Iphone 6 fails association in wpa2-psk on WLC code 7.6.130.0 & 8.1.102.0 :(

Muhammed Adnan · ‎07-14-2015

Hello Experts,

I have a WLAN setup comprising of 2508 WLC and 1600 series APs. I have WLANs configured in WPA-2 PSK, and could associate all my android & windows clients without any issues.

The only IOS device that I have is IPhone 6(IOS and when I try it associating with the WLAN then it fails. Only after keep trying it random number of times it goes through.

To add to my agony, the issue persists on both 7.6.130.0 & 8.1.102.0.

Can anyone please help me know a work around for this issue to help things keep going smoothly even for Iphone 6?

With 8.0.120.0, even andriod and windows clients were failing to get an IP addr

Best Regards,

Muhammed Adnan · ‎07-14-2015

WLAN config for reference:

(Cisco Controller) >show wlan 5

WLAN Identifier.................................. 5
Profile Name..................................... Test
Network Name (SSID).............................. Test
Status........................................... Enabled
MAC Filtering.................................... Disabled
Broadcast SSID................................... Enabled
AAA Policy Override.............................. Disabled
Network Admission Control
Client Profiling Status
Radius Profiling ............................ Disabled
DHCP ....................................... Disabled
HTTP ....................................... Disabled
Local Profiling ............................. Disabled
DHCP ....................................... Disabled
HTTP ....................................... Disabled
Radius-NAC State............................... Disabled
SNMP-NAC State................................. Disabled
Quarantine VLAN................................ 0
Maximum number of Associated Clients............. 0
Maximum number of Clients per AP Radio........... 200

--More-- or (q)uit
Number of Active Clients......................... 1
Exclusionlist Timeout............................ 60 seconds
Session Timeout.................................. 65535 seconds
User Idle Timeout................................ 86400 seconds
Sleep Client..................................... disable
Sleep Client Timeout............................. 12 hours
User Idle Threshold.............................. 0 Bytes
NAS-identifier................................... WLC01
CHD per WLAN..................................... Enabled
Webauth DHCP exclusion........................... Disabled
Interface........................................ wireless_family
Multicast Interface.............................. Not Configured
WLAN IPv4 ACL.................................... unconfigured
WLAN IPv6 ACL.................................... unconfigured
WLAN Layer2 ACL.................................. unconfigured
mDNS Status...................................... Enabled
mDNS Profile Name................................ default-mdns-profile
DHCP Server...................................... Default
DHCP Address Assignment Required................. Disabled
Static IP client tunneling....................... Disabled
Quality of Service............................... Silver
Per-SSID Rate Limits............................. Upstream Downstream
Average Data Rate................................ 0 0

--More-- or (q)uit
Average Realtime Data Rate....................... 0 0
Burst Data Rate.................................. 0 0
Burst Realtime Data Rate......................... 0 0
Per-Client Rate Limits........................... Upstream Downstream
Average Data Rate................................ 0 0
Average Realtime Data Rate....................... 0 0
Burst Data Rate.................................. 0 0
Burst Realtime Data Rate......................... 0 0
Scan Defer Priority.............................. 4,5,6
Scan Defer Time.................................. 100 milliseconds
WMM.............................................. Allowed
WMM UAPSD Compliant Client Support............... Disabled
Media Stream Multicast-direct.................... Disabled
CCX - AironetIe Support.......................... Enabled
CCX - Gratuitous ProbeResponse (GPR)............. Disabled
CCX - Diagnostics Channel Capability............. Disabled
Dot11-Phone Mode (7920).......................... Disabled
Wired Protocol................................... None
Passive Client Feature........................... Disabled
Peer-to-Peer Blocking Action..................... Disabled
Radio Policy..................................... All
DTIM period for 802.11a radio.................... 1
DTIM period for 802.11b radio.................... 1

--More-- or (q)uit
Radius Servers
Authentication................................ Global Servers
Accounting.................................... Global Servers
Interim Update............................. Disabled
Framed IPv6 Acct AVP ...................... Prefix
Dynamic Interface............................. Disabled
Dynamic Interface Priority.................... wlan
Local EAP Authentication......................... Disabled
Security

802.11 Authentication:........................ Open System
FT Support.................................... Disabled
Static WEP Keys............................... Disabled
802.1X........................................ Disabled
Wi-Fi Protected Access (WPA/WPA2)............. Enabled
WPA (SSN IE)............................... Enabled
TKIP Cipher............................. Enabled
AES Cipher.............................. Enabled
WPA2 (RSN IE).............................. Enabled
TKIP Cipher............................. Enabled
AES Cipher.............................. Enabled
Auth Key Management
802.1x.................................. Disabled

