Migrating to Clean Air

I have a question that I need answered preferably by a Cisco employee or someone who has migrated to Clean Air. We are thinking of migrating to the Cisco 3500 series APs in our environment. I was told a while back that Clean Air is only supported as a fork lift upgrade, meaning all APs would need to be 3500 in order to migrate. I was also told that we could use the 3500s in monitor mode for troubleshooting, but could not intermingle AP models.
I am aware that the code level needs to be at 7.0 to have the features of clean air, but is it true that I can not migrate slowly to replace my present APs? I am in a pretty large wireless environment with multiple WiSMs. There is just no way to do this all at once.
Erick

So will I still be able to see the benefits of the Clean Air technology in a mixed environment? Interestingly, that is not the information I was given initially. Are there any features in the 7.0 code that I will not have be able to take advantage of or are there any gotchas I need to be aware? While the benefits of Clean Air may not be recognized with our b/g clients, will the 3500 APs still service b/g clients for network access?
I found this straight from the Cisco documentation regarding the Clean Air design guide.
Mixing CleanAir LMAP and legacy non CleanAir APs in the same installation
Why should I not mix CleanAir LMAP and Legacy LMAP APs in the same physical area? This question pertains to this use case:
“I currently have non CleanAir APs deployed (1130,1240, 1250, 1140) in local mode. I want to add just a few CleanAir APs to increase my coverage/density. Why can’t I just add some APs and get all the CleanAir features?”
This is not recommended because CleanAir LMAPs only monitor the serving channel and all CleanAir features rely on measurement density for quality. This installation would result in indiscriminate coverage of the band. You could well end up with a channel (or several) that has no CleanAir coverage at all. However with the base installation, you would be using all of the channels available. Assuming RRM is in control (recommended) it is entirely possible that all of the CleanAir APs could be assigned to the same channel in a normal installation. You spread them out to try to get the best spatial coverage possible, and that actually increases the odds of this.
You certainly can deploy a few CleanAir APs in with an existing installation. It is an AP and would function fine from a client and coverage standpoint. CleanAir functionality would be compromised and there is no way to really guarantee what the system would or would not tell you regarding your spectrum. There are far too many options in density and coverage which can be introduced to predict. What would work?
AQ would be valid for the reporting radio only. This means it is only relevant for the channel that it is serving, and this could change at any time.
Interference alerts and zone of impact would be valid. However, any location derived would be suspect. Best to leave that out all together and assume closest AP resolution.
Mitigation strategies would be ill-advised to operate because most of the APs in the deployment would not operate the same way.
You would be able to use the AP to look at spectrum from Spectrum Connect.
You would also have the option to temporarily switch to monitor mode at any time in order to perform a full scan of the environment.
While there are some benefits, it is important to understand the pitfalls and adjust expectations accordingly. It is not recommended, and issues arising from this type of deployment are not supportable based on this deployment model.
A better option if your budget does not support adding APs that do not serve client traffic (MMAP) is to collect enough CleanAir APs to deploy together in a single area. Any area that can be enclosed on a map area can contain a Greenfield CleanAir deployment with full feature support. The only caveat on this would be location. You still need enough density for location.
http://www.cisco.com/en/US/products/ps10315/products_tech_note09186a0080b4bdc1.shtml

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Rogue Ap' s and clean air

Hi
Is there a relation between rogue access point detection and clean air , Rogue access point detection is based on the clean air technology ?

No, its not.
Along with what Salodh suggested, following details might help.
Rogue APs are:
APs which are not recognised by our controller.
APs not been created and managed by our controller.
The controller put those APs in a category called Rogue.
Disclaimer: Proper Authorization required to attack a Rogue AP. For Example its our building, our floor and a rogue AP shows up in the middle of it, at that point we might have the authorization to disrupt the services of that AP.
On the other hand,
CleanAir Technology identifies and resolves RF interference challenges.
The term Air Quality Index ranges from 1 to 100 (where 100 means that the Radio Frequency doesn't have much interference and 1 means that AP needs to make changes)
When and AP detects interference, it rates it by Interference Severity Levels (1=Low Interference Severity and 100=Terrible Interference)
The Interference Severity reduces the AQI levels.
AQI Sensitivity Levels:
High sensitivity: If AQI drops below 60, take action to move channels.
Medium Sensitivity: If AQI drops below 50, take action to move channels.
Low Sensitivity: If AQI drops below 35, take action to move channels.

