ARP can't be the problem - ARP will cache the result for 2 minutes and clear it if unused. If the result is used and is valid again within the 2 minutes, it is cached for 10 minutes. Hobbit polls every 30-45 seconds so ARP is not a problem.
<br><br>Having switch from using hobbitping to fping I think the graphs are going to look far superior now. Things on the same switch are no longer 30ms but 1ms =)<br><br>I now understand why there are warnings not to use hobbitping, but I don't understand how the command line is getting such normal results while the graphs are getting such high results. Does anyone know why this is?
<br><br>Josh<br><br><div><span class="gmail_quote">On 11/22/07, <b class="gmail_sendername">Hubbard, Greg L</b> <<a href="mailto:greg.hubbard@eds.com">greg.hubbard@eds.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">Don't forget the ARP protocol -- if a destination is not in
the local system's ARP cache, the lower layer code in the IP stack discards the
first packet and generates an ARP broadcast. The assumption (I guess) is
that the discarded packet will be retransmitted. You might look for the
"knobs" on fping to control timeouts and retry counts.</font></span></div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2"></font></span> </div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">GLH</font></span></div><br>
<blockquote style="margin-right: 0px;">
<div dir="ltr" align="left" lang="en-us">
<hr>
<font face="Tahoma" size="2"><b>From:</b> Josh Luthman
[mailto:<a href="mailto:josh@imaginenetworksllc.com" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">josh@imaginenetworksllc.com</a>] <br><b>Sent:</b> Wednesday, November 21,
2007 1:13 AM<br><b>To:</b> <a href="mailto:hobbit@hswn.dk" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">hobbit@hswn.dk</a><br><b>Subject:</b> Re: RE: Re:
[hobbit] Hobbit CONN questions<br></font><br></div><div><span class="e" id="q_11667a99a737b961_1">
<div></div>Concerning fping options, I have some RRD graphs that show enormous
pings to some of our customer's (upwards of 800ms) because as the radio
doesn't pass any traffic it sits there and when someone first looks for it, it
acts kind of dumb. <br><br>What delegates how often the FPING command is
issued? I'm not looking for the arguments for fping itself, but rather
how hobbitd kicks fping into gear.<br><br>I would like to increase the rate of
the pings and see if that helps. I'm running a continuous ping over
night to see if that changes the graph or if it really does spike to that
outrageous height. <br><br>Josh<br><br>
<div><span class="gmail_quote">On 11/9/07, <b class="gmail_sendername"><a href="mailto:johan.boye@latecoere.fr" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">johan.boye@latecoere.fr</a></b> <
<a href="mailto:johan.boye@latecoere.fr" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">johan.boye@latecoere.fr </a>>
wrote:</span>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">>
-----Message d'origine-----<br>> De : Henrik Stoerner [mailto: <a href="mailto:henrik@hswn.dk" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">henrik@hswn.dk</a>]<br>> Envoyé : vendredi 9
novembre 2007 08:23<br>> À : <a href="mailto:hobbit@hswn.dk" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">hobbit@hswn.dk</a><br>> Objet : Re: RE: Re:
[hobbit] Hobbit CONN questions <br>><br>> On Fri, Nov 09, 2007 at
08:14:32AM +0100,<br>> <a href="mailto:johan.boye@latecoere.fr" target="_blank" onclick="return top.js.OpenExtLink(window,event,this)">johan.boye@latecoere.fr</a>
wrote:<br>> > I'm just wondering what triggers in the Hobbit code is
used<br>> to make a RED ping status :<br>> > - after
just one no echo-reply each 5min ?<br>> > - after a couple
of no echo-reply ? How much ?<br>> > - What is the timeout
used to declare the host unreachable ? <br>><br>> It goes red when the
ping utility that is used (fping or hobbitping)<br>> says that the host
did not respond. How many pings are sent<br>> and what the<br>>
timeouts are is decided by the ping tool; see their man-pages for <br>>
details. You can tune this through commandline options for the ping<br>>
tool, these go into the FPINGCMD setting in
hobbitserver.cfg<br>><br>><br>> Henrik<br><br>Got it, options must
be put in the hobbitserver.cfg . Thanks for the info!<br><br>"Les
informations contenues dans ce message électronique peuvent être de nature
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<br><br clear="all"><br>-- <br>Josh Luthman<br>Office: 937-552-2340<br>Direct:
937-552-2343<br>1100 Wayne St<br>Suite 1337<br>Troy, OH 45373<br><br>Those who
don't understand UNIX are condemned to reinvent it, poorly.<br>--- Henry
Spencer </span></div></blockquote></div>
</blockquote></div><br><br clear="all"><br>-- <br>Josh Luthman<br>Office: 937-552-2340<br>Direct: 937-552-2343<br>1100 Wayne St<br>Suite 1337<br>Troy, OH 45373<br><br>Those who don't understand UNIX are condemned to reinvent it, poorly.
<br>--- Henry Spencer