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RE: [Karlnet] Strange retransmit problem

To: <karlnet@WISPNotes.com>
Subject: RE: [Karlnet] Strange retransmit problem
From: "Dan Metcalf" <dan.metcalf@wbsysnet.com>
Reply-to: karlnet@WISPNotes.com
Date: Sun, 15 Dec 2002 22:33:42 -0500
List-post: <mailto:karlnet@WISPNotes.com>
NO other problems at all besides the # of retransmits, you must be using
amps to get +35dBm snr?

Dan Metcalf
Wireless Broadband Systems
http://www.wbsysnet.com/
877-685-0578
dan.metcalf@wbsysnet.com


> -----Original Message-----
> From: karlnet-admin@WISPNotes.com [mailto:karlnet-admin@WISPNotes.com]
On
> Behalf Of bhrbek@bextreme.net
> Sent: Sunday, December 15, 2002 6:37 PM
> To: karlnet@WISPNotes.com
> Subject: RE: [Karlnet] Strange retransmit problem
> 
> I would imagine that with a 7 dbm SNR, you are having other problems
as
> well.
> 
> What is a LOT of re-trans?  I've got some VERY good links, +35dbm SNR
with
> 30,000+ retrans and only 900,000 transmits.  That worries me.
> 
> 
> 
> -----Original Message-----
> From: Dan Metcalf [mailto:dan.metcalf@wbsysnet.com]
> Sent: Sunday, December 15, 2002 5:25 PM
> To: karlnet@WISPNotes.com
> Subject: RE: [Karlnet] Strange retransmit problem
> 
> 
> Kevin,
> 
> On the link we see a huge # of re-trans, the Signal is about -75dBm
and
> noise varys from -82dBm to -90dBm
> 
> Dan Metcalf
> Wireless Broadband Systems
> http://www.wbsysnet.com/
> 877-685-0578
> dan.metcalf@wbsysnet.com
> 
> 
> > -----Original Message-----
> > From: karlnet-admin@WISPNotes.com
[mailto:karlnet-admin@WISPNotes.com]
> On
> > Behalf Of Kevin Knuth
> > Sent: Sunday, December 15, 2002 4:54 PM
> > To: karlnet@WISPNotes.com
> > Subject: RE: [Karlnet] Strange retransmit problem
> >
> > Chris,
> >
> > I agree with your point about not needing to fix a constant
situation.
> >
> > I would be much more interested in Signal level in dBm as opposed to
> > signal
> > to noise ratio.  And since the interference seems to be intermittent
I
> am
> > wondering why you are having problems.  Have you noticed (I am too
> lazy on
> > a
> > Sunday to go back and read this whole thread!) any issues on the
> ETHERNET
> > side of the unit?  AND, this particular client, any idea what kind
of
> data
> > he is trying to move when the problems occur?  And do you use
> throttling?
> >
> > Just curious.....I will have to have tech support work with you to
> really
> > try to find a solution.
> >
> > Kevin
> >
> >
> >
> > -----Original Message-----
> > From: karlnet-admin@WISPNotes.com
> [mailto:karlnet-admin@WISPNotes.com]On
> > Behalf Of Chris Conn
> > Sent: Sunday, December 15, 2002 4:12 PM
> > To: karlnet@WISPNotes.com
> > Subject: RE: [Karlnet] Strange retransmit problem
> >
> >
> > On Sun, 15 Dec 2002, Kevin Knuth wrote:
> >
> > > The TurboCell algorithm is pretty complex, so I am not sure of the
> > "delay
> > or
> > > timeout" before it moves on.
> > >
> > > However, you must realize the forcing TurboCell to "not wait" has
an
> > effect
> > > too!  I just wonder if the benefit outweighs the other possible
> effects
> > on
> > > performance.  A question that WISPs have to ask themselves is how
> many
> > links
> > > do they have that have less then great signal?  Most WISPs run
with
> very
> > > marginal links. If we tell TurboCell to ignore those, they may as
> well
> > close
> > > up shop!
> >
> > Hello,
> >
> > As I said, this problem only occurs for a few minutes, where a
single
> > satellite is hogging all resources.  No other satellites get polled.
> I
> > don't believe that this "fix" would necessarily have to take into
> account
> > a constant situation but rather a particular case where the
satellite
> is
> > obviously not sending something back to the base and it gets stuck.
I
> > don't see how it can be considered normal that a satellite can cause
> an
> > entire multipoint setup to become unuseable for a number of minutes.
> >
> > As for marginal, during one of these "problems", I had 20db+ SNR on
> either
> > the base or the satellite, therefore I doubt it is a noise issue.
And
> the
> > satellites in question have less than 2% retransmits at any given
time
> > other than these particular incidents where we have several thousand
%
> of
> > retransmit.
> >
> > Chris
> >
> >
> > _______________________________________________
> > Karlnet mailing list
> > Karlnet@WISPNotes.com
> > http://lists.wispnotes.com/mailman/listinfo/karlnet
> >
> > _______________________________________________
> > Karlnet mailing list
> > Karlnet@WISPNotes.com
> > http://lists.wispnotes.com/mailman/listinfo/karlnet
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