5760 WLC Clean Air question

Hi,
My customer Cisco 5760 WLCs running as a HA pair. Clean Air has been configured on these boxes but when I do a sh ap dot11 5ghz cleanair summary all the APs show Spectrum Oper State as Down:-
CPIT-5760-WLC-1#sh ap dot11 5ghz cleanair summary
AP Name               MAC Address         Slot ID Spectrum Capable Spectrum Intelligence   Spectrum Oper State
AP1                   xxxx.xxxx.xxxx            1 Enabled           Enabled                 Down
AP2                   xxxx.xxxx.xxxx            1 Enabled           Enabled                 Down
AP3                   xxxx.xxxx.xxxx            1 Enabled           Enabled                 Down
Anyone got any ideas as to how I overcome this little obstacle?
Thanks
Alan

Thanks for the reply. As far as I can tell all the radios are operational:-
and Clean Air has been configured:-
ap dot11 24ghz cleanair
ap dot11 5ghz cleanair
Also the link you sent was for release 7 on the old series controllers whereas this is a HA pair of the 5760s running release 3.03.
I have been through the configuring Clean Air chapter for this release and it doesn't suggest anything I haven't already tried.
Alan

Clean Air - WLC 5508

Hello
Do I need to buy additional license for clean air to work, currently my BOQ cover
WLC 5508 with 50 AP license ( part no : AIR-CT5508-50-K9 )
20 AP ( model 3502 )
Redundant Power supply
LIC-CT5508-50 ( is this required to be mentioned )
Also I would like to understand are there any better model than AP 3502 & newer WLC model than 5508 ( I would have application users accessing application via Wireless LAN )
thanks
ST

Thank you Scott for the guide will have a look at that.
5500 series WLC got 8SFP uplinks hence;-
Can we Group 2 or more SFP for a specific SSID only configured on WLC and other SSID to route traffic from other uplink ports
Uplinks from WLC to Core are generally configured for failover or link aggregation
On WLC there are 5 SSID configured for example , the AP installed in HR room should broadcast only ONE SSID ( is this possible )
thanks
ST

AP with Clean-air Express and 3650 controller

Hi,
Is Clean-air express supported on the 3650 wireless controller with 1602e APs? The Clean-air options on the controller are available but do not seem to be active. In the controller gui the Clean-air admin status is disabled and the Clean-air operation status is down. I did confirm the Clean Air option is enabled on the config menu for the b/g/n band. Am I missing something here or are these AP's just not supported? Thanks!

CleanAir Express is different than CleanAir. Express means that the AP does the function of detection, not the controller. 1600's & 1700's run CleanAir Express and you don't have the 100% functionality of CleanAir with these access points.
-Scott

Clean air installation

Why would I deploy all clean air APs that are single radio g/n only. Am I not losing the advantages of 802.11n by not having bonded channels. And if I am concerned enough about interferers to deploy all clean air APs, should I not have 5 GHz available to mitigate the interference?

The Mavericks on the Air is probably machine specific since it came pre-installed, so it wouldn't work on your computer. See if your friend will let you access the App Store, where you can sign in using your Apple ID and download the installer. You can use this free program to copy the installer and update your computer.
Bootable USB Flash Drive – Diskmaker X

Ncs, wlc and clean air

Hi,
we have this:
1x wlc 5508 7.2.103
1x cisco prime infrasture physical appliance 1.2
And for test of clean air 1x ap 3600 series
But i have a question if i would like see bluetooth device in neighborhood.D you really have to other device?
On the cisco web i founded 3355 or virtual appliance.Do I need this device?
Thank you
Sent from Cisco Technical Support iPad App

You need, a minimum, the AP and the WLC if you want to see how BT is being detected.
CPI is only for show-and-tell.

