[mrtg] Re: ping-probe questions

[Peter W. Osel]

>>>>> On Thu, Jun 27, 2002 at 11:44:06AM -0700, "" == John Oliver <joliver at john-oliver.net> wrote:
> I'm using the latest version of ping-probe to monitor several T1s.  All
> of the graphs always show a certain amount of packet loss, which simply
> isn't correct... if it were, the phones would be ringing off the hook
> over here! :-)  What's the story with that?
> Also, is there a version of ping-probe which can/will just graph
> latency?

John,

I am a bit puzzled, the default for mrtg-ping-probe is to just look at
the latency.  Keep in mind that ICMP gets delayed and/or dropped as one
of the first packets if the router is congested; so there could be an
ICMP packet loss without tcp traffic being affected too much?

Did you try to run a ping manually and see if the pring reports packet
loss?

also, you might want to check out Tobi's excellent smokeping tools (The
mrtg of latency monitoring).
http://people.ee.ethz.ch/~oetiker/webtools/smokeping

Hope this helps

	--pwo


--
Peter W. Osel                   Sr. Network & Systems Manager
Infineon Technologies           Email: pwo at Infineon.COM
North America Corp.             Phone: +1 (408) 501 6321
1730 North First Street         Fax:   +1 (408) 501 2410
San Jose, CA 95112, USA         WWW:   http://pwo.de/

pgp key fingerprint = 79 2D DD 49 C0 AA D8 CF  2C F9 A5 6A BA 37 0E 28

--
Unsubscribe mailto:mrtg-request at list.ee.ethz.ch?subject=unsubscribe
Archive     http://www.ee.ethz.ch/~slist/mrtg
FAQ         http://faq.mrtg.org    Homepage     http://www.mrtg.org
WebAdmin    http://www.ee.ethz.ch/~slist/lsg2.cgi