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  • About wifisyfy
wifisyfy

wifisyfy

Here to help

Member since Dec 6, 2017

‎05-04-2022
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Latest Contributions by wifisyfy
  • Topics wifisyfy has Participated In
  • Latest Contributions by wifisyfy

Re: About 5g channel width problem

by wifisyfy in Wireless LAN
‎08-19-2019 06:58 AM
‎08-19-2019 06:58 AM
Any traction on this feature request I wonder? ... View more

Re: Clients connect to SSID, but no data is sent after association

by wifisyfy in Wireless LAN
‎09-27-2018 06:48 AM
‎09-27-2018 06:48 AM
Hello,    OP here.  So I never did get a resolution from Meraki.  I spent hours on the phone with Meraki support and took countless pcaps.   I eventually had to give up because I don't have a device that can capture in monitor-mode and supports 802.11ac on 20/40/80Ghz bands.  I have had a hard time tracking anything down that can do this, short of a new model Macbook Pro...but seriously there has to be something other than a Macbook that can adequately run 802.11ac monitor-mode?   Another thing that was frustrating was an apparent bug that Meraki has in their own AP capture mechanism, where capturing on the AP doesn't show 2-way traffic.  I forget the specifics but at the time i was like "seriously guys?"   So, the only fix I have when this issue crops up is to still reboot the AP, or fiddle with a setting that resets the radio.   If anybody has a suggestion for a rig I can setup remotely to capture 802.11ac monitor-mode, that would be really great. ... View more

Re: About 5g channel width problem

by wifisyfy in Wireless LAN
‎07-21-2018 06:58 AM
‎07-21-2018 06:58 AM
I am seeing this myself...I have an MR42 AP configured to use 40MHz channel-width, but my client device is reporting connected at 80MHz.     ... View more

Re: Clients connect to SSID, but no data is sent after association

by wifisyfy in Wireless LAN
‎07-21-2018 06:46 AM
‎07-21-2018 06:46 AM
I'm considering the possibility that my capture device is perhaps not capturing the data for some reason, but is capturing "control packets" such as association probes,  RTS/CTS and null functions.     Could this be the case?   My capture device is an older MacBook Air.   I can only capture on 20MHz or 40MHz channel-width.   Would this make a different if my client device was running at 80MHz?    ... View more

Re: Clients connect to SSID, but no data is sent after association

by wifisyfy in Wireless LAN
‎07-20-2018 01:11 PM
‎07-20-2018 01:11 PM
Yes, 25.11.  With the first go-round with Meraki support they said upgrading to 25.11 should address the issue.  It did not. ... View more

Clients connect to SSID, but no data is sent after association

by wifisyfy in Wireless LAN
‎07-20-2018 12:11 PM
‎07-20-2018 12:11 PM
Hello,    I've observed this mainly on iOS 11.x devices and some Android devices running Oreo.   This has been ongoing for months.  The "fix" is to reboot the AP, or any sort of change to the AP that will reset the radio (such as modifying channel-width or client load balancing and such).     I'm using the MR42 platform.   I've run several pcaps when the issue occurs, and what I see is associate probes, probe responses, authentication completes and association is successful.  The following is a series of client RTS and AP CTS packets.  But that's it.  No data.  The client just keeps asking over and over "Ready to Send" and the BSSID will respond with "Clear to Send" but the client never sends data.   Because I'm running NAT mode with Meraki DHCP, a DHCP address is never obtained because absolutely no data is ever sent, even though the client is associated.   I've been going back and forth with 3 different Meraki support engineers on this.   A couple things I've noticed:   I have 2 old iOS 9.3.5 devices that don't have this problem at all.   Only updated 11.x devices.   When I run into an AP that is acting up, I will walk around to a different AP and it will  associate and work fine.   As mentioned before, any sort of reboot or state change or radio reset on the AP will temporarily fix the problem.   So...anybody run into this?   ... View more

