5 min. disconnection

[atryaskin-r]

my cisco 350 workgroup bridge disconnecting from 350 BRIDGE (working in AP mode) every 5 minute +/- 0-10 sec.

log history from WGB:

1/20 12:06:48 I Connected to parent Cisco-3a5560 <AP-NAME>

1/20 12:06:48 S Lost our association, disassociate with status (7) from parent

1/20 12:01:36 I Connected to parent Cisco-3a5560 <AP-NAME>

1/20 12:01:36 S Lost our association, disassociate with status (7) from parent

1/20 11:56:45 I Connected to parent Cisco-3a5560 <AP-NAME>

1/20 11:56:45 S Lost our association, disassociate with status (7) from parent

1/20 11:51:33 I Connected to parent Cisco-3a5560 <AP-NAME>

1/20 11:51:33 S Lost our association, disassociate with status (7) from parent

1/20 11:46:32 I Connected to parent Cisco-3a5560 <AP-NAME>

1/20 11:46:32 S Lost our association, disassociate with status (7) from parent

1/20 11:41:42 I Connected to parent Cisco-3a5560 <AP-NAME>

1/20 11:41:42 S Lost our association, disassociate with status (7) from parent

and so on ...

log history from BRIDGE (AP mode):

2003/01/20 12:11:50 (Info): Station [WGB_NAME]000a8aa2c06b Reassociated

2003/01/20 12:11:49 (Info): Disassociating [WGB_NAME]000a8aa2c06b, reason "Not Associated"

2003/01/20 12:11:48 (Info): Station [WGB_NAME000a8aa2c06b roamed

2003/01/20 12:06:57 (Info): Station [WGB_NAME]000a8aa2c06b Reassociated

2003/01/20 12:06:57 (Info): Disassociating [WGB_NAME]000a8aa2c06b, reason "Not Associated"

2003/01/20 12:06:46 (Info): Station [WGB_NAME]000a8aa2c06b roamed

2003/01/20 12:01:45 (Info): Station [WGB_NAME]000a8aa2c06b Reassociated

2003/01/20 12:01:45 (Info): Disassociating [WGB_NAME]000a8aa2c06b, reason "Not Associated"

2003/01/20 12:01:45 (Info): Station [Lorien_W]000a8aa2c06b roamed

and so on ...

No timeout settings on my AP and WGB corresponds to 5 minute +/- 2-10 sec.

Why this happens exactly in 5 minute interval ?

[atryaskin-r]

Hello brothers.

My problem with 5 minute disconnection still not solved. But ... i understand one thing.

This is not the WGB disconnection. My Cisco Bridges (350 series) in AP mode disconnects all it clients in 5 minute interval. I have about 7 bridges in my network. All of them disconnect there clients in 5 minute interval. Except one. It is connected to catalyst switch. It works fine.

Here is my network sheme:

[ROUTER] == [CATALYST] == [ROOT-BRIDGE1] --------- [BRIDGE_in_client_mode] == [ROOT-BRIDGE2] --------- (many clients with WGB 350 series)

ROOT_BRIDGE2 disconnetcs it clients in 5 minute interval. All clients who works throught ROOT_BRIDGE1 DO NOT disconnetcs from there parent.

--- - radio link

== - ethernet link

Can anybody help ?

[s.matyas]

Hi!

Try to use longer beacon period in your AP(or bridge in AP mode) .

For example use 1000 instead of the default 100.

It may be help

Szicsu

[atryaskin-r]

this not helped. Bridge still disconnects it clients.

[s.matyas]

Hello!

In the WGB config Do you set the MAC address of the AP(Bridge) ?

Szicsu

[atryaskin-r]

I tried to set the MAC address for parent bribge on WGBs. Problem still exists.

Problem is in the BRIDGES ! They are disconnect there clients every 5 minute. I mean that the disconnection is initiated from the bridges, not WGBs.

[atryaskin-r]

hi again brothers.

i'm still not solved my problem. I tried to listem 802.11b managenet and controll packets with sniffer. Now i know exatly that the initiator of this 5 minute disconnection is BRIDGE ! My sniffer detected that it is BRIDGE's disassotiation packet causes this disconnection.

