Provided by: mtr_0.72-2ubuntu1_i386 bug


       mtr - a network diagnostic tool


       mtr      [-hvrctglspni46]      [--help]      [--version]     [--report]
       [--report-cycles COUNT] [--curses] [--split] [--raw] [--no-dns] [--gtk]
       [--address IP.ADD.RE.SS]   [--interval SECONDS]   [--psize BYTES  |  -s


       mtr combines the functionality of the traceroute and ping programs in a
       single network diagnostic tool.

       As  mtr starts, it investigates the network connection between the host
       mtr runs on and HOSTNAME.  by sending packets with purposly  low  TTLs.
       It  continues to send packets with low TTL, noting the response time of
       the intervening  routers.   This  allows  mtr  to  print  the  response
       percentage  and  response  times  of the internet route to HOSTNAME.  A
       sudden increase in packetloss or response time is often  an  indication
       of a bad (or simply overloaded) link.



              Print the summary of command line argument options.


              Print the installed version of mtr.


              This  option  puts mtr into report mode.  When in this mode, mtr
              will run for the number of cycles specified by  the  -c  option,
              and then print statistics and exit.

              This  mode  is  useful  for  generating statistics about network
              quality.  Note that each running instance  of  mtr  generates  a
              significant amount of network traffic.  Using mtr to measure the
              quality  of  your  network  may  result  in  decreased   network

       -c COUNT

       --report-cycles COUNT
              Use  this  option  to  set the number of pings sent to determine
              both the machines on the network and the  reliability  of  those
              machines.  Each cycle lasts one second.

       -s BYTES

       --psize BYTES

              These  options  or a trailing PACKETSIZE on the commandline sets
              the packet size used for probing.  It is in bytes  inclusive  IP
              and ICMP headers

              If  set  to  a  negative  number,  every  iteration  will  use a
              different, random packetsize upto that number.


              Use this option to force mtr to use the  curses  based  terminal
              interface (if available).


              Use  this  option to force mtr to display numeric IP numbers and
              not try to resolve the host names.


              Use this option to force mtr to use the GTK+  based  X11  window
              interface  (if available).  GTK+ must have been available on the
              system when mtr was built for this to work.  See  the  GTK+  web
              page  at  for  more  information about


              Use this option to set mtr to spit out a format that is suitable
              for a split-user interface.


              Use  this  option to tell mtr to use the raw output format. This
              format is better suited for archival of the measurement results.
              It could be parsed to be presented into any of the other display

       -a IP.ADD.RE.SS

       --address IP.ADD.RE.SS
              Use this option to bind outgoing  packets’  socket  to  specific
              interface,  so  that  any  packet  will  be  sent  through  this
              interface. NOTE that this option doesn’t apply to  DNS  requests
              (which could be and could not be what you want).

       -i SECONDS

       --interval SECONDS
              Use  this  option  to  specify  the  positive  number of seconds
              between  ICMP  ECHO  requests.   The  default  value  for   this
              parameter is one second.

              Use IPv4 only.

              Use IPv6 only.


       Some  modern routers give a lower priority to ICMP ECHO packets than to
       other network traffic.  Consequently, the reliability of these  routers
       reported by mtr will be significantly lower than the actual reliability
       of these routers.


       For   the   latest   version,    see    the    mtr    web    page    at

       Subscribe  to  the mtr mailing list.  All mtr related announcements are
       posted  to  the  mtr  mailing  list.   To  subscribe,  send  email   to  with  subscribe mtr  in  the  body of the
       message.   To  send  a  message  to   the   mailing   list,   mail   to

       Bug  reports  and  feature  requests  should be sent to the mtr mailing


       traceroute(8), ping(8).