--More-- or (q)uit
PSK..................................... Enabled
CCKM.................................... Disabled
FT-1X(802.11r).......................... Disabled
FT-PSK(802.11r)......................... Disabled
PMF-1X(802.11w)......................... Disabled
PMF-PSK(802.11w)........................ Disabled
FT Reassociation Timeout................... 20
FT Over-The-DS mode........................ Enabled
GTK Randomization.......................... Disabled
SKC Cache Support.......................... Disabled
CCKM TSF Tolerance......................... 1000
WAPI.......................................... Disabled
Wi-Fi Direct policy configured................ Disabled
EAP-Passthrough............................... Disabled
CKIP ......................................... Disabled
Web Based Authentication...................... Disabled
Web-Passthrough............................... Disabled
Conditional Web Redirect...................... Disabled
Splash-Page Web Redirect...................... Disabled
Auto Anchor................................... Disabled
FlexConnect Local Switching................... Disabled
flexconnect Central Dhcp Flag................. Disabled
flexconnect nat-pat Flag...................... Disabled

--More-- or (q)uit
flexconnect Dns Override Flag................. Disabled
flexconnect PPPoE pass-through................ Disabled
flexconnect local-switching IP-source-guar.... Disabled
FlexConnect Vlan based Central Switching ..... Disabled
FlexConnect Local Authentication.............. Disabled
FlexConnect Learn IP Address.................. Enabled
Client MFP.................................... Optional
PMF........................................... Disabled
PMF Association Comeback Time................. 1
PMF SA Query RetryTimeout..................... 200
Tkip MIC Countermeasure Hold-down Timer....... 60
Eap-params.................................... Disabled
AVC Visibilty.................................... Disabled
AVC Profile Name................................. None
Flow Monitor Name................................ None
Split Tunnel (Printers).......................... Disabled
Call Snooping.................................... Disabled
Roamed Call Re-Anchor Policy..................... Disabled
SIP CAC Fail Send-486-Busy Policy................ Enabled
SIP CAC Fail Send Dis-Association Policy......... Disabled
KTS based CAC Policy............................. Disabled
Assisted Roaming Prediction Optimization......... Disabled
802.11k Neighbor List............................ Disabled

--More-- or (q)uit
802.11k Neighbor List Dual Band.................. Disabled
Band Select...................................... Disabled
Load Balancing................................... Disabled
Multicast Buffer................................. Disabled

Mobility Anchor List
WLAN ID IP Address Status
------- --------------- ------

802.11u........................................ Disabled

MSAP Services.................................. Disabled

Local Policy
----------------
Priority Policy Name
-------- ---------------

Muhammed Adnan · ‎08-18-2015

fyi

Enabling "Fast SSID Change" helped to mitigate the issue :)

ajc · ‎08-18-2015

Following this post. Actually I am having another issue with IPHONE 6 which keeps switching from the WiFi SSID to the mobile provider network. Have you experience this issue as well?

Scott Fella · ‎08-18-2015

Abraham,

What issues are you seeing in detail? I have an iPhone 6 with the latest firmware and I have tested this with various controller code with no issues. The OP had settings that don't work well with Apple devices:

Wi-Fi Protected Access (WPA/WPA2)............. Enabled
WPA (SSN IE)............................... Enabled
TKIP Cipher............................. Enabled
AES Cipher.............................. Enabled
WPA2 (RSN IE).............................. Enabled
TKIP Cipher............................. Enabled
AES Cipher.............................. Enabled

Enabling all encryptions is the issue here, so try to provide more detail on your issue if possible.

-Scott

-Scott
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ajc · ‎08-18-2015

Thanks Scott for answering. Sorry, what you mean with OP?

We are using regular webauth external ISE as AAA, the enduser can authenticate with no issues but suddenly his connection is switched from the WiFi SSID to the regular mobile provider.

We have configured the session timeout on that specific SSID to 43200 secs and the same for the IDLE timeout so I have no idea why this Iphone 6 keeps doing it and that is why I am asking the question here in case muhammed also experienced the same issue.

We have not seen this condition on IPADs (including air) running 8.2 or above even though those devices do not have mobile access.

If there any specific debug you think I could post?