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AP and Bridge "see each other" on different frequencies?!?

[all are 350-series devices on 12.01T1]

I have a (client) bridge at a remote site picking up a signal from the (root) bridge on channel 2. At the same site where I have the (client) bridge I also have an access point transmitting on channel 10. Both the (client) bridge and the access point are using a Cisco Yagi antenna (one for each, primary/right send/receive only) mounted on the same mast about two feet apart from each other pointing away from each other at about a 30 degree angle.

According to the log, the access point tries to latch on to the (client) bridge even though it is on a totally different frequency:

<<<<<snip<<<<<

Time Severity Description

2003/03/03 15:11:18 Info Station [BR350-CP-02]00409657d160 roamed

2003/03/03 15:11:17 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:11:15 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:11:13 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:11:11 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:11:09 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:11:07 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:11:05 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:11:03 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:11:01 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:10:59 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:10:57 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:10:55 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:10:54 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:10:54 Warning Station [BR350-CP-02]00409657d160 Failed Reassociation, status "Can Not Support All Requested Capabilities"

2003/03/03 15:10:54 Info Station [BR350-CP-02]00409657d160 Authenticated

2003/03/03 15:08:36 Info Station [BR350-CP-02]00409657d160 roamed

2003/03/03 15:08:35 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:08:33 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

2003/03/03 15:08:30 Info Disassociating [BR350-CP-02]00409657d160, reason "Not Associated"

>>>>>snip>>>>>

At the same time, the (client) bridge reports occasionanally losing its connectivity to the parent (root) bridge - probably due to the fact that we have only eye-balled the antenna orientation so far:

<<<<<snip<<<<<

2003/03/03 15:10:55 Info Associated to Parent [BR350-NM-02]00409657e827

2003/03/03 15:10:55 Info Lost Association with Parent

2003/03/03 15:08:29 Info Associated to Parent [BR350-NM-02]00409657e827

2003/03/03 15:08:29 Warning Lost Authentication with Parent

2003/03/03 15:08:28 Warning Lost Authentication with Parent

2003/03/03 15:08:28 Warning Lost Authentication with Parent

2003/03/03 15:08:28 Warning Lost Authentication with Parent

2003/03/03 15:08:28 Info Associated to Parent [BR350-NM-02]00409657e827

2003/03/03 15:08:28 Info Deauthenticating [BR350-NM-02]00409657e827, reason "Not Authenticated"

2003/03/03 15:08:28 Info Lost Association with Parent

2003/03/03 15:04:01 Info Associated to Parent [BR350-NM-02]00409657e827

2003/03/03 15:04:01 Warning Lost Authentication with Parent

2003/03/03 15:04:00 Warning Lost Authentication with Parent

2003/03/03 15:04:00 Info Associated to Parent [BR350-NM-02]00409657e827

2003/03/03 15:04:00 Info Deauthenticating [BR350-NM-02]00409657e827, reason "Not Authenticated"

2003/03/03 15:04:00 Info Lost Association with Parent

2003/03/03 14:46:05 Info Associated to Parent [BR350-NM-02]00409657e827

2003/03/03 14:46:05 Info Deauthenticating [BR350-NM-02]00409657e827, reason "Not Authenticated"

2003/03/03 14:46:05 Info Lost Association with Parent

2003/03/03 14:38:37 Info Associated to Parent [BR350-NM-02]00409657e827

>>>>>snip>>>>>

In any case, however, I assumed that the access point would never "see" the bridges due to its different operating frequency. I am afraid that this interference is cause for bandwidth degradation and/or the association problems reported by the (client) bridge.

Thanks for any hints how to solve this problem!

1 REPLY
Cisco Employee

Re: AP and Bridge "see each other" on different frequencies?!?

Hi ,

Do you have different SSID on AP than on the root bridge ?

Also to avoid this happening you can put mac address filter on root bridge

Nilesh

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