EWC Deployment
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08-30-2022 06:34 AM
Does anyone know the best practice for EWC deployment. Currently having EWC 10x C9120AXI-K. Not very sure for the design whether should go for 10x C9120AXI-K all as EWC or make it 2x C9120AXI-K EWC(HA) and convert 8 C9120AXI-K to lightweight AP. Any advise?
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08-30-2022 06:54 AM
If you looking HA, you can deploy 2 AP as HA environment and rest will join controller is good option i casee.
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08-30-2022 06:57 AM
Is there any issue if all 10 APs running as EWC?
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08-30-2022 08:16 AM
why do you want to do that ?
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08-30-2022 02:35 PM
The 10 APs came with EWC or is it better to run 2 APs as EWC and the rest convert it as lightweight AP?
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08-31-2022 01:24 AM
>... or is it better to run 2 APs as EWC and the rest convert it as lightweight AP
Yes, if you want to use 2 EWC, use HA-mode and or check this document : https://www.cisco.com/c/en/us/td/docs/wireless/controller/ewc/17-7/config-guide/ewc_cg_17_7/m_ewc_high_availability.pdf , if not use one EWC only
M.
-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '
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08-31-2022 08:56 AM
I don't know what the official best practice recommended option is but agree with @balaji.bandi
Having them all running EWC probably just increases the complexity of the solution so keep it simple and make sure your 2 EWC APs are in the best/most secure locations least likely to encounter problems then no concern about APs in more risky locations potentially becoming controllers.
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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
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09-21-2022 05:31 PM
Hi thanks, can two ewc use different model?
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09-21-2022 05:39 PM
i would suggest having the same model for redundancy.
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09-21-2022 05:56 PM
I see ok thanks. Lets say all APs are set, EWC HA and the capwap aps. If one of the EWC down, still require to check the firmware/code to run?
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09-22-2022 03:09 AM
if all working as expected, if the EWC primary failes, AP will move to Secondary,
Make sure EWC both AP run same code and same models. ( i would refer the document which was posted my first post for reference how you can build HA using EWC)/
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09-22-2022 03:49 AM
Same model is not mandatory but I'd suggest is best practice.
Refer to election process in https://www.cisco.com/c/en/us/products/collateral/wireless/embedded-wireless-controller-catalyst-access-points/white-paper-c11-743398.html#EWCHAactiveandstandby
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
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09-22-2022 04:07 AM
@Rich R - as per my testing if not same model N+1 deployment, we see odd issues around it took from failover take 3min.
Can you also clarify, how about if we use different codes and not supported features ?
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09-22-2022 04:43 AM
Good to know @balaji.bandi - not tried it myself.
Obviously code versions must match and if features aren't supported they just won't work or if they do (by luck) then you can't rely that they'll keep working.
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
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09-23-2022 07:08 AM
Thanks all. Will test the failover and post the result when get the chance. Cheers.
