[smokeping-users] Re[2]: no data for one host

[Dobersberger Dieter]

Saturday, January 3, 2004, 2:31:30 AM, Arnold Nipper wrote:
>> 1073077500: nan 2.0000000000e+01 nan nan nan nan nan nan nan nan nan
>> nan nan nan nan nan nan nan nan nan nan nan nan

> There really is no data (nan means "not a number") in the RRD. IMHO
> that looks like a connectivity problem to <<suspicious_host>>. Are you
> able to run a traceroute every 5min. when SmokePing is probing the host?

traceroute is blocked by a firewall guarding the <<suspicious_host>>.
But I am able to ping it from the command line. I let the ping run for
over 30 minutes and not a single packet was lost. I tried fping and
the "normal" ping that came with my Redhat 9. I also tried larger icmp
packets which worked too:

$ fping -b 1500 -c 5 10.60.2.20
10.60.2.20 : [0], 1528 bytes, 121 ms (121 avg, 0% loss)
10.60.2.20 : [1], 1528 bytes, 120 ms (121 avg, 0% loss)
10.60.2.20 : [2], 1528 bytes, 121 ms (121 avg, 0% loss)
10.60.2.20 : [3], 1528 bytes, 120 ms (121 avg, 0% loss)
10.60.2.20 : [4], 1528 bytes, 142 ms (125 avg, 0% loss)
10.60.2.20 : xmt/rcv/%loss = 5/5/0%, min/avg/max = 120/125/142

Is smokeping using any special flags for fping that might create icmp
packets that are dropped by the firewall in front of
<<suspicious_host>> ?

Dieter

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