このチートシートをワイヤレスに関する一般的な問題に使用する (2024)

はじめに

このドキュメントでは、一般的なワイヤレスの問題をデバッグ（通常はdebug client <mac address>）で解析したチートシートについて説明します。

前提条件

要件

このドキュメントに関する固有の要件はありません。

使用するコンポーネント

このドキュメントの情報は、すべてのAireOSコントローラに基づくものです。

• コントローラ：440x、5508、5520、75xx、85xx、2504、3504、およびvWLC、WISM。
• Converged Access IOS® XEコントローラおよびスイッチでは多くの概念が同じですが、出力とデバッグが根本的に異なるため、このドキュメントの対象外です。

このドキュメントの情報は、特定のラボ環境にあるデバイスに基づいて作成されました。このドキュメントで使用するすべてのデバイスは、クリアな（デフォルト）設定で作業を開始しています。本稼働中のネットワークでは、各コマンドによって起こる可能性がある影響を十分確認してください。

show client の出力における PEM 状態の概要

show clientとデバッグで解析するには、まず電源入力モジュール(PEM)の状態とAPFの状態を理解する必要があります。

• START：新しいクライアント エントリの初期ステータス。
• AUTHCHECK：実施する L2 認証ポリシーが WLAN にあります。
• 8021X_REQD：クライアントは 802.1x 認証を完了する必要があります。
• L2AUTHCOMPLETE：クライアントはL2ポリシーを正常に終了しました。プロセスはL3ポリシー（アドレス学習、Web認証など）に進むことができます。これが同じモビリティグループ内のローミングクライアントである場合、コントローラはモビリティアナウンスを送信して、他のコントローラからL3情報を学習します。
• WEP_REQD：クライアントは WEP 認証を完了する必要があります。
• DHCP_REQD：コントローラは、L3アドレスをクライアントから学習します。これは、ARP要求、DHCP要求、更新、またはモビリティグループ内の他のコントローラから学習した情報によって実行されます。必要な DHCP が WLAN でマークされている場合は、DHCP またはモビリティ情報のみが使用されます。
• WEBAUTH_REQD：クライアントは Web 認証を完了する必要があります（L3 ポリシー）。
• CENTRAL_WEBAUTH_REQD：クライアントはCWAログインを完了する必要があります。WLCはCoAの受信を待機します。
• RUN：クライアントは必要な L2 および L3 ポリシーを正常に完了し、トラフィックをネットワークに送信できるようになりました。

以下のシナリオでは、ワイヤレスのセットアップで起こりがちな設定ミスに対するデバッグの重要な行を示しています。特に、重要なパラメータは太字で示しています。

シナリオ1：クライアントでのWPA/WPA2 PSK認証のパスフレーズの誤設定

(Cisco Controller) >show client detail 24:77:03:19:fb:70Client MAC Address............................... 24:77:03:19:fb:70Client Username ................................. N/AAP MAC Address................................... ec:c8:82:a4:5b:c0AP Name.......................................... Shankar_AP_1042 AP radio slot Id................................. 1 Client State..................................... Associated  Client NAC OOB State............................. AccessWireless LAN Id.................................. 5 Hotspot (802.11u)................................ Not SupportedBSSID............................................ ec:c8:82:a4:5b:cb Connected For ................................... 0 secsChannel.......................................... 44IP Address....................................... UnknownGateway Address.................................. UnknownNetmask.......................................... UnknownAssociation Id................................... 1 Authentication Algorithm......................... Open SystemReason Code...................................... 1 Status Code...................................... 0 Session Timeout.................................. 0 Client CCX version............................... 4 Client E2E version............................... 1 QoS Level........................................ SilverAvg data Rate.................................... 0Burst data Rate.................................. 0Avg Real time data Rate.......................... 0Burst Real Time data Rate........................ 0802.1P Priority Tag.............................. 2CTS Security Group Tag........................... Not ApplicableKTS CAC Capability............................... NoWMM Support...................................... Enabled APSD ACs....................................... BK BE VI VOPower Save....................................... OFFCurrent Rate..................................... m15Supported Rates.................................. 6.0,9.0,12.0,18.0,24.0,36.0, ............................................. 48.0,54.0Mobility State................................... NoneMobility Move Count.............................. 0Security Policy Completed........................ NoPolicy Manager State............................. 8021X_REQD 
***This proves client is struggling to clear Layer-2 authentication. 
It means we have to move to debug to understand where in L-2 we are failingPolicy Manager Rule Created...................... YesAudit Session ID................................. noneAAA Role Type.................................... noneLocal Policy Applied............................. noneIPv4 ACL Name.................................... noneFlexConnect ACL Applied Status................... UnavailableIPv4 ACL Applied Status.......................... UnavailableIPv6 ACL Name.................................... noneIPv6 ACL Applied Status.......................... UnavailableLayer2 ACL Name.................................. noneLayer2 ACL Applied Status........................ UnavailablemDNS Status...................................... EnabledmDNS Profile Name................................ default-mdns-profileNo. of mDNS Services Advertised.................. 0Policy Type...................................... WPA2Authentication Key Management.................... PSKEncryption Cipher................................ CCMP (AES)Protected Management Frame ...................... NoManagement Frame Protection...................... NoEAP Type......................................... UnknownInterface........................................ vlan21VLAN............................................. 21Quarantine VLAN.................................. 0Access VLAN...................................... 21Client Capabilities: CF Pollable................................ Not implemented CF Poll Request............................ Not implemented Short Preamble............................. Not implemented PBCC....................................... Not implemented Channel Agility............................ Not implemented Listen Interval............................ 10 Fast BSS Transition........................ Not implementedClient Wifi Direct Capabilities: WFD capable................................ No Manged WFD capable......................... No Cross Connection Capable................... No Support Concurrent Operation............... NoFast BSS Transition Details:Client Statistics: Number of Bytes Received................... 423 Number of Bytes Sent....................... 429 Number of Packets Received................. 3 Number of Packets Sent..................... 4 Number of Interim-Update Sent.............. 0 Number of EAP Id Request Msg Timeouts...... 0 Number of EAP Id Request Msg Failures...... 0 Number of EAP Request Msg Timeouts......... 0 Number of EAP Request Msg Failures......... 0 Number of EAP Key Msg Timeouts............. 0 Number of EAP Key Msg Failures............. 0 Number of Data Retries..................... 0 Number of RTS Retries...................... 0 Number of Duplicate Received Packets....... 0 Number of Decrypt Failed Packets........... 0 Number of Mic Failured Packets............. 0 Number of Mic Missing Packets.............. 0 Number of RA Packets Dropped............... 0 Number of Policy Errors.................... 0 Radio Signal Strength Indicator............ -18 dBm Signal to Noise Ratio...................... 40 dBClient Rate Limiting Statistics: Number of Data Packets Received............ 0 Number of Data Rx Packets Dropped.......... 0 Number of Data Bytes Received.............. 0 Number of Data Rx Bytes Dropped............ 0 Number of Realtime Packets Received........ 0 Number of Realtime Rx Packets Dropped...... 0 Number of Realtime Bytes Received.......... 0 Number of Realtime Rx Bytes Dropped........ 0 Number of Data Packets Sent................ 0 Number of Data Tx Packets Dropped.......... 0 Number of Data Bytes Sent.................. 0 Number of Data Tx Bytes Dropped............ 0 Number of Realtime Packets Sent............ 0 Number of Realtime Tx Packets Dropped...... 0 Number of Realtime Bytes Sent.............. 0 Number of Realtime Tx Bytes Dropped........ 0Nearby AP Statistics: Shankar_AP_1602(slot 0) antenna0: 0 secs ago..................... -25 dBm antenna1: 0 secs ago..................... -40 dBm Shankar_AP_1602(slot 1) antenna0: 1 secs ago..................... -41 dBm antenna1: 1 secs ago..................... -27 dBm Shankar_AP_3502(slot 0) antenna0: 0 secs ago..................... -90 dBm antenna1: 0 secs ago..................... -83 dBm Shankar_AP_1042(slot 0) antenna0: 0 secs ago..................... -32 dBm antenna1: 0 secs ago..................... -41 dBm Shankar_AP_1042(slot 1) antenna0: 0 secs ago..................... -50 dBm antenna1: 0 secs ago..................... -42 dBmDNS Server details: DNS server IP ............................. 0.0.0.0 DNS server IP ............................. 0.0.0.0Assisted Roaming Prediction List details: Client Dhcp Required: FalseAllowed (URL)IP Addresses------------------------- 

debug client の分析:

