Hi SYGY I don't know enough about COS APs to answer your question although there are some previous posts you might want to search for but I think they mostly point towards the need to talk to TAC if you're at that point. But I did just want to clarify that fsck does NOT format the flash on an IOS AP - it's a checkdisk - it just checks the consistency of the file system and corrects any errors and recovers any orphaned files/blocks. The command for formatting the flash is (not surprisingly) format :) Rich ... View more

And also just to add that Cisco does also have virtual versions of their WLC too - but they obviously have some limitations compared to hardware applicances. https://www.cisco.com/c/en/us/products/wireless/virtual-wireless-controller/index.html (old) https://www.cisco.com/c/en/us/products/collateral/wireless/catalyst-9800-cl-wireless-controller-cloud/nb-06-cat9800-cl-cloud-wirel-data-sheet-ctp-en.html (new) ... View more

You should always specify what version of code you are running? But yes this looks like a known bug https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvg70620 Workaround: To stop the logs, admin disable the port: config port adminmode 5 disable It's logged as a sev 5 (cosmetic) bug so low priority for fixing (if ever) A quick search of bug search tool with keywords "3504 mgig" produced this result in 1 of 8 matches so you could do that yourself too ;)   ... View more

But why would you want to run mesh if you have cables? Are you expecting the cables to be unreliable? ... View more

Yes those are the data rates. Found a nice summary here: https://www.wlanpros.com/resources/mcs-index-802-11ac-vht-chart/   ... View more

When you say you 'loaded through TFTP' do you mean you simply copied the .tar file onto the flash or you actually installed it? To be clear - in order to install the software on an AP you need to use the command: archive download-sw tftp://A.B.C.D/<k9w7-image>.tar That downloads the tar file, extracts the contents to flash and sets the boot variables to use the new image on next reload. Is that what you did? What is the output of show boot?   ... View more

We have an app that does that but I am not a developer so don't know the precise details - just how it operates at high level. On Android the app must 'claim/register' the SSID(s) with the OS API and is then notified when device joins a registered SSID. App then initiates an http connection to internet which is redirected by the captive portal. App can read the content and/or headers of that response for different types of hotspots. When it recognises the redirect from WLC it posts the login to WLC same as a client would from a web page. All this happens 'under the hood' no user interaction required. We've also recently found on latest releases of Android this doesn't work if app doesn't have location permission (presumably because SSID can be used to help with location). ... View more

You don't mention what OS you're trying to write the app on - each is slightly different. This isn't actually a wireless question - it's a software development question. But I'll try to answer it anyway... The app needs to trigger when the device joins the SSID which you're interested in and then it needs to attempt a connection to trigger the captive portal redirect (at API/app level not user interaction) at which point it can then post the login credentials to the WLC and the user should be logged in. Make sense? ... View more

Ok so NAT was an obvious possibility because we've seen it with that - IOS maintains NAT translations via the old path even when the routing switches and old path is down so NAT translations need to be cleared. I guess you're going to have to look at other features which might do the same - maybe firewall? If you can't work it out then best to open a case with Cisco TAC. Also stating the obvious but your WLC code is out of date and there are a LOT of fixes which have gone in since 8.5.131.0 so I'd seriously consider updating the code before opening a TAC case because that's probably the first thing they'll tell you (current is 8.5.160.0 and I know there are some bugs fixed which can cause problems with AP joins). But I see there's a warning for 8.5.160.0 "For AP1800/2800/3800 with Flexconnect local switching Deployments, Please continue to use 8.5.151.0 Images" so if you're using local switching on your 2802's then stick to 8.5.151.0. ... View more

Exactly as Pat said - read all the release notes and associated bug fixes (which include feature change/enhancements) between those versions. ... View more

Are you using NAT between the AP and WLC? ... View more