From: "Lars Ericsson" <Lars_Ericsson@telia.com>
To: <linux-wireless@vger.kernel.org>, <hostap@lists.shmoo.com>
Subject: Roaming problems
Date: Tue, 22 Apr 2008 17:09:14 +0200 [thread overview]
Message-ID: <00ff01c8a48a$d4063d80$0b3ca8c0@gotws1589> (raw)
[-- Attachment #1: Type: text/plain, Size: 1896 bytes --]
Hi,
I'm currently running a number of sites using the RT61 WLAN chipset.
>From time to time we have fatal roaming problems.
I have collected a trace that show normal and problem situation.
Any help explaining the cause of the problem is appreciated.
Below is a summary of the trace. Attached it the complete trace.
/Lars
CASE 1: The above trace is a typical trace from a roaming atempt.
==========================================================
361830.763657 We lost conatct with current AP 00:0e:d7:ac:84:20
361831.252992 We have selected the new AP 00:0f:24:d1:5e:e0
361831.256287 Why do we try to authenticate with previous AP
00:0e:d7:ac:84:20 ? <-----
361831.261071 Finaly we selected the correct AP 00:0f:24:d1:5e:e0
361831.295573 We are up and running
CASE 2: The above trace is a typical trace from a roaming atempt.
==========================================================
362123.346748 We lost conatct with current AP 00:0f:24:d1:5e:e0
362123.842242 We have selected the new AP 00:0e:d7:ac:84:20
362123.861586 We try connect AP 00:0e:d7:ac:84:20
362123.874442 We are up and running
CASE 3: The above trace is a typical trace from a roaming atempt.
===================================================================
362441.946825 We lost conatct with current AP 00:0e:d7:ac:84:20
362442.449435 We have selected the new AP 00:0f:24:a3:b8:60
362442.466944 Why do we try to authenticate with previous AP
00:0e:d7:ac:84:20 ? <-----
362442.470147 Finaly we selected the correct AP 00:0f:24:a3:b8:60
361831.295573 We are up and running
362443.066379 Timeout.
362444.886776 New try with selected AP 00:0f:24:a3:b8:60
362444.904429 Associated
362444.904883 What initiate this 'Initial auth_alg=0' with the associated
AP ? <-----
362444.908677 What initiate this 'Initial auth_alg=0' with AP
00:0f:24:d1:5e:e0 ? <-----
362445.505964 No one reacts on the 'timed out' event <-----
[-- Attachment #2: trace.txt --]
[-- Type: text/plain, Size: 10936 bytes --]
Hi,
I'm currently running a number of sites using the RT61 WLAN chipset.
>From time to time we have fatal roaming problems.
I have collected a trace that show normal and problem situation.
Any help explaning the cause of the problem is apprechiated.
/Lars
[361830.763657] wlan0: To few (3) beacons from current AP 00:0e:d7:ac:84:20 - assume out of range
[361830.763726] phy0: Removed STA 00:0e:d7:ac:84:20
[361830.903691] HW CONFIG: channel=1 freq=2412 phymode=2
[361830.959483] HW CONFIG: channel=6 freq=2437 phymode=2
[361831.032651] HW CONFIG: channel=7 freq=2442 phymode=2
[361831.104153] HW CONFIG: channel=11 freq=2462 phymode=2
[361831.174702] HW CONFIG: channel=13 freq=2472 phymode=2
[361831.239425] HW CONFIG: channel=1 freq=2412 phymode=2
[361831.252992] wlan0: set_encrypt - unknown addr 00:0f:24:d1:5e:e0
[361831.253576] HW CONFIG: channel=1 freq=2412 phymode=2
[361831.256238] wlan0: Initial auth_alg=0
[361831.256287] wlan0: authenticate with AP 00:0e:d7:ac:84:20
[361831.258615] wlan0: RX authentication from 00:0e:d7:ac:84:20 (alg=0 transaction=2 status=0)
[361831.258662] wlan0: authenticated
[361831.258692] wlan0: associate with AP 00:0e:d7:ac:84:20
[361831.260485] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 0 - CWmin: 4, CWmax: 10, Aifs: 2.
[361831.260544] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 1 - CWmin: 4, CWmax: 10, Aifs: 2.
