f014b7e69b
endian-ness fix, Router Alert options on IGMP messages, and a new keyword, "advert_metric", for fine-tuning tunnel metrics. This also includes a new mtrace, which is also unreleased but builds significantly on the experiences of users' troubles with using and understanding mtrace in release 3.8 . (unreleased does not, of course, mean untested!) This is a candidate for both 2.2 and 2.1.6 .
84 lines
2.5 KiB
Groff
84 lines
2.5 KiB
Groff
.TH MRINFO 8
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.UC 5
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.SH NAME
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mrinfo \- Displays configuration info from a multicast router
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.SH SYNOPSIS
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.B /usr/sbin/mrinfo
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[
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.B \-d
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.I debug_level
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] [
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.B \-r
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.I retry_count
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] [
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.B \-t
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.I timeout_count
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]
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.B multicast_router
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.SH DESCRIPTION
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.I mrinfo
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attempts to display the configuration information from the multicast router
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.I multicast_router.
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.PP
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.I mrinfo
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uses the ASK_NEIGHBORS IGMP message to the specified multicast router. If this
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multicast router responds, the version number and a list of their neighboring
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multicast router addresses is part of that response. If the responding router
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has a recent multicast version number, then
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.I mrinfo
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requests additional information such as metrics, thresholds, and flags from the
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multicast router. Once the specified multicast router responds, the
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configuration is displayed to the standard output.
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.br
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.ne 5
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.SH INVOCATION
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.PP
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"\-d" option sets the debug level. When the debug level is greater than the
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default value of 0, addition debugging messages are printed. Regardless of
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the debug level, an error condition, will always write an error message and will
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cause
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.I mrinfo
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to terminate.
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Non-zero debug levels have the following effects:
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.IP "level 1"
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packet warnings are printed to stderr.
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.IP "level 2"
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all level 1 messages plus notifications down networks are printed to stderr.
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.IP "level 3"
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all level 2 messages plus notifications of all packet
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timeouts are printed to stderr.
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.PP
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"\-r retry_count" sets the neighbor query retry limit. Default is 3 retry.
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.PP
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"\-t timeout_count" sets the number of seconds to wait for a neighbor query
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reply. Default timeout is 4 seconds.
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.PP
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.SH SAMPLE OUTPUT
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.nf
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.I mrinfo mbone.phony.dom.net
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127.148.176.10 (mbone.phony.dom.net) [version 3.3]:
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127.148.176.10 -> 0.0.0.0 (?) [1/1/querier]
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127.148.176.10 -> 127.0.8.4 (mbone2.phony.dom.net) [1/45/tunnel]
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127.148.176.10 -> 105.1.41.9 (momoney.com) [1/32/tunnel/down]
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127.148.176.10 -> 143.192.152.119 (mbone.dipu.edu) [1/32/tunnel]
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.fi
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.PP
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For each neighbor of the queried multicast router, the IP of the queried router
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is displayed, followed by the IP and name of the neighbor. In square brackets
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the metric (cost of connection), the treashold (multicast ttl) is displayed. If
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the queried multicast router has a newer version number, the type (tunnel,
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srcrt) and status (disabled, down) of the connection is displayed.
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.PP
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.SH IMPORTANT NOTE
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.I mrinfo
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must be run as root.
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.PP
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.SH SEE ALSO
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.BR mrouted (8) ,
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.BR map-mbone (8) ,
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.BR mtrace (8)
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.PP
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.SH AUTHOR
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Van Jacobson
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