Solved: Re: Catalyst C9100 Series AP - Data Stream interruption every few seconds - SOLVED

MichaelBlaas68573 · ‎11-26-2020

Hello Cisco specialists,

Thank you in advance for your answers!

My new access point C9115AXI-E has constant interruptions in the data stream.
I only use this device from Cisco, it has the integrated EWC and is connected to an Asus RT-AC88U router.

I especially notice the problem when making calls with telephone software. The audio stream is interrupted every few seconds.
I also see this with LAN internal data transfers of files in the Windows10 Wifi monitor of the client.

More info:
- The distance between AP and client is 1 meter, but i tried also with 5 meters.

- The EWC and firmware version is the latest.

- The problem also exists with other client devices in the local network
- The problem is the same with 2.4 and 5 Ghz.
- When I connect to the Asus router's wifi (this is normally switched off) everything is ok.

Please note that I am a private user and only operate a home network. My knowledge is superficial.

Below are the screenshots from the client pc during a phone call

Connected to Asus - OK

Connected to Cisco AP - Not ok

Rich R · ‎11-26-2020

The EWC and firmware version is the latest. - what version?

Have you made sure you're using the latest Intel drivers?

Have you checked the logs on WLC and AP?

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Please click Helpful if this post helped you and Accept as Solution (drop down menu at top right of this reply) if this answered your query.
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TAC recommended codes for AireOS WLC's and TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's, Best Practices for 9800 WLC's and Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
Field Notice: FN74383 APs Running 17.12.4/5/6/6a May Run Out of Flash Space Preventing Upgrades
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390

View solution in original post

Rich R · ‎11-26-2020

The EWC and firmware version is the latest. - what version?

Have you made sure you're using the latest Intel drivers?

Have you checked the logs on WLC and AP?

------------------------------
Please click Helpful if this post helped you and Accept as Solution (drop down menu at top right of this reply) if this answered your query.
------------------------------
TAC recommended codes for AireOS WLC's and TAC recommended codes for 9800 WLC's
Best Practices for AireOS WLC's, Best Practices for 9800 WLC's and Cisco Wireless compatibility matrix
Check your 9800 WLC config with Wireless Config Analyzer using "show tech wireless" output or "config paging disable" then "show run-config" output on AireOS and use Wireless Debug Analyzer to analyze your WLC client debugs
Field Notice: FN63942 APs and WLCs Fail to Create CAPWAP Connections Due to Certificate Expiration
Field Notice: FN72424 Later Versions of WiFi 6 APs Fail to Join WLC - Software Upgrade Required
Field Notice: FN72524 IOS APs stuck in downloading state after 4 Dec 2022 due to Certificate Expired
- Fixed in 8.10.196.0, latest 9800 releases, 8.5.182.12 (8.5.182.13 for 3504) and 8.5.182.109 (IRCM, 8.5.182.111 for 3504)
Field Notice: FN70479 AP Fails to Join or Joins with 1 Radio due to Country Mismatch, RMA needed
Field Notice: FN74383 APs Running 17.12.4/5/6/6a May Run Out of Flash Space Preventing Upgrades
How to avoid boot loop due to corrupted image on Wave 2 and Catalyst 11ax Access Points (CSCvx32806)
Field Notice: FN74035 - Wave2 APs DFS May Not Detect Radar After Channel Availability Check Time
Leo's list of bugs affecting 2800/3800/4800/1560 APs
Default AP console baud rate from 17.12.x is 115200 - introduced by CSCwe88390

MichaelBlaas68573 · ‎11-26-2020

Hello rrudling,

thank you for the fast help!

A mishap happened to me, I overlooked that an update for the AP came out two weeks ago.
I have now installed the actual 17.3.2a.

I also downloaded from the Intel homepage and installed the latest software for the wireless chip built into the client, .

Then I did tests with phone calls, downloads from the Internet and local data transfers without having any problems or large fluctuations in the client's wifi monitor.
I think the problem is solved.

Thank you for your very helpful input!!!

MichaelBlaas68573 · ‎12-17-2020

Hello,

i have to come back on this topic, because after few days the issue is again present.

The Wifi have interruptions like described in the first post.

Now i use the latest firmware 17.4.1

I noticed, when i restart the AP (unplug the RJ45 Poe for some minutes) the problem is gone for some days.

MichaelBlaas68573 · ‎03-01-2021

I will bring up again my problem...

Someone can help me please?