http://en.wikipedia.org/wiki/Mtr_(My_traceroute)

mtr or My traceroute is a computer program which combines the functionality of the traceroute and ping programs in a single network diagnostic tool.

挺方便的小工具
http://www.bitwizard.nl/mtr/


FreeBSD 的 Ports裡面有收

http://www.freebsd.org/cgi/url.cgi?ports/net/mtr/pkg-descr


這邊有一些 screenshots，大家可以看看
http://www.bitwizard.nl/mtr/screenshots.html