(Cisco Controller) >debug client 24:77:03:19:fb:70 *apfMsConnTask_4: May 07 17:03:56.060: 24:77:03:19:fb:70 Association received from mobile on BSSID 08:cc:68:67:1f:fb //Client has initiated association for AP with BSSID 08:cc:68:67:1f:fb*apfMsConnTask_4: May 07 17:03:56.060: 24:77:03:19:fb:70 Global 200 Clients are allowed to AP radio *apfMsConnTask_4: May 07 17:03:56.060: 24:77:03:19:fb:70 Max Client Trap Threshold: 0 cur: 0 *apfMsConnTask_4: May 07 17:03:56.060: 24:77:03:19:fb:70 Rf profile 600 Clients are allowed to AP wlan *apfMsConnTask_4: May 07 17:03:56.060: 24:77:03:19:fb:70 Applying Interface policy on Mobile, role Unassociated. Ms NAC State 2 Quarantine Vlan 0 Access Vlan 21 *apfMsConnTask_4: May 07 17:03:56.060: 24:77:03:19:fb:70 Re-applying interface policy for client *apfMsConnTask_4: May 07 17:03:56.060: 24:77:03:19:fb:70 0.0.0.0 START (0) Changing IPv4 ACL 'none' (ACL ID 255) ===> 'none' (ACL ID 255) --- (caller apf_policy.c:2202)*apfMsConnTask_4: May 07 17:03:56.060: 24:77:03:19:fb:70 0.0.0.0 START (0) Changing IPv6 ACL 'none' (ACL ID 255) ===> 'none' (ACL ID 255) --- (caller apf_policy.c:2223)*apfMsConnTask_4: May 07 17:03:56.060: 24:77:03:19:fb:70 apfApplyWlanPolicy: Apply WLAN Policy over PMIPv6 Client Mobility Type*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 In processSsidIE:4795 setting Central switched to TRUE*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 In processSsidIE:4798 apVapId = 5 and Split Acl Id = 65535*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 Applying site-specific Local Bridging override for station 24:77:03:19:fb:70 - vapId 5, site 'default-group', interface 'vlan21'*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 Applying Local Bridging Interface Policy for station 24:77:03:19:fb:70 - vlan 21, interface id 14, interface 'vlan21'*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 processSsidIE statusCode is 0 and status is 0*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 processSsidIE ssid_done_flag is 0 finish_flag is 0*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 STA - rates (8): 140 18 24 36 48 72 96 108 0 0 0 0 0 0 0 0*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 suppRates statusCode is 0 and gotSuppRatesElement is 1*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 Processing RSN IE type 48, length 22 for mobile 24:77:03:19:fb:70*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 pemApfDeleteMobileStation2: APF_MS_PEM_WAIT_L2_AUTH_COMPLETE = 0.*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 0.0.0.0 START (0) Deleted mobile LWAPP rule on AP [ec:c8:82:a4:5b:c0]*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 Updated location for station old AP ec:c8:82:a4:5b:c0-1, new AP 08:cc:68:67:1f:f0-1*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 Updating AID for REAP AP Client 08:cc:68:67:1f:f0 - AID ===> 1*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 0.0.0.0 START (0) Initializing policy*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 0.0.0.0 START (0) Change state to AUTHCHECK (2) last state START (0) *apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 0.0.0.0 AUTHCHECK (2) Change state to 8021X_REQD (3) last state AUTHCHECK (2)//
***Client entering L2 authentication stage *apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 Central switch is TRUE*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 Not Using WMM Compliance code qosCap 00*apfMsConnTask_4: May 07 17:03:56.061: 24:77:03:19:fb:70 0.0.0.0 8021X_REQD (3) Plumbed mobile LWAPP rule on AP 08:cc:68:67:1f:f0 vapId 5 apVapId 5 flex-acl-name:*apfMsConnTask_4: May 07 17:03:56.062: 24:77:03:19:fb:70 apfMsAssoStateInc*apfMsConnTask_4: May 07 17:03:56.062: 24:77:03:19:fb:70 apfPemAddUser2 (apf_policy.c:333) Changing state for mobile 24:77:03:19:fb:70 on AP 08:cc:68:67:1f:f0 from Disassociated to Associated *apfMsConnTask_4: May 07 17:03:56.062: 24:77:03:19:fb:70 apfPemAddUser2:session timeout forstation 24:77:03:19:fb:70 - Session Tout 0, apfMsTimeOut '0' and sessionTimerRunning flag is 0*apfMsConnTask_4: May 07 17:03:56.062: 24:77:03:19:fb:70 Stopping deletion of Mobile Station: (callerId: 48)*apfMsConnTask_4: May 07 17:03:56.062: 24:77:03:19:fb:70 Func: apfPemAddUser2, Ms Timeout = 0, Session Timeout = 0 *apfMsConnTask_4: May 07 17:03:56.062: 24:77:03:19:fb:70 Sending Assoc Response to station on BSSID 08:cc:68:67:1f:fb (status 0) ApVapId 5 Slot 1*apfMsConnTask_4: May 07 17:03:56.062: 24:77:03:19:fb:70 apfProcessAssocReq (apf_80211.c:8292) Changing state for mobile 24:77:03:19:fb:70 on AP 08:cc:68:67:1f:f0 from Associated to Associated *spamApTask3: May 07 17:03:56.065: 24:77:03:19:fb:70 Sent 1x initiate message to multi thread task for mobile 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.065: 24:77:03:19:fb:70 Creating a PKC PMKID Cache entry for station 24:77:03:19:fb:70 (RSN 2)*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 Resetting MSCB PMK Cache Entry 0 for station 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 Removing BSSID ec:c8:82:a4:5b:cb from PMKID cache of station 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 Setting active key cache index 0 ---> 8*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 Setting active key cache index 8 ---> 0*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 Adding BSSID 08:cc:68:67:1f:fb to PMKID cache at index 0 for station 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: New PMKID: (16) *Dot1x_NW_MsgTask_0: May 07 17:03:56.066: [0000] d7 57 8e ff 2b 27 01 4e 93 39 0b 1c 1f 46 d2 da *Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 Initiating RSN PSK to mobile 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 EAP-PARAM Debug - eap-params for Wlan-Id :5 is disabled - applying Global eap timers and retries*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 dot1x - moving mobile 24:77:03:19:fb:70 into Force Auth state*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 EAPOL Header:*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 00000000: 02 03 00 5f ..._*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 Found an cache entry for BSSID 08:cc:68:67:1f:fb in PMKID cache at index 0 of station 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 Found an cache entry for BSSID 08:cc:68:67:1f:fb in PMKID cache at index 0 of station 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: Including PMKID in M1 (16) *Dot1x_NW_MsgTask_0: May 07 17:03:56.066: [0000] d7 57 8e ff 2b 27 01 4e 93 39 0b 1c 1f 46 d2 da *Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 Starting key exchange to mobile 24:77:03:19:fb:70, data packets will be dropped*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 Sending EAPOL-Key Message to mobile 24:77:03:19:fb:70 state INITPMK (message 1), replay counter 00.00.00.00.00.00.00.00*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 Sending EAPOL-Key Message to mobile 24:77:03:19:fb:70 state INITPMK (message 1), replay counter 00.00.00.00.00.00.00.00*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 Allocating EAP Pkt for retransmission to mobile 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 mscb->apfMsLwappLradNhMac = b0:fa:eb:b8:f5:12 mscb->apfMsLradSlotId = 1 mscb->apfMsLradJumbo = 0 mscb->apfMsintIfNum = 1*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 mscb->apfMsBssid = 08:cc:68:67:1f:f0 mscb->apfMsAddress = 24:77:03:19:fb:70 mscb->apfMsApVapId = 5*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 dot1xcb->snapOrg = 00 00 00 dot1xcb->eapolWepBit = 0 mscb->apfMsLwappLradVlanId = 0 mscb->apfMsLwappMwarInet.ipv4.addr = 181004965*Dot1x_NW_MsgTask_0: May 07 17:03:56.066: 24:77:03:19:fb:70 mscb->apfMsLwappMwarPort = 5246 mscb->apfMsLwappLradInet.ipv4.addr = 181004985 mscb->apfMsLwappLradPort = 36690*Dot1x_NW_MsgTask_0: May 07 17:03:56.069: 24:77:03:19:fb:70 Received EAPOL-Key from mobile 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.069: 24:77:03:19:fb:70 Ignoring invalid EAPOL version (1) in EAPOL-key message from mobile 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.069: 24:77:03:19:fb:70 Received EAPOL-key in PTK_START state (message 2) from mobile 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.069: 24:77:03:19:fb:70 Received EAPOL-key M2 with invalid MIC from mobile 24:77:03:19:fb:70 version 2*osapiBsnTimer: May 07 17:03:56.364: 24:77:03:19:fb:70 802.1x 'timeoutEvt' Timer expired for station 24:77:03:19:fb:70 and for message = M2 
 ***!--- MIC error due to wrong preshared key *dot1xMsgTask: May 07 17:03:56.364: 24:77:03:19:fb:70 Retransmit 1 of EAPOL-Key M1 (length 121) for mobile 24:77:03:19:fb:70*dot1xMsgTask: May 07 17:03:56.364: 24:77:03:19:fb:70 mscb->apfMsLwappLradNhMac = b0:fa:eb:b8:f5:12 mscb->apfMsLradSlotId = 1 mscb->apfMsLradJumbo = 0 mscb->apfMsintIfNum = 1*dot1xMsgTask: May 07 17:03:56.364: 24:77:03:19:fb:70 mscb->apfMsBssid = 08:cc:68:67:1f:f0 mscb->apfMsAddress = 24:77:03:19:fb:70 mscb->apfMsApVapId = 5*dot1xMsgTask: May 07 17:03:56.365: 24:77:03:19:fb:70 dot1xcb->snapOrg = 00 00 00 dot1xcb->eapolWepBit = 0 mscb->apfMsLwappLradVlanId = 0 mscb->apfMsLwappMwarInet.ipv4.addr = 181004965*dot1xMsgTask: May 07 17:03:56.365: 24:77:03:19:fb:70 mscb->apfMsLwappMwarPort = 5246 mscb->apfMsLwappLradInet.ipv4.addr = 181004985 mscb->apfMsLwappLradPort = 36690*Dot1x_NW_MsgTask_0: May 07 17:03:56.366: 24:77:03:19:fb:70 Received EAPOL-Key from mobile 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.366: 24:77:03:19:fb:70 Ignoring invalid EAPOL version (1) in EAPOL-key message from mobile 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.366: 24:77:03:19:fb:70 Received EAPOL-key in PTK_START state (message 2) from mobile 24:77:03:19:fb:70*Dot1x_NW_MsgTask_0: May 07 17:03:56.366: 24:77:03:19:fb:70 Received EAPOL-key M2 with invalid MIC from mobile 24:77:03:19:fb:70 version 2*osapiBsnTimer: May 07 17:03:56.764: 24:77:03:19:fb:70 802.1x 'timeoutEvt' Timer expired for station 24:77:03:19:fb:70 and for message = M2 
 ***!--- MIC error due to wrong preshared key

