Re: OT: Wireless Signal Strength

HI Sogo,
this client has a very poor antivirus solution and no patch management
solution deployed..... so the possibility of malicious traffic is there.
There are microwaves on each floor but in a closed pantry room, and the APs
are much far from them. This problem has just started to come since last one
week.

Regards,
Khurram
2010/12/26 Shogo Kobayashi <k.shogo_at_gmail.com>

> Hi
>
> As long as RRM is properly working, the channel must be fine,,, if there is
> no microwave or other things like in hospital...
> Maybe signal is strong enough, but noise causes the slowness.
>
> Do you see any suspicious traffic going out from your client? Some of
> vendor software sending lots of traffic once client connected to network.
> And if you are using bluetooth on client, turn it off to see whether
problem
> solves.
>
> Best Regards,
>
> On Sun, Dec 26, 2010 at 2:18 PM, Khurram Noor <
> engr.khurramnoor_at_googlemail.com> wrote:
>
>> Dear all,
>>
>>
>>
>> I am having a strange problem with a client. He has around 25 access
>> points
>> installed in a 8 floor building. They are using cisco AP 1140 with 2 WLCs
>> 5508 for management. Things were fine in the beginning but now the problem
>> is with the signal strength. The signal bars on any system before
>> connection
>> shows excellent strength, but as soon as the system gets connected, the
>> signal strength starts to decrease and becomes poor. this causes latency
>> and
>> timeout. Browsing becomes really slow and wireless users are suffering.
>>
>>
>>
>> Wireless Lan controller runs an algorithm called RRM, which automatically
>> adjust Tx power, channel assignment and many other parameter. If there is
>> someone in this group who know can tell what settings on WLC need to
>> change.
>> Could this be a result of some power issue on the catalyst 4500 switch
>> which
>> is a POE supported? Or is this some malware kind of thing?
>>
>>
>> By the way wired users have no such problem (latency, delay etc)
>>
>> --
>> Khurram Noor
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
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>
>
> _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
> $p*L 39'^ Shogo KOBAYASHI
> k.shogo_at_gmail.com (e-mail)
>

--
Khurram Noor
CCIE # 24419
http://www.linkedin.com/in/khurramnoor
Blogs and organic groups at http://www.ccie.net