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Re: [Karlnet] Strange ping loss

To: "Karlnet Mailing List" <karlnet@wispnotes.com>
Subject: Re: [Karlnet] Strange ping loss
From: "Norm Young" <lists@applegatebroadband.net>
Reply-to: Norm Young <npyoung@applegatebroadband.net>, Karlnet Mailing List<karlnet@WISPNotes.com>
Date: Wed, 10 Sep 2003 08:24:55 -0700
List-post: <mailto:karlnet@WISPNotes.com>
Hi Bob,

I think that I may be seeing the same thing.   I noticed that sometime this
summer as I added clients to our WIPOP the jitter from the clients to the
AP/NOC really went bad (as previously mentioned) AND I'm seeing timeouts on
my SNMP traffic grapher occasionally, and if I do a ping from the clients to
the NOC.  I'm going to try and replace the AP1000 (relegating it to
backhaul) with a WPG01 (and cross my fingers and hope I don't have lockup
problems), while splitting the  clients across two radios/antennas and see
what that does.   The amount of loading (according to what Karlnet states is
possible) on this base is moderate, say 20 clients!   I've already tried
updating firmware, trying new radios at the base, all without any change.

Norm

----- Original Message ----- 
From: "Bob Hrbek" <bhrbek@jagwireless.net>
To: "Karlnet Mailing List" <karlnet@WISPNotes.com>
Sent: Wednesday, September 10, 2003 6:43 AM
Subject: [Karlnet] Strange ping loss


> I have an Orinoco COR v4.15 with about 14 RG-1000 clients and 1 AP-1000
that
> is serving as a POP and backhaul for the small pop.   In all, about 35
> clients are going through this AP, in on way or another.
>
> I have a monitoring system that pings all the clients every 2 minutes.
> (Because of this problem, I stuck a monitoring box at the bottom of this
> tower)  It keeps reporting the clients as un-reachable.  I've not
contacted
> any of them but had one complaint off the remote AP-1000  Satellite/Base.
>
> My testing:
>
> I did a 1000 byte ping to one client.  I left it running all night.
>
> --- 10.100.105.16 ping statistics ---
> 43477 packets transmitted, 43474 received, 0% loss, time 43582095ms
> rtt min/avg/max/mdev = 9.543/15.222/311.773/11.513 ms
>
>
> Out of 43477, I lost 3 packets!!!!!  My max ping time was 311ms.  The
client
> I was pinging was the only one that I never received an outage
notification
> on last night.  Previously I was getting 20 or more per day.
>
> The stats on the AP don't look wonderful.  Re-transmits are about 10% for
> the clients that I get the most outages reports on.  Overall in FCS errors
> are only .3% (yes that is point 3%) of the total inbound packets. I
believe
> I have some RF issues at this site but WHY, if I ping a client constantly,
> will I be successful 43,374 times out of 43,477 and still drop so many
> monitoring pings when I'm not constantly pinging him?  I even disabled
> polling on this ap and it didn't change anything but lower the ping times.
>
> If I didn't know better, I'd say I had a duplicate IP address but it is
> affecting about 10 of the RG"s on a regular basis.  No dupes out there.  I
> checked.
>
> Any thoughts?
>
> -Bob
>
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