topic Re: Slowness Wifi in Wireless

Slowness Wifi

NasTar — Thu, 10 Mar 2022 14:22:13 GMT

Dear Community,

Please I need help from you, our collaborator claims that there are cuts on the Webex sessions because of the wifi connection, we have an AP2802E-E-K9, how can I troubleshoot to know where is the issue?

Thanks in advance;

Re: Slowness Wifi

balaji.bandi — Thu, 10 Mar 2022 14:38:13 GMT

You need to provide some more information here :

1. 1 user, all usres

2. webex only ?

3. how about in wired network ?

4. what clients OS and WIFI Drivers

so on list go up to start triage the issue

Many reason you need to start different ways :

https://community.cisco.com/t5/wireless-mobility-documents/wifi-troubleshooting-cheat-sheet/ta-p/3108889

Re: Slowness Wifi

Flavio Miranda — Thu, 10 Mar 2022 14:38:16 GMT

Do they have good sinal quality?

Do they complain about webex only or there are different services underperforming?

Re: Slowness Wifi

NasTar — Thu, 10 Mar 2022 15:36:31 GMT

Thank you for your response.

Not all users just a few of them, With the meeting platform there is a cut during the meeting, is working good in wired network, They have Windows 10 OS;

AP Running Image : 8.3.143.0

Please find attached a screenshot of Client view in WLC.

Regards,

Re: Slowness Wifi

NasTar — Thu, 10 Mar 2022 14:49:29 GMT

In the bellow the QOS of the client view from WLC, some collaborators claim the problem in the meeting platform like webex teams...

NETWORK & QOS

WMM	Supported
U-APSD	Disabled
QoS Level	Silver
IP Address	10.128.46.13
IPv6 Address	Unknown
VLAN	44
Mobility Role	Local

Re: Slowness Wifi

balaji.bandi — Thu, 10 Mar 2022 15:19:41 GMT

Not all users just a few of them, With the meeting platform there is a cut during the meeting;

other users can use same webex ? this could be may be webex issue ?

why do you think its wifi issue ? what about other application at the time it got cut webex call ?

Re: Slowness Wifi

Flavio Miranda — Thu, 10 Mar 2022 15:19:49 GMT

You can change that to Platinum which is better. But, make sure that clients gets good signal.

Re: Slowness Wifi

JPavonM — Thu, 10 Mar 2022 15:28:46 GMT

What about the cleint devices, are they all using the same platform (Windows, MacOS, Linux)? Have they all the same wNIC (Intel, Mediatek, Realtek, Broadcom)? Have you tested to upgrade drivers to latest release as @balaji.bandi said?

Re: Slowness Wifi

NasTar — Thu, 10 Mar 2022 15:54:36 GMT

I didn't understand what you meant about "change that to Platinum which is better"?
You find below the signal performance:

Signal Strength: -55 dBm Signal Quality: 42 dB Connection Speed: 173 Mbps Channel Width: 20 MHz

Re: Slowness Wifi

NasTar — Thu, 10 Mar 2022 16:02:17 GMT

Thank you for your reply,

When we switched from wifi to wired network in the live remote session Webex, the cut stopped so that's why I thought the problem from AP. How can I know the standardization of signal AP ? to do the comparison with our APs.

Re: Slowness Wifi

balaji.bandi — Thu, 10 Mar 2022 17:16:16 GMT

See you are going random here....If you like to fix the issue, Wifi is not easy, until you follow some stepts :

1. Identify the users having issue ?

2. identify teh area (is that same as user above ?)

3. what is the different in end user compare to works vs not working ?

4. how long this problem exisits ? recent ? what is the update on deviec ?

5. do we have latest drivers in end device ?

6. what is the outcome when working device take to non working area ? is this works ?

7. Do you see any issue whereAP connected switches have Drops ?

Re: Slowness Wifi

Joseph W. Doherty — Thu, 17 Mar 2022 17:14:04 GMT

Most likely, your quality issue is in the wireless segment.

I believe most advanced WAPs can prioritize traffic that they transmit, whereas most wireless clients don't bother. Further, although QoS, within wireless, itself, is defined, few hosts have implemented it, and the nature of wireless (being, basically, "shared") negates much of what you want to accomplish even with wireless QoS enabled and being used.

Further, when dealing with real-time traffic, that doesn't react well to drops, all the wireless issues, that can arise, causing such drops, need to be negated. (Often easier said than done.)

If in fact the wireless segment is the culprit of performance issues, often the "easiest" solution is to add WAPs, avoiding, though, overlapping channels, from WAPs within range of each other.

Again, remember, wireless is much like Ethernet, back in days of yore, when using 10Base2, 10Base5 or 10BaseT with hubs.

Re: Slowness Wifi

Leo Laohoo — Mon, 14 Mar 2022 03:15:07 GMT

@NasTar wrote:

Please I need help from you, our collaborator claims that there are cuts on the Webex sessions because of the wifi connection, we have an AP2802E-E-K9, how can I troubleshoot to know where is the issue?

Let us start with the following questions:

What do you mean "cuts on the Webex sessions"?
Can you replicate this issue?
Is this event only happening to ONE wireless clients or affecting EVERYONE ELSE in the Webex session?
What kind of platform is used when this issue occurs? Laptop? Computer? Tablet? Smartphone?
What OS? Windows, Apple, Android, Linux?
Is the Webex session video or voice?
When the "cuts on the Webex session" occurs, what happens to the voice/video? Is the voice stuttering or sounds like a robot? Does the voice freezes or pixelate? Or does the video goes blank altogether?
If there is only a few affected, what is their "role" in the session? Are they presenters?
If there is only a few affected, WHERE are they located? Were the people affected working-from-home, in the office?