I don't know, it's weird, I've sat down in a bench test environment with
the brand new new flash base and connected a KN-105 to it with almost
perfect stats (way under 5% retrans) and gotten 4 to 4.5mbit in either the
ping fill or an actual HTTP or FTP transfer. I can't really do better than
3.5mbit to a KN-105 client that's in the field. Bridging mode, no MAC
filtering, no bandwidth limiting on base or sat side, nothing weird. The 4
to 4.5mbit maximum I've seen just doesn't impress me and I've never seen
anything better in the field or on the bench. On the bench I tried with
Prism on both ends, Hermes I on both ends, mixing them up, etc. with no
change.
Sure, it works much better than non-turbocell 802.11b when clients
transmit to base, certainly not arguing that, but I have many alternatives
with far fewer problems. You've seen what I've gone through and you can
understand why I would be going a different direction after 6+ months of
unhappy customers and ineffective troubleshooting. I've been a WISP since
1999 before anybody even came up with the term WISP and I've never had
problems like this before with any equipment I've used.
The AP is set for 11mbit, although I have also for a day tested things at
5.5mbit with no difference in the interface hang or the other strange
problem I described.
As I described before, one client who was categorized as "flaky" had
everything perfect, no noise whatsoever, retransmits and signal strength
good, clear LOS both fresnel and visual. About the only thing I didn't do
is replace their KN-50 with a KN-10x. Some other client with high retrans
gets going and this one would lose the ability to pass traffic while many
others would just see the normal little jump in latency. The KN-50, the
antenna and the radio card were all replaced, the channel has been
changed, nothing did the trick for this one or any of the others in
similar situations. I should try a KN-10x at some point to see if it helps
(i.e. to rule out software problem with KN-50.) I still have some clients
who are living with the problem so I still have the chance to try that.
-T
Dan Metcalf wrote:
Travis,
I would think that there is some other issue w/ these flaky clients,
except for this ap lockup bug, karlnet has worked very well for us and
it provides MORE bandwidth than any 802.11b solution I've tried, and
when you have clients uploading traffic to the AP/Internet, 802.11b
drops performance, while karlnet software continues to balance it all
out....
If your AP's are set for 11Mbps make sure that those links are solid and
watch out for multi-path or poor links, if you have a poor link (what
you called flaky) most likely due to poor RF, multipath, or fresnel
issues
Dan
-----Original Message-----
From: karlnet-bounces@WISPNotes.com
[mailto:karlnet-bounces@WISPNotes.com] On
Behalf Of Travis Mikalson
Sent: Thursday, July 15, 2004 12:05 PM
To: Karlnet Mailing List
Subject: Re: [Karlnet] AP LOCK up/ won't pass ip traffic but link test
works
I've also been experiencing a strange problem where these same clients
with poor signals/retrans (couple of long range links, 6 - 10 miles
plus a
couple shorter-range clients with not enough height) when they are
passing
any significant traffic at all will completely cut off service for
SOME
other clients on the AP.
It seems like I have "resistant" and "flaky" clients. The resistant
ones
will stay up and pass traffic fine with just a small increase in
latency
like 30ms instead of 6 - 8, everything's good, everything's normal.
The
flaky ones under no load will be just fine and normal, throughput's
good,
latency is good right up until one of those clients with poor
signal/retrans stats starts passing some traffic. The "flaky" clients
will
then pretty much stop passing any traffic at all, although wireless
link
test still works. I've already had to replace a couple of clients'
wireless links with DSL because of this, that's pretty embarassing.
The clients in the "flaky" category have good signals, some are KN-50
with
1.20 and some are KN-50 with 1.00, there seems to be no rhyme or
reason at
all to them acting like that. It's not their signal strength or
retrans or
their particular software version. You can replace their KN-50s +
antennas, try 1.00, try 1.20, no difference. It's like the particular
locations themselves are cursed somehow. One "flaky" client I just
replaced with DSL who was losing connectivity for minutes at a time
you
could see the tower with your naked eyes less than 1.5 miles away and
had
the most perfect link you've ever seen.
After dealing with show-stopper bugs like this and karlnet's best
802.11b-based offerings under optimal conditions performing at roughly
2/3
the speed of any modern cheap 802.11b AP even in indoor bench tests
between KN-200/KN-100, we're phasing karlnet out as much as we can. It
just doesn't work well enough to keep me or my clients happy and
Karlnet
support tries and would keep trying until end of days, but they mostly
just end up wasting my time and money. They fixed all of my KN-50s
with
1.00 that were rebooting over and over and over again every 15 - 120
seconds by providing me with 1.20, but that's the only success I've
ever
had fixing a problem. As others have mentioned, clients get frustrated
and
impatient when this stuff happens day in and day out and have to find
alternate solutions.
They had me replace my KN-200 base with a flash base which was no fun
to
do since it was the third motherboard until I got it to work with
their
software and it had no effect on anything at all. Same interface hangs
due
to bugs in their software, not even any increase
performance/throughput as
karlnet and I expected with a beefier CPU under it.
It's been a nightmare, seems like I made a poor choice in karlnet,
although the CPE price was right and it provided the range I need.
We're
phasing Karlnet out as much as we can.
-T
Caleb Carroll wrote:
Who is still experiencing this "feature" with v4.45 firmware?
*********** REPLY SEPARATOR ***********
On 2004-07-14 at 3:00 PM Dan Metcalf wrote:
Bob,
I agree, if karlnet can't fix this I"ll have no choice... its very
frustrating when 30+ clients call me up (after I received the
30+pages
that they down) and when I do the wireless link test everything is
FINE
Dan
--
TerraNovaNet Internet Services - Key Largo, FL
Voice: (305)453-4011 x101 Fax: (305)451-5991
http://www.terranova.net/
----------------------------------------------
Life's not fair, but the root password helps.
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--
TerraNovaNet Internet Services - Key Largo, FL
Voice: (305)453-4011 x101 Fax: (305)451-5991
http://www.terranova.net/
----------------------------------------------
Life's not fair, but the root password helps.
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