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

     map-mbone -- multicast connection mapper

     map-mbone [-d debug_level]	[-f] [-g] [-n] [-r retry_count]
	       [-t timeout_count] [starting_router]

     The map-mbone utility attempts to display all multicast routers that are
     reachable from the	multicast starting_router.  If not specified on	the
     command line, the default multicast starting_router is the	localhost.

     The map-mbone utility traverses neighboring multicast routers by sending
     the ASK_NEIGHBORS IGMP message to the multicast starting_router.  If this
     multicast router responds,	the version number and a list of their neigh-
     boring multicast router addresses is part of that response.  If the re-
     sponding router has recent	multicast version number, then map-mbone re-
     quests additional information such	as metrics, thresholds,	and flags from
     the multicast router.  For	each new occurrence of neighboring multicast
     router in the reply and provided the flooding option has been selected,
     then map-mbone asks each of this multicast	router for a list of neigh-
     bors.  This search	for unique routers will	continue until no new neigh-
     boring multicast routers are reported.

     The following options are available:

     -d	     Set the debug level.  When	the debug level	is greater than	the
	     default value of 0, addition debugging messages are printed.  Re-
	     gardless of the debug level, an error condition, will always
	     write an error message and	will cause map-mbone to	terminate.
	     Non-zero debug levels have	the following effects:

	     level 1
		     packet warnings are printed to stderr.

	     level 2
		     all level 1 messages plus notifications down networks are
		     printed to	stderr.

	     level 3
		     all level 2 messages plus notifications of	all packet
		     timeouts are printed to stderr.

     -f	     Set flooding option.  Flooding allows the recursive search	of
	     neighboring multicast routers and is enable by default when
	     starting_router is	not used.

     -g	     Set graphing in GraphEd format.

     -n	     Disable the DNS lookup for	the multicast routers names.

     -r	retry_count
	     Set the neighbor query retry limit.  Default is 1 retry.

     -t	timeout_count
	     Set the number of seconds to wait for a neighbor query reply be-
	     fore retrying.  Default timeout is	2 seconds.

     The map-mbone utility must	be run as root.

     mrinfo(8),	mrouted(8), mtrace(8)

     Pavel Curtis

BSD				  May 8, 1995				   BSD


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