[361831.260586] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 2 - CWmin: 4, CWmax: 10, Aifs: 2.
[361831.260628] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 3 - CWmin: 4, CWmax: 10, Aifs: 2.
[361831.260670] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 4 - CWmin: 4, CWmax: 10, Aifs: 2.
[361831.260712] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 7 - CWmin: 5, CWmax: 10, Aifs: 2.
[361831.261031] wlan0: Initial auth_alg=0
[361831.261071] wlan0: authenticate with AP 00:0f:24:d1:5e:e0
[361831.282732] wlan0: RX authentication from 00:0f:24:d1:5e:e0 (alg=0 transaction=2 status=0)
[361831.282783] wlan0: authenticated
[361831.283546] wlan0: associate with AP 00:0f:24:d1:5e:e0
[361831.295124] wlan0: RX ReassocResp from 00:0f:24:d1:5e:e0 (capab=0x431 status=0 aid=95)
[361831.295221] wlan0: associated
[361831.295269] wlan0: CTS protection enabled (BSSID=00:0f:24:d1:5e:e0)
[361831.295573] phy0: Added STA 00:0f:24:d1:5e:e0
[361831.295628] wlan0: WMM queue=2 aci=0 acm=0 aifs=3 cWmin=15 cWmax=1023 burst=0
[361831.295668] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 2 - CWmin: 4, CWmax: 10, Aifs: 3.
[361831.295712] wlan0: WMM queue=3 aci=1 acm=0 aifs=7 cWmin=15 cWmax=1023 burst=0
[361831.295749] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 3 - CWmin: 4, CWmax: 10, Aifs: 7.
[361831.295792] wlan0: WMM queue=1 aci=2 acm=0 aifs=2 cWmin=7 cWmax=15 burst=30
[361831.295829] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 1 - CWmin: 3, CWmax: 4, Aifs: 2.
[361831.295872] wlan0: WMM queue=0 aci=3 acm=0 aifs=2 cWmin=3 cWmax=7 burst=15
[361831.295908] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 0 - CWmin: 2, CWmax: 3, Aifs: 2.
CASE 1: The above trace is a typical trace from a roaming atempt.
==========================================================
361830.763657 We lost conatct with current AP 00:0e:d7:ac:84:20
361831.252992 We have selected the new AP 00:0f:24:d1:5e:e0
361831.256287 Why do we try to authenticate with previous AP 00:0e:d7:ac:84:20 ? <-----
361831.261071 Finaly we selected the correct AP 00:0f:24:d1:5e:e0
361831.295573 We are up and running
[362123.346748] wlan0: To few (3) beacons from current AP 00:0f:24:d1:5e:e0 - assume out of range
[362123.346815] phy0: Removed STA 00:0f:24:d1:5e:e0
[362123.480600] HW CONFIG: channel=1 freq=2412 phymode=2
[362123.539316] HW CONFIG: channel=6 freq=2437 phymode=2
[362123.611786] HW CONFIG: channel=7 freq=2442 phymode=2
[362123.683135] HW CONFIG: channel=11 freq=2462 phymode=2
[362123.746670] HW CONFIG: channel=13 freq=2472 phymode=2
[362123.822505] HW CONFIG: channel=1 freq=2412 phymode=2
[362123.842242] wlan0: set_encrypt - unknown addr 00:0e:d7:ac:84:20
[362123.852958] HW CONFIG: channel=1 freq=2412 phymode=2
[362123.853081] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 0 - CWmin: 4, CWmax: 10, Aifs: 2.
[362123.853128] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 1 - CWmin: 4, CWmax: 10, Aifs: 2.
[362123.853169] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 2 - CWmin: 4, CWmax: 10, Aifs: 2.
[362123.853211] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 3 - CWmin: 4, CWmax: 10, Aifs: 2.
[362123.853253] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 4 - CWmin: 4, CWmax: 10, Aifs: 2.
[362123.853295] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 7 - CWmin: 5, CWmax: 10, Aifs: 2.
