Re: OT: Wireless Signal Strength

Yes, this is an important point. As i calculated, 18 out of 24 Aps are using
channel 1 and the rest of 6 are using channel 6. The first floor and eight
floor are the one which has most problems, both have only 2 APs convering
the whole floors and both APs are in different channels, i.e. 1 and 6
respectively. Again this is dynamic assignment by RRM.

Regards,
Khurram

On Sun, Dec 26, 2010 at 8:46 PM, Mohammad Saeed <mzsaeed_at_gmail.com> wrote:

> Also try resetting the AP's one by one, what it will possibally do
> that once w=one AP is UP and its using channel 1, the 2nd AP will
> startup, detetct that other AP is using channel 1 and will start using
> channel 6 or other non-overlapping channel.
>
> Wassalam,
>
> Mohammad Zahid Saeed
>
> On Sun, Dec 26, 2010 at 10:17 AM, Khurram Noor
> <engr.khurramnoor_at_googlemail.com> wrote:
> > Salam Saeed,
> >
> > I checked your idea. I used one D-link wireless router for Wi-Fi
> > connectivity on the same machine where signal strength problem was
> > encountered, but it is working fine. even on greater distance.
> >
> > The thing with WLC managed AP which is very surprising is that the users
> > even sitting very close to the APs are encountring this problem. There
> are
> > two WLCs, each has 12 APs connected. This problem is particular in areas
> of
> > floor were are only two APs on the whole floor. By the way those APs are
> not
> > properly placed so i will try changing the position to see if convergance
> > for wireless network improves.
> >
> > Regards,
> > Khurram
> > On Sun, Dec 26, 2010 at 4:48 PM, Mohammad Saeed <mzsaeed_at_gmail.com>
> wrote:
> >>
> >> Assalamualaikum,
> >>
> >> If this is problem with all AP's, then its highly unlikely that all
> >> AP's have started having HW problem at once. I would suspect most
> >> likely there is some interference problem, check if something has been
> >> changed/added in the building?
> >> I would recommend installing a standalone AP (not registering with
> >> WLC) and connect to that AP to eliminate WLC's are not causing the
> >> issue. If cleint clnnecting to that AP does not suffer similar signal
> >> strength issue, then check whats been changed in WLC?
> >>
> >> Wassalam,
> >>
> >> Mohammad Zahid Saeed
> >>
> >> On Sun, Dec 26, 2010 at 1:18 AM, 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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> >> >
> >> >
> >> >
> >> >
> >> >
> >
> >
>

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