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MRINFO(8)		  BSD System Manager's Manual		     MRINFO(8)

NAME
     mrinfo -- display configuration info from a multicast router

SYNOPSIS
     mrinfo [-d	debug_level] [-r retry_count] [-t timeout_count]
	    multicast_router

DESCRIPTION
     The mrinfo	utility	attempts to display the	configuration information from
     the multicast router multicast_router.

     The mrinfo	utility	uses the ASK_NEIGHBORS IGMP message to the specified
     multicast router.	If this	multicast router responds, the version number
     and a list	of their neighboring multicast router addresses	is part	of
     that response.  If	the responding router has a recent multicast version
     number, then mrinfo requests additional information such as metrics,
     thresholds, and flags from	the multicast router.  Once the	specified mul-
     ticast router responds, the configuration is displayed to the standard
     output.

     The following options are available:

     -d	debug_level
	     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 mrinfo 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.

     -r	retry_count
	     Set the neighbor query retry limit.  Default is 3 retries.

     -t	timeout_count
	     Set the number of seconds to wait for a neighbor query reply.
	     Default timeout is	4 seconds.

SAMPLE OUTPUT
     mrinfo mbone.phony.dom.net
     127.148.176.10 (mbone.phony.dom.net) [version 3.3]:
      127.148.176.10 ->	0.0.0.0	(?) [1/1/querier]
      127.148.176.10 ->	127.0.8.4 (mbone2.phony.dom.net) [1/45/tunnel]
      127.148.176.10 ->	105.1.41.9 (momoney.com) [1/32/tunnel/down]
      127.148.176.10 ->	143.192.152.119	(mbone.dipu.edu) [1/32/tunnel]

     For each neighbor of the queried multicast	router,	the IP of the queried
     router is displayed, followed by the IP and name of the neighbor.	In
     square brackets the metric	(cost of connection), the threshold (multicast
     ttl) is displayed.	 If the	queried	multicast router has a newer version
     number, the type (tunnel, srcrt) and status (disabled, down) of the con-
     nection is	displayed.

IMPORTANT NOTE
     The mrinfo	utility	must be	run as root.

SEE ALSO
     map-mbone(8), mrouted(8), mtrace(8)

AUTHORS
     Van Jacobson

BSD				  May 8, 1995				   BSD

NAME | SYNOPSIS | DESCRIPTION | SAMPLE OUTPUT | IMPORTANT NOTE | SEE ALSO | AUTHORS

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