[362123.861530] wlan0: Initial auth_alg=0
[362123.861586] wlan0: authenticate with AP 00:0e:d7:ac:84:20
[362123.864873] wlan0: RX authentication from 00:0e:d7:ac:84:20 (alg=0 transaction=2 status=0)
[362123.864922] wlan0: authenticated
[362123.864952] wlan0: associate with AP 00:0e:d7:ac:84:20
[362123.874048] wlan0: RX ReassocResp from 00:0e:d7:ac:84:20 (capab=0x431 status=0 aid=181)
[362123.874097] wlan0: associated
[362123.874140] wlan0: CTS protection enabled (BSSID=00:0e:d7:ac:84:20)
[362123.874442] phy0: Added STA 00:0e:d7:ac:84:20
[362123.874497] wlan0: WMM queue=2 aci=0 acm=0 aifs=3 cWmin=15 cWmax=1023 burst=0
[362123.883166] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 2 - CWmin: 4, CWmax: 10, Aifs: 3.
[362123.883217] wlan0: WMM queue=3 aci=1 acm=0 aifs=7 cWmin=15 cWmax=1023 burst=0
[362123.883255] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 3 - CWmin: 4, CWmax: 10, Aifs: 7.
[362123.883298] wlan0: WMM queue=1 aci=2 acm=0 aifs=2 cWmin=7 cWmax=15 burst=30
[362123.883335] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 1 - CWmin: 3, CWmax: 4, Aifs: 2.
[362123.883376] wlan0: WMM queue=0 aci=3 acm=0 aifs=2 cWmin=3 cWmax=7 burst=15
[362123.883413] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 0 - CWmin: 2, CWmax: 3, Aifs: 2.
CASE 2: The above trace is a typical trace from a roaming atempt.
==========================================================
362123.346748 We lost conatct with current AP 00:0f:24:d1:5e:e0
362123.842242 We have selected the new AP 00:0e:d7:ac:84:20
362123.861586 We try connect AP 00:0e:d7:ac:84:20
362123.874442 We are up and running
[362441.946825] wlan0: To few (0) beacons from current AP 00:0e:d7:ac:84:20 - assume out of range
[362441.946894] phy0: Removed STA 00:0e:d7:ac:84:20
[362442.087032] HW CONFIG: channel=1 freq=2412 phymode=2
[362442.147484] HW CONFIG: channel=6 freq=2437 phymode=2
[362442.215884] HW CONFIG: channel=7 freq=2442 phymode=2
[362442.287306] HW CONFIG: channel=11 freq=2462 phymode=2
[362442.360678] HW CONFIG: channel=13 freq=2472 phymode=2
[362442.435708] HW CONFIG: channel=1 freq=2412 phymode=2
[362442.449435] wlan0: set_encrypt - unknown addr 00:0f:24:a3:b8:60
[362442.458892] HW CONFIG: channel=7 freq=2442 phymode=2
[362442.466891] wlan0: Initial auth_alg=0
[362442.466944] wlan0: authenticate with AP 00:0e:d7:ac:84:20
[362442.467815] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 0 - CWmin: 4, CWmax: 10, Aifs: 2.
[362442.467875] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 1 - CWmin: 4, CWmax: 10, Aifs: 2.
[362442.467917] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 2 - CWmin: 4, CWmax: 10, Aifs: 2.
[362442.467959] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 3 - CWmin: 4, CWmax: 10, Aifs: 2.
[362442.468000] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 4 - CWmin: 4, CWmax: 10, Aifs: 2.
[362442.468043] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 7 - CWmin: 5, CWmax: 10, Aifs: 2.
[362442.470093] wlan0: Initial auth_alg=0
[362442.470147] wlan0: authenticate with AP 00:0f:24:a3:b8:60
[362442.666716] wlan0: authenticate with AP 00:0f:24:a3:b8:60
[362442.869682] wlan0: authenticate with AP 00:0f:24:a3:b8:60
[362443.066379] wlan0: authentication with AP 00:0f:24:a3:b8:60 timed out
[362444.515475] HW CONFIG: channel=1 freq=2412 phymode=2
[362444.582299] HW CONFIG: channel=6 freq=2437 phymode=2
[362444.664275] HW CONFIG: channel=7 freq=2442 phymode=2
[362444.735721] HW CONFIG: channel=11 freq=2462 phymode=2
[362444.802200] HW CONFIG: channel=13 freq=2472 phymode=2
[362444.875930] HW CONFIG: channel=7 freq=2442 phymode=2
[362444.878856] HW CONFIG: channel=1 freq=2412 phymode=2
[362444.886723] wlan0: Initial auth_alg=0
[362444.886776] wlan0: authenticate with AP 00:0f:24:a3:b8:60
[362444.887643] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 0 - CWmin: 4, CWmax: 10, Aifs: 2.
