Android maybe don´t have internet connection

[juergen_dannewi]

Hi everyone,

I´ve some strange situation with Android Smartphones in our Aerohive/Extreme Network (Mix of AP250 and 305C) environment.
The Android devices itself get´s an valid IP and authenticated to the Wifi but shows the information “maybe don´t have internet connection”.
Actual Workaround: Ping the device. The first 2 packages are lost, but than the device replies and shows connected.
I´ve started this discussion last year, but with Covid-19 the situation stuck.
 

I´ve also found that we are not the only one with this situation.

I can confirm that DNS port 53 and 853 is open for this dedicated Wifi VLAN on our firewall.
I´ve added the DNS ports for the native VLAN of the APs to this internal DNS server, now.
 

Does anyone has an idea, if this won´t help, how we could troubleshoot this?

Thankful for every idea!

[juergen_dannewi]

Hi,
I´ve maybe found an workaround for that.
We still experience this situation in different locations.
The setup:
Firewall (VLAN as GW, tagged) -> Core switch VLan (Vlan tagged on Port) -> Access switch (Vlan tagged on Port)-> AP (SSID VLAN, tagged)

SSID: VLAN which uses the Firewall as Gateway.
DHCP: relay on Firewall for VLAN subnet
DNS: Google 8.8.8.8
DHCP Lease Time: 30min

What is seen in the logs:
Client gets an IP from DHCP and tries to contact DNS several times.
No more other traffic is generated than DNS.

Workaround:
Clear the ARP-Cache on the Firewall/Routing device.
in our case the command "clear arp-cache".

[juergen_dannewi]

Hi, 

we are using the Aerohive/Extreme APs in an enterprise environment with a licensed On-Prem management server v21.1.22.1-IQVA.

The newest AP firmware for that management is actually 10.3.r3.

Never seen the free version or Cloud version, but we need to change to the Cloud version because we get the information that the On-Prem is EOS in December 2022.

How is your Home use setup?

AP is connected via patch line to the ISP Router which is used for DHCP, DNS, Firewall and Gateway?

No VLAN etc?

[SanderD]

Hi @juergen.dannewitz,

Sorry for the delay.
Maybe this could a stupid question but 'Client Trail' is that a feature that's not included in the free version off the ExtremeCloud IQ?
I don't have a license, i use it free because this is installed in private home and for now we don't need a payed license.

The only thing i can do is creating a report (Report-Client-WiFi).
And I see on the android device many 0.0.0.0 IP's in the list :



In the other post : https://community.extremenetworks.com/question/some-apps-on-android-devices-are-not-responding-ap130#4b47ce53-5215-4c7f-aa34-51d1b157d61a

There has been a firmware downgrade but i don't know the specific version, maybe you have any idea?

Best Regards,

[juergen_dannewi]

Hi @Sander Devos,

this issue is longer existing in our company and wasn´t fixed on 10.x firmware.
I´m not sure if 305 has older firmware than 10.x but I doesn´t expect that but was also happens on AP250 with older firmware. I was always hoping that a newer firmware will solve the problem.

Our management is still On-Prem. We get the notice that the On-Prem Management will End this year.
We would need to change to Cloud managed solution.

We´ve invested many time in troubleshooting. I can exclude Switch and Firewall, because it happens in different of our facilities with different firewall- or switch-manufacturers.

I fully understand the other topic you linked.
We changed one SSID in the smallest branch of us to another AP developer -> directly working without any troubles.
That´s the reason we are more focused on the AP environment itself to troubleshoot that.

Did you also experienced the situation that device doesn´t get Def. Gateway and DNS in the "Client Trail"?

Thanks that you answered to this post!

Maybe some other will follow that a solution will be found.

Best regards

[SanderD]

Hi @juergen.dannewitz,

We are facing problems with android and some applications : 'Vinted', 'marketplace', 'promopromo', these apps are extremly slow or does not load.
I found another topic about this problem recently on this community and post my question also : 
https://community.extremenetworks.com/question/some-apps-on-android-devices-are-not-responding-ap130#9228913e-10c4-4531-8c4a-9e0f608573b3

I have the same result with 2 different ISP's.
Using the ISP internal WiFi it works, using the SSID from the Extreme Ap's the problem is there...

i read about downgrade to an older Firmware but which is the good one ?



I launched a ticket (02491620) - on 16/12/2021 about this problem..., but as you say with COVID... no further response.
I relaunch this ticket, If i know more or find an solution i will keep you inform on this thread.

Best Regards,