Re: EWC Policy

ShahrulEzwvn · ‎09-22-2022

anyone having issues with Microsoft Teams connectivity?

my environment is using EWC AP 9120. after deployment, some users complain that having lagging voice+video when using M. Teams, tried others application and it was okay.

balaji.bandi · ‎09-23-2022

check if you have any QOS config to prioritise the traffic and check :

https://www.cisco.com/c/en/us/products/collateral/wireless/embedded-wireless-controller-catalyst-access-points/white-paper-c11-743398.html

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ShahrulEzwvn · ‎09-23-2022

I see, so far doesn't set any qos policies for the ewc

Rich R · ‎09-23-2022

What WLC and what version of software?

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Please click Helpful if this post helped you and Select 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
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

ShahrulEzwvn · ‎09-23-2022

Ewc 9120. Version 17.6.3

Rich R · ‎09-23-2022

There is a bug https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwa31596 which specifically references impact with Teams but that only mentions 17.3 - not clear if it affects 17.6. Suggest to open a TAC case and ask that question and whether there are any other similar bugs which could impact 17.6. You could also try the workarounds on that bug.

------------------------------
Please click Helpful if this post helped you and Select 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
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

Arshad Safrulla · ‎09-26-2022

When the users reported this issue did you check the below

1. MCS rate

2. Band

3. Channel Utilization

4. Noise

5. Client driver (Needs to be up to date always, older WLAN firmware for certain WNIC's have well documented issues)

6. MS Teams service health

Without the above it will be super difficult to advise you

___________________________________________
TAC recommended codes for AireOS WLC's
Best Practices for AireOS WLC's
TAC recommended codes for 9800 WLC's
Best Practices for 9800 WLC's
Cisco Wireless compatibility matrix
___________________________________________
Arshad Safrulla

ShahrulEzwvn · ‎09-26-2022

Hi arshad, after users encountered this. They changed to LAN and it worked fine. Already did the scanning using ekahau, the rssi is around - 45dbm. There were only below 10 users connected to AP.

Arshad Safrulla · ‎09-26-2022

Still RSSI itself is not sufficient to conclude that wireless is the offender.

___________________________________________
TAC recommended codes for AireOS WLC's
Best Practices for AireOS WLC's
TAC recommended codes for 9800 WLC's
Best Practices for 9800 WLC's
Cisco Wireless compatibility matrix
___________________________________________
Arshad Safrulla

JPavonM · ‎09-26-2022

As @Arshad Safrulla said, check WLAN parameterrs in both client and infra side to discard any client side issue.

I would add to that checklist:

7. Check how many users are connected to same AP/radio and if this is a shared channel.

8. Check the Channel utilization and retry rate

9. If they are Windows, install Powershell's 'WifiTools" and use 'Monitor-WifiState' command to check data rate adn signal on the client side constantly, and same from the WLAN Infra side.