[362444.887778] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 1 - CWmin: 4, CWmax: 10, Aifs: 2.
[362444.887821] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 2 - CWmin: 4, CWmax: 10, Aifs: 2.
[362444.887863] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 3 - CWmin: 4, CWmax: 10, Aifs: 2.
[362444.887904] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 4 - CWmin: 4, CWmax: 10, Aifs: 2.
[362444.887946] phy0 -> rt2x00mac_conf_tx: Info - Configured TX ring 7 - CWmin: 5, CWmax: 10, Aifs: 2.
[362444.896286] wlan0: RX authentication from 00:0f:24:a3:b8:60 (alg=0 transaction=2 status=0)
[362444.896340] wlan0: authenticated
[362444.896370] wlan0: associate with AP 00:0f:24:a3:b8:60
[362444.904391] wlan0: RX ReassocResp from 00:0f:24:a3:b8:60 (capab=0x431 status=0 aid=126)
[362444.904429] wlan0: associated
[362444.904662] phy0: Added STA 00:0f:24:a3:b8:60
[362444.904800] wlan0: Initial auth_alg=0
[362444.904838] wlan0: authenticate with AP 00:0f:24:a3:b8:60
[362444.908677] wlan0: Initial auth_alg=0
[362444.908735] wlan0: authenticate with AP 00:0f:24:d1:5e:e0
[362445.106501] wlan0: authenticate with AP 00:0f:24:d1:5e:e0
[362445.306037] wlan0: authenticate with AP 00:0f:24:d1:5e:e0
[362445.505964] wlan0: authentication with AP 00:0f:24:d1:5e:e0 timed out
CASE 3: The above trace is a typical trace from a roaming atempt.
===================================================================
362441.946825 We lost conatct with current AP 00:0e:d7:ac:84:20
362442.449435 We have selected the new AP 00:0f:24:a3:b8:60
362442.466944 Why do we try to authenticate with previous AP 00:0e:d7:ac:84:20 ? <-----
362442.470147 Finaly we selected the correct AP 00:0f:24:a3:b8:60
361831.295573 We are up and running
362443.066379 Timeout.
362444.886776 New try with selected AP 00:0f:24:a3:b8:60
362444.904429 Associated
362444.904883 What initiate this 'Initial auth_alg=0' with the associated AP ? <-----
362444.908677 What initiate this 'Initial auth_alg=0' with AP 00:0f:24:d1:5e:e0 ? <-----
362445.505964 No one reacts on the 'timed out' event <-----
>From this point, no WLAN communication was operating.
next reply other threads:[~2008-04-22 16:19 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-22 15:09 Lars Ericsson [this message]
2008-04-23 8:39 ` Roaming problems Lars Ericsson
2008-04-23 11:12 ` Johannes Berg
2008-04-23 13:53 ` Dan Williams
2008-04-23 14:59 ` Johannes Berg
2008-04-23 16:21 ` Dan Williams
2008-04-23 16:39 ` Johannes Berg
2008-04-23 16:44 ` Lars Ericsson
2008-04-23 16:53 ` Johannes Berg
2008-04-23 17:12 ` Lars Ericsson
2008-04-23 17:59 ` Johannes Berg
2008-04-23 16:27 ` Lars Ericsson
2008-04-23 16:31 ` Dan Williams
2008-04-23 20:47 ` John W. Linville
2008-04-24 6:45 ` Holger Schurig
2008-04-24 9:55 ` Lars Ericsson
2008-04-24 9:59 ` Johannes Berg
2008-04-24 17:36 ` Lars Ericsson
2008-04-26 20:54 ` Johannes Berg
2008-04-28 18:28 ` Lars Ericsson
2008-04-28 18:34 ` Johannes Berg
2008-04-28 18:43 ` Dan Williams
2008-04-28 20:22 ` Lars Ericsson
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