Re: No Internet Connection

by wifisyfy in Wireless LAN
‎05-17-2018 06:27 AM
‎05-17-2018 06:27 AM
I'll check on that.  Thanks for the suggestion!   I don't imagine there are that many devices passing through, but definitely worth checking out.   This is the point where I say the inevitable regarding Meraki products...I sure wish there was a way for me to get down into the weeds of the system when I need to.  Would save alot of time going back and forth with support.   ... View more

Re: No Internet Connection

by wifisyfy in Wireless LAN
‎05-16-2018 12:58 PM
‎05-16-2018 12:58 PM
Thanks every for their replies so far. I have some more info, as I have been able to work on this a little more today. I ran into this problem...and identified the AP. I was getting "No Internet Connection" and noticed I was associating with the AP but the DHCP address was not being assigned (stuck on the 169.x auto-config address). I rebooted the AP remotely. As soon as the AP came back up, I connected right away and 3 other iOS devices in the vicinity also connected right away. Previous to this, only a single android device was connected for 2 hours. So...i'm using "Meraki DHCP" on these...which I assume is a dhcp service on the AP unit itself. Is there any way I can dig into the logs of this dhcp service or the AP? ... View more

Re: No Internet Connection

by wifisyfy in Wireless LAN
‎05-15-2018 02:53 PM
‎05-15-2018 02:53 PM
Thanks for your response.  Yes, all 300 users use the same internet connection for various things.   If the internet was down, I would definitely know about it. ... View more

Re: No Internet Connection

by wifisyfy in Wireless LAN
‎05-15-2018 02:25 PM
‎05-15-2018 02:25 PM
Thanks Philip.   I'm not entirely sure.  I have it set such that the AP handles the DHCP internally using "Meraki DHCP".   If their internal DHCP database was exhausted, I think that would show up in some logs perhaps?  I haven't actually looked for that sort of thing.  Sounds like i should do some reading on how Meraki DHCP works.  Thanks for the lead! ... View more

No Internet Connection

by wifisyfy in Wireless LAN
‎05-15-2018 02:08 PM
‎05-15-2018 02:08 PM
Hello,    I have 2 interconnected buildings with 35 APs total.  About 300 wireless devices (mostly phones, some tablets) connected to the wifi system on a daily basis.  My APs are all MR42 on the floors and MR52 in my boardrooms.  I have 2 internet connections with different ISPs and the connections run active/active.   Over the past few months, and in only 1 of the buildings, my users have been reporting they can connect to the wifi, but then (in iOS) it will say "No Internet Connection" with that familiar orange exclamation mark.  This happens across all SSIDs.   So, I don't know where to start looking here.  Only 1 building affected.  All devices run the same firmware and share the same internet.  And the issue is intermittent and it *seems* like when it happens it hits a particular AP all at once..but this is only anecdotal i have no read evidence.   The fact it's only ever been reported from one building tells me it's something in this building...but I can't rule out perhaps a few wonky AP units that may be misrepresenting the issue here.   Any pointers on where to start looking?   Also, bonus question:  Anybody know the exact mechanism iOS uses to determine internet connectivity?  What specifically has to fail for iOS to report "No Internet Connection"?  Is it a DNS request?  an HTTP GET?  Anybody know?   Thanks.     ... View more

is there a definitive way to determine a problem is interference or not?

by wifisyfy in Wireless LAN
‎12-06-2017 07:42 AM
‎12-06-2017 07:42 AM
I have a mixture of about 35 MR42s and MR52s rolled out across a couple buildings.  I manage them remotely.  These things pretty much take care of themselves and have been great.  However when wifi users run into problems, they are usually very tough to pinpoint a cause...the symptoms are transient but usually narrow down signal issues.   Is there a tool I can use (remotely) that can tell me "ok yeah, that area right there...there's interference, signal loss etc." or even something in the event logs that may indicate a weak signal, interference.   thanks. ... View more
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Kind of a big deal PhilipDAth
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