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map-mbone(8)							 map-mbone(8)


  map-mbone - Multicast	connection mapper


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


  -d  Sets the debug level. When the debug level is greater than 0 (the
      default),	additional debugging messages are printed.  Regardless of the
      debug level, if an error occurs, map-mbone writes	an error message and
      terminates.  Nonzero debug levels	have the following effects:

      1	  Prints packet	warnings to stderr.

      2	  Prints all level 1 messages and notifications	of down	networks to

      3	  Prints all level 2 messages and notifications	of all packet
	  timeouts to stderr.

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

  -g  Specifies	graphing in GraphEd format.

  -n  Disables the Domain Name Service (DNS) lookup for	names of multicast

  -r retry_count
      Specifies	the number of times to retry a neighbor	query.	The default
      is 1 retry.

  -t timeout_count
      Specifies	the number of seconds to wait for a neighbor to	reply to a
      query before retrying.  The default timeout is 2 seconds.


  The map-mbone	program	displays information about 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 local host.

  The map-mbone	program	traverses neighboring multicast	routers	by sending
  the ASK_NEIGHBORS IGMP message to the	multicast starting_router.  If this
  multicast router responds, the response includes the version number and a
  list of addresses of neighboring multicast routers.  If the responding
  router has a recent multicast	version	number,	map-mbone requests additional
  information such as metrics, thresholds, and options from the	multicast
  router. If the flooding option (-f) is specified, map-mbone asks each	new
  neighboring multicast	router for a list of neighbors.	 This search for
  unique routers continues until no new	neighboring multicast routers are


  You must be superuser	in order to run	map-mbone.


  Commands: mrinfo(8), mrouted(8), mtrace(8)

  Networking: mbone.info(7)