Difference between Clean Air 3.0 and Clean Air Expres

Hi Community.
There are some papers which show the difference, but these aren't very clear.
As i know Clean Air 3.0 will automatically adjust power level, etc. and Clean Air Express doesn't. Is that right, or what should be the main fifference? The CAP1702 (whit Clean Air express) is much cheaper than a CAP2702 (with Clean Air 3.0).
thanks in advance and kind regards patrick

It's best to compare the data sheets for each access point, but I would probably lean towards the 2700e, 3600e or 3700e for what you are trying to accomplish. Of course, this will depend upon the size of the organization and budget.
Clean Air White Paper
http://www.cisco.com/c/dam/en/us/solutions/collateral/enterprise-networks/cleanair-technology/aag_c22-594304.pdf
Data Sheets for 1600 & 2700
http://www.cisco.com/c/en/us/products/collateral/wireless/aironet-1600-series/data_sheet_c78-715702.html
http://www.cisco.com/c/en/us/products/wireless/aironet-2700-series-access-point/index.html
From an 11n perspective, there are a couple of differences that make the 2700 more suitable for this environment, but that's not to say that the 1600 won't work. The 2700 also supports 11ac.
For more details please refer to the post-
https://supportforums.cisco.com/discussion/12219071/1602-cleanair-coverage-mse

Clean Air doesn´t work

Hello All,
I have 10 Ap´s in a building under a WLC5508 with CleanAir activated, however when the users, turn on a MW oven, the clients located near, lost completely their connections.
I have activated the EDRRM, but the interference is in all channels, therefore the loss of signal keep it.
Someone could tell me if this is normal or I have do any adjustment on the config of Clean Air?
Thanks in advance!

Hey Leo,
Forget Microwave ovens, you should work for these guys +5
http://www.kegerator.com/Beer-Refrigerator-Beer-Bottle-Can-Cooler/Beer_Coolers,default,sc.html?psortb1=category-pos_Beer_Coolers
Cheers!
Huff

Clean Air Express

Hello)
I have the question and I didnt find good explanation about it((( So I have Cisco 1602 which supports Clean Air Express. Does it change the channel when detect interferrer? Or not? On cisco.com it just says "makes adjustments to optimize coverage"((( Please clarify what does it mean?

When I say 'is done on software", the analysis of the interference is done on software. Unlike the other models, this stage is done with a dedicated hardware, thereby leaving the APs CPU with more space to do other stuff.
With CleanAir being done on software, this process is slower in some cases as the CPU has to share resources with other processes.
Go to Wireless > 802.11a > CleanAir and see if CleanAir is enabled globally.

Clean Air in 1552 Mesh Topology

Hi,
Is Clean Air supported on MAP and RAP 1552E at a 2,4 Ghz in a mesh toplogy.?????
at web cisco page: "cleanAir is supported on mesh AP backhaul at a 5-GHz radio of mesh"
Thanks,
Marco Muñoz

Yes it is supported on the 1552 on both. The 5ghz though you have to hard set the channels so it will not switch channels
Sent from Cisco Technical Support iPhone App

Clean Air Technology

Good day guys!
I would like to ask if a Mobility Service Engine is really needed to make Clean Air functional on a Cisco 3500?
Thanks!

No. All you need is 7.X to run on the WLC.
One thing though ... For CleanAir to function optimally, it's recommended that you use 3500i/e exclusively. You can't (you can but CleanAir won't run clean, excuse the pun) mix the 3500 with other non-CleanAir APs.

Clean air

hi,
what is cisco clean air?
I have WLC 4404 and 1242AG AP...
can i configure this on wlc and ap?
if yes, how

Cisco CleanAir Technology
I have WLC 4404 and 1242AG AP...can i configure this on wlc and ap?
No. Only the 3500 WAP supports CleanAir.

