[mrtg] Re: ping-probe questions

Peter W. Osel pwo at Infineon.COM
Thu Jun 27 22:25:17 MEST 2002

>>>>> 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?


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

also, you might want to check out Tobi's excellent smokeping tools (The
mrtg of latency monitoring).

Hope this helps


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

More information about the mrtg mailing list