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mtr (8)
  • >> mtr (8) ( Linux man: Команды системного администрирования )
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    NAME

    mtr - a network diagnostic tool
    

     

    SYNOPSIS

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

     

    DESCRIPTION

    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.

     

    OPTIONS

    -h
    --help

    Print the summary of command line argument options.

    -v
    --version

    Print the installed version of mtr.

    -r
    --report

    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 performance.

    -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
    PACKETSIZE
    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
    -t
    --curses

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

    -n
    --no-dns

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

    -g
    --gtk

    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 http://www.gimp.org/gtk/ for more information about GTK+.

    -p
    --split

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

    -l
    --raw

    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 methods.

    -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.

    -4

    Use IPv4 only.

    -6

    Use IPv6 only.

     

    BUGS

    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.

     

    CONTACT INFORMATION

    For the latest version, see the mtr web page at http://www.bitwizard.nl/mtr/.

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

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

     

    SEE ALSO

    traceroute(8), ping(8).


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    OPTIONS
    BUGS
    CONTACT INFORMATION
    SEE ALSO


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