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MVP
Posts: 1,110
Registered: ‎10-11-2011

iOS Connectivity Issues on Any SSID

I'm noticing an issue with a couple of iPads when I connect them to any SSID (WPA2 or Open).  Here are two separate issues I've noticed:

 

1) After tapping on the SSID, it takes 5-10 seconds to get an IP address.

 

2) After tapping on the SSID, the connection indicator spins and spins and spins... I get tired of waiting and turn off wifi and re-enable.  The iPad then connects to the SSID almost immediately.

 

I haven't noticed this with other devices, but I'm not completely sure it's just an iOS issue.  At home (using my consumer router) I don't have these issues.  Any thoughts?

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Guru Elite
Posts: 20,960
Registered: ‎03-29-2007

Re: iOS Connectivity Issues on Any SSID

What kind of encryption?

We would need to look at the user-debug log and the auth-tracebuf to see what is going on behind the scenes to even guess what is going on.

 



Colin Joseph
Aruba Customer Engineering

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MVP
Posts: 1,110
Registered: ‎10-11-2011

Re: iOS Connectivity Issues on Any SSID

This is independant of encryption because I'm seeing it on WPA2 and Open SSIDs.

 

I discovered that I can recreate the issue at-will.  Once connected to a network, WPA2 in this example, and then connect to my open SSID, the connection icon just spins.  While it's spinning (stalled), I can tap the blue icon to see details about the network connection, and it shows I have an IP address.  The MAC shows that it's associated to an AP, but I can't find that IP address in the user table and it's not pingable.

 

auth-tracebuf only shows:

 

Oct 29 12:24:30  mac-auth-req

Oct 29 12:24:30  mac-auth-fail

Oct 29 12:24:30  station-up

Oct 29 12:24:30  station-data-ready

 

An auth-tracebuf from a connection that doesn't stall out looks identical.

 

I compared a healthy connection user-debug  to one that stalls out, and the two look similar up till this point:

 

Oct 29 12:25:36 :524124:  <DBUG> |authmgr|  dot1x_supplicant_up(): MAC:a4:d1:d2:xx:xx:xx, pmkid_present:False, pmkid:N/A

 

The stalled iPad, doesn't log any further, but the healthy connection continues to log more.

 

If you don't have any thoughts on the matter I'll open up a TAC case.

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