結論

M2キーのtimeoutEvtはドライバまたはNICのエラーが原因である可能性がありますが、最も一般的な問題の1つは、PSKパスワードの誤ったクレデンシャル（大文字と小文字を区別しない、特殊文字を含む）を入力したユーザが接続できないことです。

シナリオ2：ワイヤレス電話ハンドセット(792x/9971)がワイヤレス「サービスエリアから離脱」との関連付けに失敗する

参考：7925G受話器がAPへのアソシエーションに失敗する – コールが失敗する：TSPEC QOSポリシーが一致しない

トポロジ

Cisco Unified Wireless IP Phone を使用した WLAN.

問題の詳細

AIR-CT5508-50-K9 //電話機とワイヤレスコントローラのファームウェアをアップグレードしても、電話機の登録が受け付けられません。

デバッグとログ:

apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx Association received from mobile on AP 3x:xx:cx:9x:x0:x0*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx 0.0.0.0 START (0) Changing IPv4 ACL 'none' (ACL ID xxx) ===> 'none' (ACL ID xxx) --- (caller apf_policy.c:1x09)*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx 0.0.0.0 START (0) Changing IPv6 ACL 'none' (ACL ID xxx5) ===> 'none' (ACL ID xxx) --- (caller apf_policy.c:18x6)*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx Applying site-specific Local Bridging override for station 1x:xx:1x:xx:xx:xx - vapId 1, site 'default-group', interface 'xwirex'*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx Applying Local Bridging Interface Policy for station 1x:xx:1x:xx:xx:xx - vlan 510, interface id 12, interface 'xwirex'*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx processSsidIE statusCode is 0 and status is 0*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx processSsidIE ssid_done_flag is 0 finish_flag is 0*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx STA - rates (4): 130 132 139 150 0 0 0 0 0 0 0 0 0 0 0 0*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx suppRates statusCode is 0 and gotSuppRatesElement is 1*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx STA - rates (12): 130 132 139 150 12 18 24 36 48 72 96 108 0 0 0 0*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx extSuppRates statusCode is 0 and gotExtSuppRatesElement is 1*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx Processing RSN IE type 48, length 22 for mobile 1x:xx:1x:xx:xx:xx*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx CCKM: Mobile is using CCKM*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx Received RSN IE with 0 PMKIDs from mobile 1x:xx:1x:xx:xx:xx*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx Setting active key cache index 8 ---> 8*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx unsetting PmkIdValidatedByAp*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx Sending Assoc Response to station on BSSID 3x:xx:cx:9x:x0:x0 (status 201) ApVapId 1 Slot 0*apfMsConnTask_1: xx xx xx:50:xx.xxx: 1x:xx:1x:xx:xx:xx Scheduling deletion of Mobile Station: (callerId: 22) in 3 seconds VoIP Call Failure: '1x:xx:1x:xx:xx:xx' client, detected by 'xx-xx-xx' AP on radio type '802.11b/g'. Reason: 'Call failed: TSPEC QOS Policy does not match'. 
***Means platinum QoS was not configured on WLAN1x:xx PMClient Excluded: MACAddress:1x:xx:1x:xx:xx:xx Base Radio MAC :3x:xx:cx:9x:x0:x0 Slot: 1 User Name: dwpv\mtl7925 Ip Address: xx.xx.x.xx Reason:802.11 Association failed repeatedly. ReasonCode: 2

結論

WLCのデバッグでは、APがアソシエーションステータスコード201を返すため、7925Gがアソシエーションに失敗したことが示されます。

これは、WLAN設定に起因するハンドセット拒否からのトラフィック仕様(TSPEC)要求によるものです。接続を試行するWLAN 7925Gは、必要に応じてPlatinum(UP 6,7)ではなく、Silver(UP 0,3)のQoSプロファイルで設定されます。これは、WLANによるハンドセットからの音声トラフィックとアクションフレームの交換に対してTSPECの不一致を引き起こし、最終的にはAPから拒否されます。

7925Gハンドセット専用のQoSプロファイルPlatinumを使用して新しいWLANを作成し、確立されたベストプラクティスに従って、および『7925G Deployment Guide』の定義に従って設定します。

Cisco Unified Wireless IP Phone 7925G/7925G-EX/7926G 導入ガイド

正しく設定すると、問題は解決します。

シナリオ3：クライアントはWPA用に設定されるが、APはWPA2専用に設定される

debug client <mac addr>:

Wed May 7 10:51:37 2014: xx.xx.xx.xx.xx.xx Scheduling deletion of Mobile Station: (callerId: 23) in 5 secondsWed May 7 10:51:37 2014: xx.xx.xx.xx.xx.xx apfProcessProbeReq (apf_80211.c:4057) Changing state for mobile xx.xx.xx.xx.xx.xx on AP from Idle to Probe ***Controller adds the new client, moving into probing status Wed May 7 10:51:37 2014: xx.xx.xx.xx.xx.xx Scheduling deletion of Mobile Station: (callerId: 24) in 5 secondsWed May 7 10:51:38 2014: xx.xx.xx.xx.xx.xx Scheduling deletion of Mobile Station: (callerId: 24) in 5 secondsWed May 7 10:51:38 2014: xx.xx.xx.xx.xx.xx Scheduling deletion of Mobile Station: (callerId: 24) in 5 seconds ***AP is reporting probe activity every 500 ms as configured Wed May 7 10:51:41 2014: xx.xx.xx.xx.xx.xx Scheduling deletion of Mobile Station: (callerId: 24) in 5 secondsWed May 7 10:51:41 2014: xx.xx.xx.xx.xx.xx Scheduling deletion of Mobile Station: (callerId: 24) in 5 secondsWed May 7 10:51:41 2014: xx.xx.xx.xx.xx.xx Scheduling deletion of Mobile Station: (callerId: 24) in 5 secondsWed May 7 10:51:41 2014: xx.xx.xx.xx.xx.xx Scheduling deletion of Mobile Station: (callerId: 24) in 5 secondsWed May 7 10:51:44 2014: xx.xx.xx.xx.xx.xx Scheduling deletion of Mobile Station: (callerId: 24) in 5 secondsWed May 7 10:51:44 2014: xx.xx.xx.xx.xx.xx Scheduling deletion of Mobile Station: (callerId: 24) in 5 secondsWed May 7 10:51:44 2014: xx.xx.xx.xx.xx.xx Scheduling deletion of Mobile Station: (callerId: 24) in 5 secondsWed May 7 10:51:44 2014: xx.xx.xx.xx.xx.xx Scheduling deletion of Mobile Station: (callerId: 24) in 5 secondsWed May 7 10:51:49 2014: xx.xx.xx.xx.xx.xx apfMsExpireCallback (apf_ms.c:433) Expiring Mobile!Wed May 7 10:51:49 2014: xx.xx.xx.xx.xx.xx 0.0.0.0 START (0) Deleted mobile LWAPP rule on AP []Wed May 7 10:51:49 2014: xx.xx.xx.xx.xx.xx Deleting mobile on AP (0) ***After 5 seconds of inactivity, client is deleted, never moved into authentication or association phases.

