False positive? (CRITICAL - Time to live exceeded)
Andreas Ericsson
ae at op5.se
Fri Oct 28 15:26:11 CEST 2005
Jason Byrns wrote:
> Good morning, everyone!
>
> We've been using Nagios for awhile, and I'm migrating to a newer server.
> The new server is showing a false positive for just one host. Anyone
> have suggestions on solving this problem?
>
> The Nagios web interface shows this single host with a critical alert:
> "Time to live exceeded (ip.add.re.ss)" It's being checked with a
> "check-host-alive" command, which is defined as:
>
You can try check_icmp instead. It will tell you why the ttl count was
exceeded (it can be done either in transmit or in packet re-assembly).
> $USER1$/check_ping -H $HOSTADDRESS$ -w 3000.0,80% -c 5000.0,100%
>
> This works just fine
Define "fine". Does it print exactly one line of output? Does it exit
with the expected exit-code?
--
Andreas Ericsson andreas.ericsson at op5.se
OP5 AB www.op5.se
Tel: +46 8-230225 Fax: +46 8-230231
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