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MAP-MBONE(8)		     System Manager's Manual		    MAP-MBONE(8)

NAME
     map-mbone -- Multicast connection mapper

SYNOPSIS
     map-mbone [-fgn] [-d level] [-r count] [-t seconds] [starting_router]

DESCRIPTION
     map-mbone attempts to display all multicast routers that are reachable from
     the  multicast  router  starting_router.	If  not specified on the command
     line, starting_router is "localhost".  map-mbone must be run as root.

     map-mbone sends an ASK_NEIGHBORS IGMP message to  starting_router.   A  re-
     sponse contains the multicast version number of starting_router and the ad-
     dresses of all its neighboring multicast routers.	If the multicast version
     number  is  recent,  then map-mbone requests additional information such as
     metrics, thresholds, and flags.

     If a recursive search has been requested (see -f),  map-mbone  repeats  the
     above  operation for each new multicast router in the list of neighbors and
     continues the process until no new multicast routers are reported.

     The options are as follows:

     -d level	 Sets the debug level to level.  When the debug level is greater
		 than 0, additional debugging messages are  printed  to  stderr.
		 Regardless  of  the debug level, an error condition will always
		 write an error message and will cause map-mbone  to  terminate.
		 Non-zero debug levels are:

		       1.   Print packet warnings, plus level 0 messages.

		       2.   Print  notifications  of down networks, plus level 1
			    messages.

		       3.   Print notifications of  all  packet  timeouts,  plus
			    level 2 messages.

		 Default is 0.

     -f 	 Causes a recursive (flooding) search.	If no starting_router is
		 specified, a recursive search is always performed.

     -g 	 Sets graphing format to GraphEd format.

     -n 	 Disables DNS lookup for the names of the multicast routers.

     -r count	 Sets the neighbor query retry limit to count.	Default is 1.

     -t seconds  Sets  the  number of seconds to wait for a neighbor query reply
		 before retrying to seconds.  Default is 2.

SEE ALSO
     mrinfo(8), mrouted(8), mtrace(8)

AUTHORS
     Pavel Curtis

FreeBSD ports 15.quarterly	  May 31, 2007			    MAP-MBONE(8)

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