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MTR !!!MTR NAME SYNOPSIS DESCRIPTION OPTIONS BUGS CONTACT INFORMATION SEE ALSO ---- !!NAME mtr - a network diagnostic tool !!SYNOPSIS __mtr__ [[__-hvrctglsni__] [[__--help__] [[__--version__] [[__--report__] [[__--report-cycles COUNT__] [[__--curses__] [[__--split__] [[__--raw__] [[__--no-dns__] [[__--gtk__] [[__--address IP.ADD.RE.SS__] [[__--interval SECONDS__] [[__--psize BYTES | -p 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__. After it determines the address of each network hop between the machines, it sends a sequence ICMP ECHO requests to each one to determine the quality of the link to each machine. As it does this, it prints running statistics about each machine. !!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. This option is only useful with the __-r__ option. __-p 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+. __-s__ __--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. !!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). ----
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