Clean Air Specifics

Hi,
It is my understanding that when I enable Cisco Clean-Air on my 2602 AP's that currently host my SSID's it will still scan all channels. I spoke to a colleague who tells me that it will not scan all channels and instead will only scan the active channel. That colleague tells me that the only way for Clean-Air to scan all channels is for the AP to be dedicated for that purpose (Clean-Air).
Experts, which is the correct answer?
Thanks.

If its in to local mode it will scan only the active channel .. You can read about monitor mode and spectrum mode in the below link ..
http://www.cisco.com/en/US/products/ps10315/products_tech_note09186a0080b4bdc1.shtml
CleanAir AP Modes of Operation
Local Mode AP (recommended) (LMAP)—A Cisco CleanAir AP operating in LMAP mode is serving clients on it’s assigned channel. It is also monitoring the Spectrum on that channel and that channel ONLY. Tight silicon integration with the Wi-Fi radio allows the CleanAir hardware to listen between traffic on the channel that is currently being served with absolutely no penalty to throughput of attached clients. That is line rate detection without interrupting client traffic.
There are no CleanAir dwells processed during normal off channel scans. In normal operation, a CUWN Local Mode AP executes an off channel passive scans of the alternate available channels in 2.4 GHz and 5 GHz. Off channel scans are used for system maintenance such as RRM metrics and rogue detection. The frequency of these scans is not sufficient to collect back to back dwells required for positive device classification, so information gleaned during this scan is suppressed by the system. Increasing the frequency of off channel scans is also not desirable, as it takes away from time that the radio services traffic.
What does this all mean?
A CleanAir AP in LMAP mode only scans one channel of each band continuously. In normal enterprise densities there should be plenty of APs on the same channel, and at least one on each channel assuming RRM is handling channel selection. An interference source that uses narrow band modulation (operates on or around a single frequency) is only detected by APs that share that frequency space. If the interference is a frequency hopping type (uses multiple frequencies – generally covering the whole band) it is detected by every AP that can hear it operating in the band.
"Satisfaction does not come from knowing the solution, it comes from knowing why." - Rosalind Franklin
‎"I'm in a serious relationship with my Wi-Fi. You could say we have a connection."

Loss of AP signal strength after upgrading to Clean Air on 5508's.

After upgrading three 5508's (which support 150 AP's) from WLC/WCS version 6.0.182.0 to version 7.0.98.0, our users complained about low signal strength. Our pre-upgrade RSSI benchmarks confirmed a decrease of -10dB to -20dB signal strength across all AP's, effectively causing wireless networking to be unusable in key areas.
After confirming our Global signal strength settings in WCS and WLC's were still at the same settings they were at prior to upgrading, we contacted our VAR for advice.
He suggested that perhaps the upgrade caused all AP's to run at a lower signal strength. He was right.
At his recommendation, we reconfigured the WCS to set two AP's to use Individual mode instead of Global mode. This is found in Radios/802.11b/g/n/Tx Power Level Assignment. Setting them to level 2 resulted in an average -15dB increase of RSSI, solving our problems in the test environment. In one case we saw an increase of -30 dB for one AP.
The signal strength loss due to the upgrade was not expected, based on the upgrade documentation. Now we must change the settings manually on the remaining 148 AP's.
I'd like to hear from anyone else who has experienced a decrease in signal strength after upgrading to Clean Air 7. If you have information from Cisco that documents this problem, I'd REALLY like to read it.
Hoping this may help you,
RS

Hi Rick,
this is not "expected" or "on purpose". It just happens that improving the RRM algorithm makes things better for 90% of the people but maybe worse for 10% of the people.
This is why you can set the Tx power treshold on the RRM or set the overal RRM algorithm sensitivity.
If you put the Tx power treshold to a louder number (=closer to 0) then the APs will reduce less their power level.
Hope this helps.
Nicolas
===
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Migrating to Clean Air

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