XG managed APX 740 APs randomly going offline and dropping all clients

Feature and severity: I have a bug (appears to be) with SFOS v18 v3 and APX 740 wireless access points that I consider moderately impacting.

Summary: I am unsure of the trigger, however, every now and then (appears random but multiple times per day) all 3 of my APX 740s “appear” to go offline then come back a minute or two later.

Observed behavior: All 3 APs drop all clients and the SSID isn’t broadcast then after two or three minutes they come back.  All the clients need to re-home to the best AP again.  I run 3 740s using an XG210 as the controller and have 3 SSIDs (one for only 2.4ghz, one for only 5ghz and one for a guest SSID that’s 2.4 + 5ghz).  I thought it may be related to auto channel selection so I manually set the channel on both 5ghz and 2.4ghz radios on all APs (different channels of course).  The problem persisted though.  I don’t recall having this issue previously but it may have been happening without me being aware.  I say that because I’ve recently added significant home automation devices so now it’s very noticeable when this happens.

i tried Sophos central wireless and it’s worse.  I won’t go back to central until several releases come out.

Reproduce it:  This happens on its own many times a day but nothing that forces it that I’m aware of.

Supporting logs: The log viewer, under “SYSTEM” shows (just a brief excerpt for brevity):

SYSTEM
2020-01-05 14:13:20
WirelessProtection
   
[MASTER] sending notification about offline AP P210018WVRKDY75
18006
SYSTEM
2020-01-05 13:00:20
WirelessProtection
   
Successfully sent config to AP [P210018V7XJJH9F].
18007
SYSTEM
2020-01-05 13:00:05
WirelessProtection
   
Successfully sent config to AP [P210018WVRKDY75].
18007
SYSTEM
2020-01-05 12:59:48
WirelessProtection
   
[MASTER] sending notification about offline AP P210018V7XJJH9F
18006
SYSTEM
2020-01-05 12:59:27
WirelessProtection
   
[MASTER] sending notification about offline AP P210018WVRKDY75
18006
SYSTEM
2020-01-05 12:57:29
WirelessProtection
   
Successfully sent config to AP [P210018V7XJJH9F].
18007
SYSTEM
2020-01-05 12:56:49
WirelessProtection
   
[MASTER] sending notification about offline AP P210018V7XJJH9F
18006
SYSTEM
2020-01-05 12:56:05
WirelessProtection
   
Successfully sent config to AP [P210018WVRKDY75].
18007
SYSTEM
2020-01-05 12:55:25
WirelessProtection
   
[MASTER] sending notification about offline AP P210018WVRKDY75
18006

 

Parents
  • Check your DHCP server settings and logviewer for strange behaviour.

    Ian

    XG115W - v20 GA - Home

    XG on VM 8 - v20 GA

    If a post solves your question please use the 'Verify Answer' button.

  • The XG is my DHCP server. What are you suggesting I check?  It’s one subnet with a few manual reservations (I could manually reserve the APs but that seems unusual to me) and the rest of the settings are default.  And regarding log viewer , I thought what I saw was strange. So, I’m not sure I’d be able to identify what’s stranger so to speak.

    Only thing I think I changed was I enabled “conflict resolution” under DHCP.

    if you’re alluding to something on the client side - every single device that’s wirelessly connected drops and the SSIDs stop broadcasting so I don’t believe it’s that.

  • I am not alluding to anything, I am asking questions about your configuration that might/could be causing the issue.

    Next, have you deregistered the devices from the Wireless central so they are only managed by the XG?

    Ian

    XG115W - v20 GA - Home

    XG on VM 8 - v20 GA

    If a post solves your question please use the 'Verify Answer' button.

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