シナリオ4:AAAのリターンコードまたは応答コードの解析

必要なログを収集するために実行する必要があるデバッグ：
（シスコ コントローラ） >debug mac addr <mac>
（シスコ コントローラ） >debug aaa events enable
（または）
（シスコ コントローラ） >debug client <mac>
（シスコ コントローラ） >debug aaa events enable
（シスコ コントローラ） >debug aaa errors enable

トラップが有効な場合、AAA接続障害によりSNMPトラップが生成されます。

デバッグ出力例（抜粋）:

*radiusTransportThread: Mar 26 17:54:58.054: 70:f1:a1:69:7b:e7 Invalid RADIUS message authenticator for mobile 70:f1:a1:69:7b:e7*radiusTransportThread: Mar 26 17:54:58.054: 70:f1:a1:69:7b:e7 RADIUS message verification failed from server 10.50.0.74 with id=213. Possible secret mismatch for mobile 70:f1:a1:69:7b:e7*radiusTransportThread: Mar 26 17:54:58.054: 70:f1:a1:69:7b:e7 Returning AAA Error 'Authentication Failed' (-4) for mobile 70:f1:a1:69:7b:e7*radiusTransportThread: Mar 26 17:54:58.054: AuthorizationResponse: 0x4259f944 Returning AAA Error 'Success' (0) for mobileSuccessful Authentication happened, AAA returns access-accept prior to Success (0) to confirm the same. Returning AAA Error 'Out of Memory' (-2) for mobile***it's the rare reason. Cisco bug ID CSCud12582***Processing AAA Error 'Out of Memory' Returning AAA Error 'Authentication Failed' (-4) for mobile***its the most common reason seen

考えられる理由：

Wed Oct 26 20:08:50 2011: 00:13:ce:1a:92:41 Max retransmission of Access-Request (id 100) to 209.165.200.254 reached for mobile 00:13:ce:1a:92:41Wed Oct 26 20:08:50 2011: 00:13:ce:1a:92:41 [Error] Client requested no retries for mobile 00:13:CE:1A:92:41 Wed Oct 26 20:08:50 2011: 00:13:ce:1a:92:41 Returning AAA Error 'Timeout' (-5) for mobile 00:13:ce:1a:92:41 
Wed Oct 26 20:08:50 2011: 00:13:ce:1a:92:41 Processing AAA Error 'Timeout' (-5) for mobile 00:13:ce:1a:92:41 
Wed Oct 26 20:08:50 2011: 00:13:ce:1a:92:41 Sent Deauthenticate to mobile on BSSID 00:0b:85:76:d3:e0 slot 1(caller 1x_auth_pae.c:1033)Wed Oct 26 20:08:50 2011: 00:13:ce:1a:92:41 Scheduling deletion of Mobile Station: (callerId: 65) in 10 seconds

*radiusTransportThread: Feb 21 12:14:36.109: Aborting ATTR processing 599 (avp 26/6)*radiusTransportThread: Feb 21 12:14:36.109: 40:f0:2f:11:a9:fd Invalid RADIUS response received from server 192.0.2.254 with id=9 for mobile 40:f0:2f:11:a9:fd*radiusTransportThread: Feb 21 12:14:36.109: 40:f0:2f:11:a9:fd [Error] Client requested no retries for mobile 40:F0:2F:11:A9:FD *radiusTransportThread: Feb 21 12:14:36.109: 40:f0:2f:11:a9:fd Returning AAA Error 'Internal Error' (-6) for mobile 40:f0:2f:11:a9:fd*radiusTransportThread: Feb 21 12:14:36.109:resultCode...................................-6*Dot1x_NW_MsgTask_5: Feb 21 12:14:36.109: 40:f0:2f:11:a9:fd Processing AAA Error 'Internal Error' (-6) for mobile 40:f0:2f:11:a9:fd

*Jun 22 20:32:10.229: 00:21:e9:57:3c:bf Returning AAA Error 'No Server' (-7) for mobile 00:21:e9:57:3c:bf*Jun 22 20:32:10.229: AuthorizationResponse: 0x1eebb3ec

apfMsExpireCallback (apf_ms.c:608) Expiring Mobile! apfMsExpireMobileStation (apf_ms.c:5009) Changing state for mobile 00:1e:8c:0f:a4:57 on AP 00:26:cb:94:44:c0 from Associated to Disassociated Scheduling deletion of Mobile Station: (callerId: 45) in 10 seconds apfMsExpireCallback (apf_ms.c:608) Expiring Mobile! Sent Deauthenticate to mobile on BSSID 00:26:cb:94:44:c0 slot 0(caller apf_ms.c:5094)

apfSendDisAssocMsgDebug (apf_80211.c:1855) Changing state for mobile 00:1e:8c:0f:a4:57 on AP 00:26:cb:94:44:c0 from Associated to Disassociated Sent Disassociate to mobile on AP 00:26:cb:94:44:c0-0 (reason 1, caller apf_ms.c:4983) Sent Deauthenticate to mobile on BSSID 00:26:cb:94:44:c0 slot 0(caller apf_ms.c:5094)

apfMsDeleteByMscb Scheduling mobile for deletion with deleteReason 6, reasonCode 1 Scheduling deletion of Mobile Station: (callerId: 30) in 1 seconds apfMsExpireCallback (apf_ms.c:608) Expiring Mobile! apfMsExpireMobileStation (apf_ms.c:5009) Changing state for mobile 00:1e:8c:0f:a4:57 on AP 00:26:cb:94:44:c0 from Associated to Disassociated Sent Deauthenticate to mobile on BSSID 00:26:cb:94:44:c0 slot 0(caller apf_ms.c:5094)

Retransmit failure for EAPOL-Key M3 to mobile 00:1e:8c:0f:a4:57, retransmit count 3, mscb deauth count 0 Sent Deauthenticate to mobile on BSSID 00:26:cb:94:44:c0 slot 0(caller 1x_ptsm.c:534)

Cleaning up state for STA 00:1e:8c:0f:a4:57 due to event for AP 00:26:cb:94:44:c0(0) apfSendDisAssocMsgDebug (apf_80211.c:1855) Changing state for mobile 00:1e:8c:0f:a4:57 on AP 00:26:cb:94:44:c0 from Associated to Disassociated Sent Disassociate to mobile on AP 00:26:cb:94:44:c0-0 (reason 1, caller apf_ms.c:4983)

*dot1xMsgTask: Apr 12 11:45:39.335: 84:3a:4b:7a:d5:ac Retransmit 1 of EAPOL-Key M3 (length 155) for mobile 84:3a:4b:7a:d5:ac *osapiBsnTimer: Apr 12 11:45:44.336: 84:3a:4b:7a:d5:ac 802.1x 'timeoutEvt' Timer expired for station 84:3a:4b:7a:d5:ac and for message = M3 
*dot1xMsgTask: Apr 12 11:45:44.336: 84:3a:4b:7a:d5:ac Retransmit 2 of EAPOL-Key M3 (length 155) for mobile 84:3a:4b:7a:d5:ac *osapiBsnTimer: Apr 12 11:45:49.336: 84:3a:4b:7a:d5:ac 802.1x 'timeoutEvt' Timer expired for station 84:3a:4b:7a:d5:ac and for message = M3 
*dot1xMsgTask: Apr 12 11:45:49.336: 84:3a:4b:7a:d5:ac Retransmit 3 of EAPOL-Key M3 (length 155) for mobile 84:3a:4b:7a:d5:ac *osapiBsnTimer: Apr 12 11:45:54.336: 84:3a:4b:7a:d5:ac 802.1x 'timeoutEvt' Timer expired for station 84:3a:4b:7a:d5:ac and for message = M3 *dot1xMsgTask: Apr 12 11:45:54.337: 84:3a:4b:7a:d5:ac Retransmit 4 of EAPOL-Key M3 (length 155) for mobile 84:3a:4b:7a:d5:ac *osapiBsnTimer: Apr 12 11:45:59.336: 84:3a:4b:7a:d5:ac 802.1x 'timeoutEvt' Timer expired for station 84:3a:4b:7a:d5:ac and for message = M3 *dot1xMsgTask: Apr 12 11:45:59.336: 84:3a:4b:7a:d5:ac Retransmit failure for EAPOL-Key M3 to mobile 84:3a:4b:7a:d5:ac, retransmit count 5, mscb deauth count 0 *dot1xMsgTask: Apr 12 11:45:59.338: 84:3a:4b:7a:d5:ac Sent Deauthenticate to mobile on BSSID c8:f9:f9:89:15:60 slot 1(caller

*Bonjour_Msg_Task: Apr 15 15:29:35.640: b0:65:bd:df:f8:71 Query Service Name: _universal._sub._ipp._tcp.local., Type: C, Class: 1. *Bonjour_Msg_Task: Apr 15 15:29:35.640: qNameStr:_universal._sub._ipp._tcp.local., bonjServiceNameStr:_universal._sub._ipp._tcp.local., bonjSpNameStr:_dns-sd._udp.YVG.local. *Bonjour_Msg_Task: Apr 15 15:29:35.640: Service Name : HP_Photosmart_Printer_1 Service String : _universal._sub._ipp._tcp.local. is supported in MSAL-DB *Bonjour_Msg_Task: Apr 15 15:29:35.640: b0:65:bd:df:f8:71 Service:_universal._sub._ipp._tcp.local. is supported by client's profile:default-mdns-profile *Bonjour_Msg_Task: Apr 15 15:29:35.640: processBonjourPacket : 986 AP-MAC = C8:4C:75:D1:77:20 has ap-group = GBH *Bonjour_Msg_Task: Apr 15 15:29:35.640: Sending Bonjour Response *Bonjour_Msg_Task: Apr 15 15:29:35.640: Service Provider Name: _dns-sd._udp.YVG.local., Msal Service Name: HP_Photosmart_Printer_1 
*Bonjour_Msg_Task: Apr 15 15:29:35.640: Sending Query Response bonjSpNameStr: _dns-sd._udp.YVG.local., bonjMsalServiceName: HP_Photosmart_Printer_1, bonjourMsgId:0, dstMac: B0:65:BD:DF:F8:71 dstIP: 172.29.0.100 *Bonjour_Msg_Task: Apr 15 15:29:35.640: vlanId : 909, allvlan : 0, isMcast : 1, toSta : 1 *Bonjour_Msg_Task: Apr 15 15:29:35.640: b0:65:bd:df:f8:71 Successfully sent response for service: _universal._sub._ipp._tcp.local.. *Bonjour_Process_Task: Apr 15 15:29:35.641: Inside buildBonjourQueryResponsePld, available_len =1366 *Bonjour_Process_Task: Apr 15 15:29:35.641: Not able to attach any record *Bonjour_Process_Task: Apr 15 15:29:35.641: Error building the Bonjour Packet !!

