R: R: Help on alert ping

[Marco Borsani]

I tried to set the -l flag since 255, but nothing happened. I saw that,
often, the hosts where check_icmp have this problem are unreachble with
traceroute command, but still answer to ping command (and check_ping
plugin).
My target should be to find a good alternative to the check_ping because
some time it looks like heavy and send wrong notifications (notify an host
down when it is up).

Marco


-}
-}You can try using the -l flag to set ttl to a higher value on outgoing
-}packets. The ttl decides the max number of hops/seconds a packet is
-}allowed to live. The value reached first results in a ttl exceeded. "in
-}transit" means the target host is more than outgoing_ttl hops away. "in
-}packet reassembly" means fragments of the packet didn't arrive a maximum
-}of remaining_ttl seconds after the IP-header on some router along the
-}way. I've never seen the "in packet reassembly" happen on a modern
-}network (not without making it, anyway).
-}
-}Also, check_icmp doesn't auto-increment it's ttl as normal ping may or
-}may not do (system dependent). This is intentional, since it means it
-}can be used to monitor the number of hops to a host and thus see if the
-}normal or failover route is being used.
-}
-}--
-}Andreas Ericsson                   andreas.ericsson at op5.se
-}OP5 AB                             www.op5.se
-}Lead Developer
-}
-}
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::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. 
::: Messages without supporting info will risk being sent to /dev/null