5Ghz DCA

[hs08]

I have wlc 2504 and C9800, both WLC use same country.

In WLC C9800 i can see i have channel under 100

But why in WLC 2504 i only have channel above 100?

[Leo Laohoo]

1.  Depending on what country the APs are, avoid enabling UNII-2e channels because this is in the same frequency as Doppler radars.  

2.  And just because the WLC is configured for UNII-3 (the one from AireOS), there is a growing trend to use WiFi-based motion sensors and they predominantly are on UNII-3 channels.  

3.  As to why the AireOS controller is only configured for UNII-3, nobody knows, however, if this controller is configured for 40 Mhz channel width (and above), 5.0 Ghz would be totally useless.  

[Saikat Nandy]

Can I have the output 'show run-config' from 2504.

[hs08]

Send to you by DM. Thanks

[Saikat Nandy]

Thanks @hs08 . here is the answer to your query.

The country code set in the WLC is Indonesia. Historically Indonesia had limitation with the number of allowed channels in 5Ghz. It's been few years since that has been lifted. Previously only UNII-3 channel (from 149 onwards) were allowed. But it has been changed. This is the reason why you are seeing the discrepancy. Here are the few docs/community blogs to refer - 
https://discussions.apple.com/thread/252441216?sortBy=rank
https://community.intel.com/t5/Wireless/Regulatory-update-for-Indonesia-channels-36-40/td-p/1585811
Hope this helps.

[hs08]

but why in my WLC9800 with same country i get channel under 100?

[Saikat Nandy]

cz 9800 is new and have the latest codes. I have tested a 3504 on 8.10 version and can see UNII-I/II/III channels. So it's the old code at this point.

  

[hs08]

so it's depend on WLC software version right? Currently i use version 8.5.182.0 and this is latest version in cisco if i check now. 

[Mark Elsen]

  - @hs08  Ref : https://www.cisco.com/c/en/us/support/docs/wireless/wireless-lan-controller-software/200046-tac-recommended-aireos.html
                Latest version is 8.5.182.12 for 2504 : ==>  https://software.cisco.com/download/specialrelease/9a6a7cf84f9fdf04b95c76e2ac7820e7

  M.

[hs08]

Thanks @Mark Elsen 

Strange, if i search manually for 2504 i'm only can see 8.5.182.0 is latest version.

[Scott Fella]

@hs08 that is because the latest version for the 2504 is 8.5.x

[Mark Elsen]

  - @hs08   - The version  I mentioned from the recommended releases document is the effective last version for the 2504 controller. Cisco should be consistent and when they advertise a last release for a retiring platform and they should offer that version in Software Downloads too!

  M

[Saikat Nandy · Accepted solution]

@hs08 @Mark Elsen if you are looking for 8.5.182.12, here is the link for you - https://software.cisco.com/download/specialrelease/9a6a7cf84f9fdf04b95c76e2ac7820e7
Just to clarify one more thing - if you are under the assumption that .12 will help you getting more channels for ID, then it is wrong. 182.12 is an engineering special and has some specific bug fixes. Your WLC is already on .182 and you are not seeing all the channels. Which means .12 will also not help you here.

[Rich R]

8.5.182.12 is a special engineering release which is why it is not on the general downloads page - although agreed with @Mark Elsen that it really should be because it is the last publicly available release for 2504.

But also as @Mark Elsen said - you should always refer to the TAC Code recommendations (linked in my signature below, and in all my posts) 
Recommended AireOS Wireless LAN Controller Releases - AireOS 8.5 

[Scott Fella]

Keep in mind that when a code version is released it has what is allowed at that point in time. If there is any change to channels, like in your case from the regulatory domain, then later code version will make that change then.  So take a look at when your AireOS code and your 9800 code was released, because things do change.  This also goes for features and support of features. This is something you will see more as AireOS is no longer being developed and folks start or have implemented the 9800's alongside their existing AireOS controllers.