回避策

唯一の回避策は、DHCPオプション15（ドメイン名）を無効にするか、クライアントからドメイン名を削除することです。

シナリオ14：無効になっているFast SSID Changeが原因でApple iOSクライアントがネットワークに参加できない

条件

ほとんどのApple iOSデバイスでは、デフォルトの fast SSID change disabledを使用して同じCisco WLC上のあるWLANから別のWLANに移動すると問題が発生します。

この設定により、クライアントが別のクライアントへの関連付けを試行すると、コントローラは既存のWLANからクライアントの認証を解除します。

一般的な結果は、iOSデバイスでの「nable to Join the Network" Umessage」です。

クライアントの表示

(jk-2504-116) >show network summary

<中略>

高速SSID変更...........................Disabled

使用するデバッグ：

(jk-2504-116) >debug client 1c:e6:2b:cd:da:9d (jk-2504-116) >*apfMsConnTask_7: Jan 30 21:33:14.544: 1c:e6:2b:cd:da:9d Association received from mobile on BSSID 00:21:a0:e3:fd:be 
***Apple Client initiating switch from one wlan to another. *apfMsConnTask_7: Jan 30 21:33:14.544: 1c:e6:2b:cd:da:9d Global 200 Clients are allowed to AP radio *apfMsConnTask_7: Jan 30 21:33:14.544: 1c:e6:2b:cd:da:9d Max Client Trap Threshold: 0 cur: 1 *apfMsConnTask_7: Jan 30 21:33:14.544: 1c:e6:2b:cd:da:9d Rf profile 600 Clients are allowed to AP wlan *apfMsConnTask_7: Jan 30 21:33:14.544: 1c:e6:2b:cd:da:9d Deleting client immediately since WLAN has changed //WLC removing apple client from original WLAN  *apfMsConnTask_7: Jan 30 21:33:14.544: 1c:e6:2b:cd:da:9d Scheduling deletion of Mobile Station: (callerId: 50) in 1 seconds *osapiBsnTimer: Jan 30 21:33:15.375: 1c:e6:2b:cd:da:9d apfMsExpireCallback (apf_ms.c:625) Expiring Mobile! *apfReceiveTask: Jan 30 21:33:15.375: 1c:e6:2b:cd:da:9d apfMsExpireMobileStation (apf_ms.c:6632) Changing state for mobile 1c:e6:2b:cd:da:9d on AP 00:21:a0:e3:fd:b0 from Associated to Disassociated *apfReceiveTask: Jan 30 21:33:15.375: 1c:e6:2b:cd:da:9d Sent Deauthenticate to mobile on BSSID 00:21:a0:e3:fd:b0 slot 1(caller apf_ms.c:6726)  *apfReceiveTask: Jan 30 21:33:15.375: 1c:e6:2b:cd:da:9d Found an cache entry for BSSID 00:21:a0:e3:fd:bf in PMKID cache at index 0 of station 1c:e6:2b:cd:da:9d *apfReceiveTask: Jan 30 21:33:15.375: 1c:e6:2b:cd:da:9d Removing BSSID 00:21:a0:e3:fd:bf from PMKID cache of station 1c:e6:2b:cd:da:9d *apfReceiveTask: Jan 30 21:33:15.375: 1c:e6:2b:cd:da:9d Resetting MSCB PMK Cache Entry 0 for station 1c:e6:2b:cd:da:9d *apfReceiveTask: Jan 30 21:33:15.375: 1c:e6:2b:cd:da:9d Setting active key cache index 0 ---> 8 *apfReceiveTask: Jan 30 21:33:15.375: 1c:e6:2b:cd:da:9d Deleting the PMK cache when de-authenticating the client. *apfReceiveTask: Jan 30 21:33:15.375: 1c:e6:2b:cd:da:9d Global PMK Cache deletion failed. *apfReceiveTask: Jan 30 21:33:15.376: 1c:e6:2b:cd:da:9d apfMsAssoStateDec *apfReceiveTask: Jan 30 21:33:15.376: 1c:e6:2b:cd:da:9d apfMsExpireMobileStation (apf_ms.c:6764) Changing state for mobile 1c:e6:2b:cd:da:9d on AP 00:21:a0:e3:fd:b0 from Disassociated to Idle *apfReceiveTask: Jan 30 21:33:15.376: 1c:e6:2b:cd:da:9d pemApfDeleteMobileStation2: APF_MS_PEM_WAIT_L2_AUTH_COMPLETE = 0. *apfReceiveTask: Jan 30 21:33:15.376: 1c:e6:2b:cd:da:9d 192.0.2.254 START (0) Deleted mobile LWAPP rule on AP [00:21:a0:e3:fd:b0] *apfReceiveTask: Jan 30 21:33:15.376: 1c:e6:2b:cd:da:9d Deleting mobile on AP 00:21:a0:e3:fd:b0(1) *pemReceiveTask: Jan 30 21:33:15.377: 1c:e6:2b:cd:da:9d 192.0.2.254 Removed NPU entry. *apfMsConnTask_7: Jan 30 21:33:23.890: 1c:e6:2b:cd:da:9d Adding mobile on LWAPP AP 00:21:a0:e3:fd:b0(1) 
***No client activity for > 7 sec due to fast-ssid change disabled *apfMsConnTask_7: Jan 30 21:33:23.890: 1c:e6:2b:cd:da:9d Association received from mobile on BSSID 00:21:a0:e3:fd:bf *apfMsConnTask_7: Jan 30 21:33:23.890: 1c:e6:2b:cd:da:9d Global 200 Clients are allowed to AP radio <Snip>  *apfMsConnTask_7: Jan 30 21:33:23.891: 1c:e6:2b:cd:da:9d Sending Assoc Response to station on BSSID 00:21:a0:e3:fd:bf (status 0) ApVapId 1 Slot 1 *apfMsConnTask_7: Jan 30 21:33:23.892: 1c:e6:2b:cd:da:9d apfProcessAssocReq (apf_80211.c:8292) Changing state for mobile 1c:e6:2b:cd:da:9d on AP 00:21:a0:e3:fd:b0 from Associated to Associated

回避策

WLCからのfast-ssid changeの有効化 GUI > Controller>General.

シナリオ15：クライアントのLDAPアソシエーションの成功

セキュアLDAPは、コントローラとTLSを使用するLDAPサーバ間の接続を保護するのに役立ちます。この機能は、コントローラソフトウェアバージョン7.6以降でサポートされています。

コントローラから LDAP サーバには、次の 2 種類のクエリを送信できます。


1. 匿名

このタイプでは、クライアントを認証する必要があるときに、コントローラからLDAPサーバに認証要求が送信されます。LDAPサーバはクエリの結果を返します。この交換の時点で、クライアントのユーザ名とパスワードを含むすべての情報はクリアテキストで送信されます。LDAPサーバは、バインドユーザ名/パスワードが追加されている限り、誰からのクエリにも応答します。

2. 認証

このタイプでは、コントローラは、LDAPサーバで自身を認証するために使用するユーザ名とパスワードで設定されます。パスワードはMD5 SASLで暗号化され、認証プロセス時にLDAPサーバに送信されます。これにより、LDAP サーバは認証要求の送信元を正しく識別できます。ただし、コントローラのIDは保護されますが、クライアントの詳細はクリアテキストで送信されます。

LDAP over TLSの本当のニーズは、クライアント認証データとその他のトランザクションが暗号化されずに実行される、これら2つのタイプによってもたらされるセキュリティの脆弱性によるものです。

要件

WLCはソフトウェアバージョン7.6以降を実行します。

MicrosoftサーバはLDAPを使用します。

使用するデバッグ：

debug aaa ldap enable

*LDAP DB Task 1: Feb 06 12:28:12.912: ldapAuthRequest [1] called lcapi_query base="CN=Users,DC=gceaaa,DC=com" type="person" attr="sAMAccountName" user="Ishaan" (rc = 0 - Success) *LDAP DB Task 1: Feb 06 12:28:12.912: Attempting user bind with username CN=Ishaan,CN=Users,DC=gceaaa,DC=com *LDAP DB Task 1: Feb 06 12:28:12.914: LDAP ATTR> dn = CN=Ishaan,CN=Users,DC=gceaaa,DC=com (size 35) *LDAP DB Task 1: Feb 06 12:28:12.914: Handling LDAP response Success //indicates passed LDAP auth.