Here is dump of the alert trace buffer on my bridge for one of it clients:

===Beginning of MY_BSA_BRIDGE Detailed Trace Log===

00:29:22 +1762.038462 Packet Alert: 802.11 Unknown Recv:

00:29:30 + 8.000000 Packet Alert: 802.11 Unknown Recv:

00:29:41 + 10.961538 Packet Alert: 802.11 Unknown Recv:

00:29:52 + 11.019231 Packet Alert: 802.11 Unknown Recv:

00:30:02 + 10.961538 Packet Alert: 802.11 Unknown Recv:

00:30:13 + 11.000000 Packet Alert: 802.11 Unknown Recv:

00:30:24 + 11.000000 Packet Alert: 802.11 Unknown Recv:

00:30:36 + 11.038462 Packet Alert: 802.11 Unknown Recv:

00:30:46 + 10.942308 Packet Alert: 802.11 Unknown Recv:

00:30:49 + 2.365385 Packet Alert: 802.11 Unknown Recv:

00:30:59 + 10.615385 Packet Alert: 802.11 Unknown Recv:

00:31:10 + 11.000000 Packet Alert: 802.11 Mgmt Xmit: 00:07:85:92:bb:9c -> 00:0b:46:92:26:c3 addr3=00:07:85:92:bb:9c

dot1dTpPort: src=0 dest=2 priority=7 vlanID=0

802.11 Xmit: rate=0 (sub)type=Disassociation duration/AID=16518 seqCtrl=0x05e5

contents: 0000: a0 00 86 40 00 0b 46 92 26 c3 00 07 85 92 bb 9c |...@..F.&.......|

00:31:11 + 0.326923 Packet Alert: 802.11 Mgmt Recv: 00:0b:46:92:26:c3 -> 00:07:85:92:bb:9c addr3=00:07:85:92:bb:9c

dot1dTpPort: src=2 dest=0 priority=0 vlanID=0

802.11 Recv: quality=9 strength=76 rate=2 channel=1 preamble=L (sub)type=ReassociateRequest duration/AID=258 seqCtrl=0x04e4

contents: 0000: 20 00 02 01 00 07 85 92 bb 9c 00 0b 46 92 26 c3 | ...........F.&.|

00:31:11 + 0.000000 Packet Alert: 802.11 Mgmt Xmit: 00:07:85:92:bb:9c -> 00:0b:46:92:26:c3 addr3=00:07:85:92:bb:9c

dot1dTpPort: src=0 dest=2 priority=7 vlanID=0

802.11 Xmit: rate=0 (sub)type=ReassociateResponse duration/AID=1792 seqCtrl=0x0390

contents: 0000: 30 00 00 07 00 0b 46 92 26 c3 00 07 85 92 bb 9c |0.....F.&.......|

00:31:11 + 0.000000 Packet Alert: 802.3 Xmit: len 42 00:0b:46:92:26:c3 -> [DDP Mcast]01:40:96:ff:ff:00

dot1dTpPort: src=2 dest=1 priority=7 vlanID=0

SNAP: org 004096 type 0x0000

Aironet DDP: length=34 protocolType=InterAP_Registration function=DeregNotice ultimate: 00:0b:46:92:26:c3 -> [DDP Mcast]01:40:96:ff:ff:00

contents: 0000: 01 40 96 ff ff 00 00 0b 46 92 26 c3 00 2a aa aa |.@......F.&..*..|

00:31:11 + 0.000000 Packet Alert: 802.11/802.2 Xmit: len 58 00:07:85:92:bb:9c -> 00:0b:46:92:26:c3 addr3=00:07:85:92:bb:9c

dot1dTpPort: src=0 dest=2 priority=7 vlanID=0

802.11 Xmit: rate=0

SNAP: org 004096 type 0x0000

Aironet DDP: length=50 protocolType=GetInfo function=GenInfoReq ultimate: 00:07:85:92:bb:9c -> 00:0b:46:92:26:c3

contents: 0000: 08 02 18 99 00 0b 46 92 26 c3 00 07 85 92 bb 9c |......F.&.......|

===End of R01Off_BSA_B Detailed Trace Log===