NAME

       Blaeu - blaeu-reach : (test reachability of the target, like ping)

SYNOPSIS

       blaeu-reach target-IP-address ...

DESCRIPTION

   General options are:
       --verbose or -v : makes the program more talkative

       --help or -h : this message

       --displayprobes or -o : display the probes numbers (WARNING: big lists)

       --country=2LETTERSCODE  or  -c  2LETTERSCODE  :  limits  the  measurements  to one country
              (default is world-wide)

       --area=AREACODE or -a AREACODE : limits the measurements to one area such as North-Central
              (default is world-wide)

       --asn=ASnumber or -n ASnumber : limits the measurements to one AS (default is all ASes)

       --prefix=IPprefix  or  -f  IPprefix : limits the measurements to one IP prefix (default is
              all prefixes) WARNING: it must be an *exact* prefix in the global routing table

       --probes=N or -s N : selects the probes by giving explicit ID (one ID or a comma-separated
              list)

       --requested=N or -r N : requests N probes (default is 5)

       --percentage=X  or -p X : stops the program as soon as X % of the probes reported a result
              (default is 90 %)

       --measurement-ID=N or -m N : do not start a measurement, just analyze a former one

       --old_measurement MSMID or -g MSMID : uses the probes of measurement MSMID

       --include TAGS or -i TAGS  :  limits  the  measurements  to  probes  with  these  tags  (a
              comma-separated list)

       --exclude  TAGS  or  -e  TAGS  :  excludes from measurements the probes with these tags (a
              comma-separated list)

       --port=N or -t N : destination port for TCP (default is 80)

       --size=N or -z N : number of bytes in the packet (default is 64 bytes)

       --ipv4 or -4 : uses IPv4 (default is IPv6, except if the parameter  or  option  is  an  IP
              address, then it is automatically found)

       --spread or -w : spreads the tests (add a delay before the tests)

       --private : makes the measurement private

       --machinereadable  or  -b  : machine-readable output, to be consumed by tools like grep or
              cut

   Also:
       --tests=N or -d N : send N ICMP packets from each probe (default is 3)

       --by_probe : count the percentage of success by probe, not by test (useless if --tests=1)

SEE ALSO

       Other Blaeu tools

       blaeu-cert : (display the PKIX certificate)

       blaeu-reach : (test reachability of the target, like ping)

       blaeu-resolve : (use the DNS to resolve the name)

       blaeu-traceroute : (like traceroute)