I now see this after upgrading one of our wavepoint II (bnc connector)
to v4.31, on its "backhaul" link
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: Wednesday, December 11, 2002 7:34 PM
> To: karlnet@WISPNotes.com
> Subject: RE: [Karlnet] Strange retransmit problem
>
> Chris,
>
> Who have you been dealing with in our office?
>
> Kevin
> ____________________________________
> Kevin R. Knuth
> Business Development Manager
> North America
> Corporate Office: 614-822-5275 x130
> Home Office: 260-424-9690
> Cell Phone: 260-402-6086
> Email: kknuth@karlnet.com
> www.karlnet.com
> ____________________________________
>
> This message is intended only for the use of the Addressee and may
contain
> information that is CONFIDENTIAL. If you are not the intended
recipient,
> you are hereby notified that any dissemination of this communication
is
> strictly prohibited. If you have received this communication in
error,
> please notify us immediately and erase all copies of the message and
its
> attachments. Thank you.
>
> -----Original Message-----
> From: karlnet-admin@WISPNotes.com
[mailto:karlnet-admin@WISPNotes.com]On
> Behalf Of Chris Conn
> Sent: Wednesday, December 11, 2002 5:37 PM
> To: karlnet@WISPNotes.com
> Subject: [Karlnet] Strange retransmit problem
>
>
> Hello to all,
>
>
> I have been having a strange problem for quite a while. I have spoken
> to Karlnet about this and they told me it was a rare occurrence and
> _maybe_ one other customer was seeing this but all data was
inconclusive.
>
> The problem:
>
> A situation can arise intermittently (once a week, once a month, three
> times a day, no real pattern) where in a multi-point antenna, the base
> station will enter a mode where it is retransmitting thousands and
> thousands of packets to a satellite. The transmit counter does not
> increase, only the re-transmit counter, and by the thousands at a
time.
> Upon looking at the Turbocell station entries, we notice that the
> transmit and retransmit counters seem to have reset back to zero for
the
> satellite to which it is retransmitting, and you can watch the
> re-transmit counters increase at an alarming rate. All other
satellites
> are still visible, however no TCP/IP data can pass to any satellite,
> including the one to which the retransmits are occurring. Therefore,
> the whole system is no longer useable. The amount of throughput
before
> or after can be high or low, it does not matter. This will happen day
> or night, with or without customer usage. After a few minutes (2 to
5),
> the whole thing comes back online and data starts to pass again. It
> would seem that the base station jams on one satellite which no longer
> can acknowledge a transmission for some reason.
>
> We have tried changing all hardware, using flashroms, AP1000s, new
> antennas. In no case are we using amplification of any kind. We also
> tried replacing the radio card in the base to a PRISM 2.5 200mW, and
> were initially happy however the problem eventually happened therefore
> it is not a radio firmware issue (since it is not Orinocco specific),
> and looks to be a software issue.
>
> The Workaround:
>
> We have found that setting the base from 11Mbps to 5.5Mbps will fix
the
> problem in 3 out of the 4 setups that are doing this. However, in one
> case we had to set a customer satellite all the way down to 1Mb in
order
> to cease totally any form of this problem. But, we obviously take a
> performance drop in the process.
>
> Other info:
>
> All bases are running 4.31, and the clients are running a mix of 3.88
> and 4.02. I assume however that it has to do with the base since it
is
> my understanding that polling should occur many times per second to
each
> satellite and during these periods, several minutes go by before any
> satellite is polled other than the one the base seems to get stuck on.
>
> Any ideas?
>
> Thanks,
>
> 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
> ---
> [This E-mail scanned for viruses by Declude Virus]
---
[This E-mail scanned for viruses by Declude Virus]
|