(note: we'd really a better path delay characterizer)

syntax

mapper -src  ipaddr -dest dstipaddr1  \
	-dest dstipaddr2 ... -dest dstipaddrn  \
        -mail email address -mailinterval n (seconds)

sends statistics files to email address every n seconds.

source code: Mapper.tar.gz

description

a rough approximation of path delay characteristics, as illustrated in our end-to-end visualization (AllsWell/).

Mapper's data collection progresses in two phases: it first gathers topology data incrementally, fanning out from the source host toward each of the destinations on the command line, adding each new link to its map structure. As it builds the toplogy map, it keeps one echo request in flight to a randomly chosen hop in the current link set. You can then use several of the CAIDA network drawing tools (http://www.nlanr.net/Ndtools/) to visualize results with anemone (anemone.readme.html).

For example, you can convert the IP addresses to hostnames with

 tail +9 mapper-output-file |  \
 	resolv -host > mapper-output-file.r 

and then use

colorize -param variation 0.0 500.0 < mapper-output-file.r | 
	anemone -x display:0 -ndt 

Please send any comments, problems, suggestions, changes.