Is 6.1-r7 firmware having bug with PBA?

Products cnMatrix
1

All of WAPs connected to switch running on 6.1-R7 via PBA, keep going offline in cloud.

@TamN

2

Hi , same for me, after upgrade to the last version all ap are offline from cloud

3

Hi Aman & Fabrizio, Could you please provide more details of the problem? This will help us to quickly reproduce the problem and identify the root cause.

  1. Are WAPs getting power from the switches?
  2. What versions are running on the WAPs, and model of the WAPs?
  3. Please type the following CLI commands:
    show logging
    show pba interface
    show pba interface statistics
    show interface link
    show tech

Please also raise customer tickets for tracking. Thank you.

4

Yes, all WAPs are getting power from Cambium switch only.
WAPs are running on 6.6.0.3-R9.
i have raised ticket, but there was no satisfactory answer. that is why i have put this in community page and tagged you.

show tech (2).txt (297.4 KB)
show interface link.txt (2.4 KB)
show pba interface statistics.txt (2.5 KB)
show pba interface.txt (2.3 KB)
show logging.txt (44.7 KB)

5

Thanks Aman for the data. Can you please let me know what firmware version is installed on those APs that went offline after the switch firmware upgrade?

6

Hello, in my case is 6.6.2.1-r5

7

Thanks Fabrizio for the info.
I think your issue is caused by a recent fix for the auto-vlan to correctly send the untag vlan to the switch. This results into switch configuring the untag vlan as the pvid of the switch port, thus overwrites the port’s configured pvid. This prevents the APs from getting the DHCP IP addresses.
There is a couple of choices to rectify the problem:

  1. Configure the untag vlan to match the port’s pvid. This means setting the correct management vlan to the right vlan on the AP. This is the preferred option.
  2. Disable auto-vlan in the switch group. It is enabled by default in the switch group. With the auto-vlan feature, Cambium AP informs the switch of VLANs and its native/untag VLAN to be configured on the switch port automatically. When the AP is disconnected, the switch port configuration will be restored.
    Let me know if you want to learn more about the auto-vlan feature.