シナリオ16:LDAPでのクライアント認証の失敗

使用するデバッグ：

debug aaa ldap enable

*LDAP DB Task 1: Feb 07 17:19:46.535: LDAP_CLIENT: Received no referrals in search result msg *LDAP DB Task 1: Feb 07 17:19:46.535: LDAP_CLIENT: Received 1 attributes in search result msg *LDAP DB Task 1: Feb 07 17:19:46.535: ldapAuthRequest [1] called lcapi_query base="CN=Users,DC=gceaaa,DC=com" type="person" attr="sAMAccountName" user="ish" (rc = 0 - Success) *LDAP DB Task 1: Feb 07 17:19:46.535: Handling LDAP response Authentication Failed //Failed auth *LDAP DB Task 1: Feb 07 17:19:46.536: Authenticated bind : Closing the binded session

回避策

LDAP サーバをチェックし、拒否理由を確認します。

シナリオ17:WLCでのLDAPの誤設定によるクライアント関連付けの問題

使用するデバッグ：

debug aaa ldap enable

*LDAP DB Task 1: Feb 07 17:21:26.710: ldapInitAndBind [1] called lcapi_init (rc = 0 - Success) *LDAP DB Task 1: Feb 07 17:21:26.712: ldapInitAndBind [1] configured Method Authenticated lcapi_bind (rc = 49 - Invalid credentials) *LDAP DB Task 1: Feb 07 17:21:26.787: ldapClose [1] called lcapi_close (rc = 0 - Success) *LDAP DB Task 1: Feb 07 17:21:26.787: LDAP server 1 changed state to IDLE *LDAP DB Task 1: Feb 07 17:21:26.787: LDAP server 1 changed state to ERROR *LDAP DB Task 1: Feb 07 17:21:26.787: Handling LDAP response Internal Error

回避策

クライアント/WLC および LDAP サーバ間でやり取りされるクレデンシャルを検証します。

シナリオ18:LDAPサーバに到達できない場合のクライアントアソシエーションの問題

使用するデバッグ：

debug aaa ldap enable

*LDAP DB Task 2: Feb 07 17:26:45.874: ldapInitAndBind [2] configured Method Anonymous lcapi_bind (rc = 1005 - LDAP bind failed) *LDAP DB Task 2: Feb 07 17:26:45.874: ldapClose [2] called lcapi_close (rc = 0 - Success) *LDAP DB Task 2: Feb 07 17:26:45.875: LDAP server 2 changed state to IDLE *LDAP DB Task 2: Feb 07 17:26:45.875: LDAP server 2 changed state to ERROR *LDAP DB Task 2: Feb 07 17:26:45.875: Handling LDAP response Internal Error

回避策

WLC および LDAP サーバのネットワーク接続問題を確認します。

シナリオ19：固定(Sticky)ローミングが設定されていないAppleクライアントのローミング問題

条件

AIR-CT5508-K9 / 7.4.100.0

Appleのデバイスは、次のものを使用するワイヤレスネットワークから切断されます。

- WPA2ポリシー
- WPA2暗号化AES
– 認証802.1Xが有効

Cisco ISEによる認証および認可


Appleデバイスは、ブロードキャストSSIDから定期的に切断されます。たとえば、同じ場所にある別の電話機が接続されている間に切断されるiPhoneなどです。したがって、これはランダムに発生します（時間と電話）。

問題のないラップトップクライアント同じSSIDに接続する

この問題は、ローミングもスタンバイモードもない通常の動作中に発生します。

WLANでは、問題を引き起こす可能性のあるすべての設定がすでに削除されています(aironet ext)。

使用するデバッグ：

debug client <mac addr>

*apfMsConnTask_5: Jun 11 16:12:56.342: f0:d1:a9:bb:2d:fa Received RSN IE with 0 PMKIDs from mobile f0:d1:a9:bb:2d:fa ***At 16:12:56 in the debugs we see a client re-association. From there the AP is expecting the client to present its old PMKID (Pairwise Master Key Identifiers). 
***At this point it does not! From the above message the AP/WLC didn’t receive a PMKID from the iPhone.
***This is kind of expected from this type of client. 
***Apple devices do not use the opportunistic key caching which allows clients to use the SAME PMKID at all Aps.
***Apple devices use a key cache method of Sticky Key Caching. 
***This in turn means that the client has to build a PMKID at EACH AP in order to successfully roam to the AP. 
***As we can see the client did not present a PMKID to use so we sent it through layer 2 security/EAP again. 
***The client then hits a snag in the EAP process where the client fails to respond to the EAP ID or request for credentials until the second attempt *dot1xMsgTask: Jun 11 16:12:56.345: f0:d1:a9:bb:2d:fa Sending EAP-Request/Identity to mobile f0:d1:a9:bb:2d:fa (EAP Id 1) *osapiBsnTimer: Jun 11 16:13:26.288: f0:d1:a9:bb:2d:fa 802.1x 'txWhen' Timer expired for station f0:d1:a9:bb:2d:fa and for message = M0 ***After this snag the client is allowed back onto the network all in approx. 1.5 seconds. 
***This is going to be normal and EXPECTED behavior currently with Sticky key cache clients.

回避策

Sticky Key Caching(SKC)クライアントを使用し、WLCコード7.2以降を使用しているお客様に対して、SKCのローミングサポートを有効にできるようになりました。デフォルトでは、WLCはOpportunistic Key Caching(OKC)のみをサポートします。クライアントが各APで生成した古いPMKIDを使用できるようにするには、WLC CLIでそれを有効にする必要があります。

config wlan security wpa wpa2 cache sticky enable <1>

これはSKCの性質上、初期ローミングを改善するものではないことに注意してください。ただし、同じAPへの後続のローミングは改善されます（書籍では8まで）。8つのAPがある廊下を歩いていると想像してください。最初のウォークスルーは、各APで約1 ～ 2秒間の遅延を伴う完全な関連付けから構成されます。最後に到達して戻ると、クライアントは同じアソシエーションに戻るときに8つの一意のPMKIDを提示します。

SKCサポートが有効になっている場合、APは完全な認証を通過する必要はありません。これにより遅延が解消され、クライアントは接続されたままになります。

シナリオ20:CCKMでの高速セキュアローミング(FSR)の確認

CUWN での 802.11 WLAN ローミングと高速セキュア ローミング

使用するデバッグ：

debug client <mac addr>

*apfMsConnTask_2: Jun 25 15:43:33.749: 00:40:96:b7:ab:5c CCKM: Received REASSOC REQ IE 
*apfMsConnTask_2: Jun 25 15:43:33.749: 00:40:96:b7:ab:5c Reassociation received from mobile on BSSID 84:78:ac:f0:2a:93 *apfMsConnTask_2: Jun 25 15:43:33.750: 00:40:96:b7:ab:5c Processing WPA IE type 221, length 22 for mobile 00:40:96:b7:ab:5c *apfMsConnTask_2: Jun 25 15:43:33.750: 00:40:96:b7:ab:5c CCKM: Mobile is using CCKM ***The Reassociation Request is received from the client, which provides the CCKM information needed in order to derive the new keys with a fast-secure roam. *apfMsConnTask_2: Jun 25 15:43:33.750: 00:40:96:b7:ab:5c Setting active key cache index 0 ---> 8 *apfMsConnTask_2: Jun 25 15:43:33.750: 00:40:96:b7:ab:5c CCKM: Processing REASSOC REQ IE *apfMsConnTask_2: Jun 25 15:43:33.750: 00:40:96:b7:ab:5c  CCKM: using HMAC MD5 to compute MIC  ***WLC computes the MIC used for this CCKM fast-roaming exchange. *apfMsConnTask_2: Jun 25 15:43:33.750: 00:40:96:b7:ab:5c CCKM: Received a valid REASSOC REQ IE *apfMsConnTask_2: Jun 25 15:43:33.751: 00:40:96:b7:ab:5c CCKM: Initializing PMK cache entry with a new PTK ***The new PTK is derived. *apfMsConnTask_2: Jun 25 15:43:33.751: 00:40:96:b7:ab:5c Setting active key cache index 8 ---> 8 *apfMsConnTask_2: Jun 25 15:43:33.751: 00:40:96:b7:ab:5c Setting active key cache index 8 ---> 8 *apfMsConnTask_2: Jun 25 15:43:33.751: 00:40:96:b7:ab:5c Setting active key cache index 8 ---> 0 *apfMsConnTask_2: Jun 25 15:43:33.751: 00:40:96:b7:ab:5c Creating a PKC PMKID Cache entry for station 00:40:96:b7:ab:5c (RSN 0) on BSSID 84:78:ac:f0:2a:93 ***The new PMKID cache entry is created for this new AP-to-client association. *apfMsConnTask_2: Jun 25 15:43:33.751: 00:40:96:b7:ab:5c CCKM: using HMAC MD5 to compute MIC *apfMsConnTask_2: Jun 25 15:43:33.751: 00:40:96:b7:ab:5c Including CCKM Response IE (length 62) in Assoc Resp to mobile *apfMsConnTask_2: Jun 25 15:43:33.751: 00:40:96:b7:ab:5c Sending Assoc Response to station on BSSID 84:78:ac:f0:2a:93 (status 0) ApVapId 4 Slot 0 ***The Reassociation Response is sent from the WLC/AP to the client, which includes the CCKM information required in order to confirm the new fast-roam and key derivation. *dot1xMsgTask: Jun 25 15:43:33.757: 00:40:96:b7:ab:5c Skipping EAP-Success to mobile 00:40:96:b7:ab:5c ***EAP is skipped due to the fast roaming, and CCKM does not require further key handshakes. The client is now ready to pass encrypted data frames on the new AP.

