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NetBSD 6.1.5 - man page for mrinfo (netbsd section 8)

MRINFO(8)										MRINFO(8)

NAME
       mrinfo - Displays configuration info from a multicast router

SYNOPSIS
       /usr/sbin/mrinfo  [  -d	debug_level  ]	[  -r  retry_count  ] [ -t timeout_count ] multi-
       cast_router

DESCRIPTION
       mrinfo attempts to display the configuration information from the multicast router  multi-
       cast_router.

       mrinfo uses the ASK_NEIGHBORS IGMP message to the specified multicast router. If this mul-
       ticast 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 multicast router responds, the
       configuration is displayed to the standard output.

INVOCATION
       "-d" option sets the debug level. When the debug level is greater than the  default  value
       of  0,  addition  debugging  messages are printed. Regardless 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" sets the neighbor query retry limit. Default is 3 retry.

       "-t timeout_count" sets 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 dis-
       played, 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 connection is displayed.

IMPORTANT NOTE
       mrinfo must be run as root.

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

AUTHOR
       Van Jacobson

4.2 Berkeley Distribution								MRINFO(8)


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