  ----  ------  -------       -------  -----            -----  -------
    ##:##:##:##:##:## SSID-Employee      ?/?   ##.##.##.##  6GHz/HE/160MHz          21S/21.0/29.6     ap    7       SITE-AP-27-F1  0        23d:12h:56m:47s  rTWx3  1
    ##:##:##:##:##:## SSID-Guest         ?/?   ##.##.##.##  6GHz/HE/160MHz          21S/21.0/29.6     ap    2       SITE-AP-27-F1  0        23d:12h:56m:46s  ETW    1

    Jun 27 02:10:33   sapd[7968]: <404014> <WARN> |AP SITE-AP-27-F1@##.##.##.##.127 sapd|  AM: provision from central radio mac: ##:##:##:##:##:##, channel: 21S, power: 210, opmode: TRI_BAND, execute_opmode: TRI_BAND,pri_chan:21, sec_chan:0, band:3,chan_bw:4 

    The last log I posted is why I think this might be related to Aruba Central and maybe not the firmware upgrade.

    AM: provision from central
    pri_chan:21
    band:3
    chan_bw:4

    I do not have any documentation on this so this is just an assumption but this is what I think the above means:
    Primary Channel - 21
    Wireless Band - 3 (6Ghz) - I assume 1=2.4Ghz and 2=5Ghz
    Channel Bandwidth - 4 (160Mhz) - I assume 1=20Mhz, 2=40Mhz, 3=80Mhz and 4=160Mhz

    If we put all of the above together we get 6Ghz 21S and that is not a valid channel.

    Also - I am not going to open a ticket with TAC - I am frustrated enough and have wasted tons of time troubleshooting this.  I am behind on work and do not have the time or emotional energy to deal with Aruba TAC.