上に示すように、新しい暗号キーが引き続き導出されていますが、CCKMネゴシエーションスキームに基づいているため、EAP認証フレームやさらに多くの4方向ハンドシェイクを回避するために、高速セキュアローミングが実行されます。これは、ローミングの再関連付けフレームと、クライアントおよびWLCによって以前にキャッシュされた情報を使用して完了します。

シナリオ21:WPA2 PMKIDキャッシュを使用した高速セキュアローミング(FSR)の確認

使用するデバッグ：

debug client <mac addr>

*apfMsConnTask_0: Jun 22 00:26:40.787: ec:85:2f:15:39:32 Reassociation received from mobile on BSSID 84:78:ac:f0:68:d2 ***This is the Reassociation Request from the client. *apfMsConnTask_0: Jun 22 00:26:40.787: ec:85:2f:15:39:32 Processing RSN IE type 48, length 38 for mobile ec:85:2f:15:39:32 ***The WLC/AP finds an Information Element that claims PMKID Caching support on the Association request that is sent from the client. *apfMsConnTask_0: Jun 22 00:26:40.787: ec:85:2f:15:39:32 Received RSN IE with 1 PMKIDs from mobile ec:85:2f:15:39:32 ***The Reassociation Request from the client comes with one PMKID. *apfMsConnTask_0: Jun 22 00:26:40.787: Received PMKID: (16) *apfMsConnTask_0: Jun 22 00:26:40.788: [0000] c9 4d 0d 97 03 aa a9 0f 1b c8 33 73 01 f1 18 f5 ***This is the PMKID that is received. *apfMsConnTask_0: Jun 22 00:26:40.788: ec:85:2f:15:39:32 Searching for PMKID in MSCB PMKID cache for mobile ec:85:2f:15:39:32 ***WLC searches for a matching PMKID on the database. *apfMsConnTask_0: Jun 22 00:26:40.788: ec:85:2f:15:39:32 Found an cache entry for BSSID 84:78:ac:f0:68:d2 in PMKID cache at index 0 of station ec:85:2f:15:39:32 *apfMsConnTask_0: Jun 22 00:26:40.788: ec:85:2f:15:39:32 Found a valid PMKID in the MSCB PMKID cache for mobile ec:85:2f:15:39:32 ***The WLC validates the PMKID provided by the client, and confirms that it has a valid PMK cache for this client-and-AP pair. *apfMsConnTask_0: Jun 22 00:26:40.788: ec:85:2f:15:39:32 Setting active key cache index 1 ---> 0 *apfMsConnTask_0: Jun 22 00:26:40.788: ec:85:2f:15:39:32 Sending Assoc Response to station on BSSID 84:78:ac:f0:68:d2(status 0) ApVapId 3 Slot 0 ***The Reassociation Response is sent to the client, which validates the fast-roam with SKC. *dot1xMsgTask: Jun 22 00:26:40.795: ec:85:2f:15:39:32 Initiating RSN with existing PMK to mobile ec:85:2f:15:39:32 ***WLC initiates a Robust Secure Network association with this client-and-AP pair based on the cached PMK found. Hence, EAP is avoided as per the next message. *dot1xMsgTask: Jun 22 00:26:40.795: ec:85:2f:15:39:32 Skipping EAP-Success to mobile ec:85:2f:15:39:32 *dot1xMsgTask: Jun 22 00:26:40.795: ec:85:2f:15:39:32 Found an cache entry for BSSID 84:78:ac:f0:68:d2 in PMKID cache at index 0 of station ec:85:2f:15:39:32 *dot1xMsgTask: Jun 22 00:26:40.795: Including PMKID in M1(16) ***The hashed PMKID is included on the Message-1 of the WPA/WPA2 4-Way handshake. *dot1xMsgTask: Jun 22 00:26:40.795: [0000] c9 4d 0d 97 03 aa a9 0f 1b c8 33 73 01 f1 18 f5 ***The PMKID is hashed. The next messages are the same WPA/WPA2 4-Way handshake messages described thus far that are used in order to finish the encryption keys generation/installation. *dot1xMsgTask: Jun 22 00:26:40.795: ec:85:2f:15:39:32 Sending EAPOL-Key Message to mobile ec:85:2f:15:39:32 state INITPMK (message 1), replay counter 00.00.00.00.00.00.00.00 *Dot1x_NW_MsgTask_2: Jun 22 00:26:40.811: ec:85:2f:15:39:32 Received EAPOL-Key from mobile ec:85:2f:15:39:32 *Dot1x_NW_MsgTask_2: Jun 22 00:26:40.812: ec:85:2f:15:39:32 Received EAPOL-key in PTK_START state (message 2) from mobile ec:85:2f:15:39:32 *Dot1x_NW_MsgTask_2: Jun 22 00:26:40.812: ec:85:2f:15:39:32 PMK: Sending cache add *Dot1x_NW_MsgTask_2: Jun 22 00:26:40.812: ec:85:2f:15:39:32 Sending EAPOL-Key Message to mobile ec:85:2f:15:39:32 state PTKINITNEGOTIATING (message 3), replay counter 00.00.00.00.00.00.00.01 *Dot1x_NW_MsgTask_2: Jun 22 00:26:40.820: ec:85:2f:15:39:32 Received EAPOL-Key from mobile ec:85:2f:15:39:32 *Dot1x_NW_MsgTask_2: Jun 22 00:26:40.820: ec:85:2f:15:39:32 Received EAPOL-key in PTKINITNEGOTIATING state (message 4) from mobile ec:85:2f:15:39:32

シナリオ22：プロアクティブキーキャッシュを使用した高速セキュアローミング(FSR)の確認

使用するデバッグ：

debug client <mac addr>

*apfMsConnTask_2: Jun 21 21:48:50.562: 00:40:96:b7:ab:5c Reassociation received from mobile on BSSID 84:78:ac:f0:2a:92 ***This is the Reassociation Request from the client. *apfMsConnTask_2: Jun 21 21:48:50.563: 00:40:96:b7:ab:5c Processing RSN IE type 48, length 38 for mobile 00:40:96:b7:ab:5c ***The WLC/AP finds and Information Element that claims PMKID Caching support on the Association request that is sent from the client. *apfMsConnTask_2: Jun 21 21:48:50.563: 00:40:96:b7:ab:5c Received RSN IE with 1 PMKIDs from mobile 00:40:96:b7:ab:5c ***The Reassociation Request from the client comes with one PMKID. *apfMsConnTask_2: Jun 21 21:48:50.563:Received PMKID: (16) *apfMsConnTask_2: Jun 21 21:48:50.563: [0000] 91 65 c3 fb fc 44 75 48 67 90 d5 da df aa 71 e9 *apfMsConnTask_2: Jun 21 21:48:50.563: 00:40:96:b7:ab:5c Searching for PMKID in MSCB PMKID cache for mobile 00:40:96:b7:ab:5c *apfMsConnTask_2: Jun 21 21:48:50.563: 00:40:96:b7:ab:5c No valid PMKID found in the MSCB PMKID cache for mobile 00:40:96:b7:ab:5 ***As the client has never authenticated with this new AP, the WLC cannot find a valid PMKID to match the one provided by the client. 
***However, since the client performs PKC/OKC and not SKC (as per the following messages), the WLC computes a new PMKID based on the information gathered (the cached PMK,the client MAC address, and the new AP MAC address). *apfMsConnTask_2: Jun 21 21:48:50.563: 00:40:96:b7:ab:5c Trying to compute a PMKID from MSCB PMK cache for mobile 00:40:96:b7:ab:5c *apfMsConnTask_2: Jun 21 21:48:50.563: CCKM: Find PMK in cache: BSSID = (6) *apfMsConnTask_2: Jun 21 21:48:50.563: [0000] 84 78 ac f0 2a 90 *apfMsConnTask_2: Jun 21 21:48:50.563: CCKM: Find PMK in cache: realAA = (6) *apfMsConnTask_2: Jun 21 21:48:50.563: [0000] 84 78 ac f0 2a 92 *apfMsConnTask_2: Jun 21 21:48:50.563: CCKM: Find PMK in cache: PMKID = (16) *apfMsConnTask_2: Jun 21 21:48:50.563: [0000] 91 65 c3 fb fc 44 75 48 67 90 d5 da df aa 71 e9 *apfMsConnTask_2: Jun 21 21:48:50.563: CCKM: AA (6) *apfMsConnTask_2: Jun 21 21:48:50.563: [0000] 84 78 ac f0 2a 92 *apfMsConnTask_2: Jun 21 21:48:50.563: CCKM: SPA (6) *apfMsConnTask_2: Jun 21 21:48:50.563: [0000] 00 40 96 b7 ab 5c *apfMsConnTask_2: Jun 21 21:48:50.563: 00:40:96:b7:ab:5c Adding BSSID 84:78:ac:f0:2a:92 to PMKID cache at index 0 for station 00:40:96:b7:ab:5c *apfMsConnTask_2: Jun 21 21:48:50.563: New PMKID: (16) *apfMsConnTask_2: Jun 21 21:48:50.563:[0000] 91 65 c3 fb fc 44 75 48 67 90 d5 da df aa 71 e9 *apfMsConnTask_2: Jun 21 21:48:50.563: 00:40:96:b7:ab:5c Computed a valid PMKID from MSCB PMK cache for mobile 00:40:96:b7:ab:5c ***The new PMKID is computed and validated to match the one provided by the client, which is also computed with the same information. Hence, the fast-secure roam is possible. *apfMsConnTask_2: Jun 21 21:48:50.563: 00:40:96:b7:ab:5c Setting active key cache index 0 ---> 0 *apfMsConnTask_2: Jun 21 21:48:50.564: 00:40:96:b7:ab:5c Sending Assoc Response to station on BSSID 84:78:ac:f0:2a:92 (status 0) ApVapId 3 Slot ***The Reassociation response is sent to the client, which validates the fast-roam with PKC/OKC. *dot1xMsgTask: Jun 21 21:48:50.570: 00:40:96:b7:ab:5c Initiating RSN with existing PMK to mobile 00:40:96:b7:ab:5c ***WLC initiates a Robust Secure Network association with this client-and AP pair with the cached PMK found. Hence, EAP is avoided, as per the the next message. *dot1xMsgTask: Jun 21 21:48:50.570: 00:40:96:b7:ab:5c Skipping EAP-Success to mobile 00:40:96:b7:ab:5c *dot1xMsgTask: Jun 21 21:48:50.570: 00:40:96:b7:ab:5c Found an cache entry for BSSID 84:78:ac:f0:2a:92 in PMKID cache at index 0 of station 00:40:96:b7:ab:5c *dot1xMsgTask: Jun 21 21:48:50.570: Including PMKID in M1 (16) ***The hashed PMKID is included on the Message-1 of the WPA/WPA2 4-Way handshake. *dot1xMsgTask: Jun 21 21:48:50.570: [0000] 91 65 c3 fb fc 44 75 48 67 90 d5 da df aa 71 e9 ***The PMKID is hashed. The next messages are the same WPA/WPA2 4-Way handshake messages described thus far, which are used in order to finish the encryption keys generation/installation. *dot1xMsgTask: Jun 21 21:48:50.570: 00:40:96:b7:ab:5c Sending EAPOL-Key Message to mobile 00:40:96:b7:ab:5c state INITPMK (message 1), replay counter 00.00.00.00.00.00.00.00 *Dot1x_NW_MsgTask_4: Jun 21 21:48:50.589: 00:40:96:b7:ab:5 Received EAPOL-Key from mobile 00:40:96:b7:ab:5c *Dot1x_NW_MsgTask_4: Jun 21 21:48:50.589: 00:40:96:b7:ab:5c Received EAPOL-key in PTK_START state (message 2) from mobile 00:40:96:b7:ab:5c *Dot1x_NW_MsgTask_4: Jun 21 21:48:50.589: 00:40:96:b7:ab:5cPMK: Sending cache add *Dot1x_NW_MsgTask_4: Jun 21 21:48:50.590: 00:40:96:b7:ab:5c Sending EAPOL-Key Message to mobile 00:40:96:b7:ab:5c state PTKINITNEGOTIATING (message 3), replay counter 00.00.00.00.00.00.00.01 *Dot1x_NW_MsgTask_4: Jun 21 21:48:50.610: 00:40:96:b7:ab:5c Received EAPOL-Key from mobile 00:40:96:b7:ab:5c *Dot1x_NW_MsgTask_4: Jun 21 21:48:50.610: 00:40:96:b7:ab:5c Received EAPOL-key in PTKINITNEGOTIATING state (message 4) from mobile 00:40:96:b7:ab:5c 

デバッグの最初に示すように、クライアントからの再関連付け要求を受信した後にPMKIDを計算する必要があります。これは、PMKID を検証することで、キャッシュされた PMK が WPA2 4 ウェイ ハンドシェイクに使用され、暗号化キーが生成され、高速セキュア ローミングが完了したことを確認するために必要となります。デバッグのCCKMエントリを混同しないでください。これは、すでに説明したように、CCKMではなくPKC/OKCを実行するために使用されます。ここでは、CCKMは、PMKIDを計算するために値を処理する関数の名前など、これらの出力のためにWLCによって使用される単なる名前です。

シナリオ23:802.11rでの高速セキュアローミング(FSR)の確認

使用するデバッグ：

debug client <mac addr>

*apfMsConnTask_2: Jun 27 19:25:48.751: ec:85:2f:15:39:32 Doing preauth for this client over the Air ***WLC begins FT fast-secure roaming over-the-Air with this client and performs a type of preauthentication, 
because the client asks for this with FT on the Authentication frame that is sent to the new AP over-the-Air (before the Reassociation Request). *apfMsConnTask_2: Jun 27 19:25:48.751: ec:85:2f:15:39:32 Doing local roaming for destination address 84:78:ac:f0:2a:96 ***WLC performs the local roaming event with the new AP to which the client roams. *apfMsConnTask_2: Jun 27 19:25:48.751: ec:85:2f:15:39:32 Got 1 AKMs in RSNIE *apfMsConnTask_2: Jun 27 19:25:48.751: ec:85:2f:15:39:32 RSNIE AKM matches with PMK cache entry :0x3 ***WLC receives one PMK from this client (known as AKM here), which matches the PMK cache entry hold for this client. *apfMsConnTask_2: Jun 27 19:25:48.751: ec:85:2f:15:39:32 Created a new preauth entry for AP:84:78:ac:f0:2a:96 *apfMsConnTask_2: Jun 27 19:25:48.751: Adding MDIE, ID is:0xaaf0 ***WLC creates a new preauth entry for this AP-and-Client pair, and adds the MDIE information. *apfMsConnTask_2: Jun 27 19:25:48.763: Processing assoc-req station:ec:85:2f:15:39:32 AP:84:78:ac:f0:2a:90-00 thread:144bef38 *apfMsConnTask_2: Jun 27 19:25:48.763: ec:85:2f:15:39:32 Reassociation received from mobile on BSSID 84:78:ac:f0:2a:96 ***Once the client receives the Authentication frame reply from the WLC/AP, the Reassociation request is sent, which is received at the new AP to which the client roams. *apfMsConnTask_2: Jun 27 19:25:48.764: ec:85:2f:15:39:32 Marking this mobile as TGr capable. *apfMsConnTask_2: Jun 27 19:25:48.764: ec:85:2f:15:39:32 Processing RSN IE type 48, length 38 for mobile ec:85:2f:15:39:32 *apfMsConnTask_2: Jun 27 19:25:48.765: ec:85:2f:15:39:32 Roaming succeed for this client. ***WLC confirms that the FT fast-secure roaming is successful for this client. *apfMsConnTask_2: Jun 27 19:25:48.765: Sending assoc-resp station:ec:85:2f:15:39:32 AP:84:78:ac:f0:2a:90-00 thread:144bef38 *apfMsConnTask_2: Jun 27 19:25:48.766: Adding MDIE, ID is:0xaaf0 *apfMsConnTask_2: Jun 27 19:25:48.766: ec:85:2f:15:39:32 Including FT Mobility Domain IE (length 5) in reassociation assoc Resp to mobile *apfMsConnTask_2: Jun 27 19:25:48.766: ec:85:2f:15:39:32 Sending Assoc Response to station on BSSID 84:78:ac:f0:2a:96 (status 0) ApVapId 7 Slot 0 ***The Reassociation response is sent to the client, which includes the FT Mobility Domain IE. *dot1xMsgTask: Jun 27 19:25:48.769: ec:85:2f:15:39:32 Finishing FT roaming for mobile ec:85:2f:15:39:32 ***FT roaming finishes and EAP is skipped (as well as any other key management handshake), so the client is ready to pass encrypted data frames with the current AP. *dot1xMsgTask: Jun 27 19:25:48.769: ec:85:2f:15:39:32 Skipping EAP-Success to mobile ec:85:2f:15:39:32

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