8 .Nd display configuration info from a multicast router
11 .Op Fl d Ar debug_level
12 .Op Fl r Ar retry_count
13 .Op Fl t Ar timeout_count
17 attempts to display the configuration information from the multicast router
18 .Ar multicast_router .
21 uses the ASK_NEIGHBORS IGMP message to the specified multicast router.
23 multicast router responds, the version number and a list of their neighboring
24 multicast router addresses is part of that response.
25 If the responding router
26 has a recent multicast version number, then
28 requests additional information such as metrics, thresholds, and flags from the
30 Once the specified multicast router responds, the
31 configuration is displayed to the standard output.
33 The following options are available:
34 .Bl -tag -width indent
35 .It Fl d Ar debug_level
37 When the debug level is greater than the
38 default value of 0, addition debugging messages are printed.
40 the debug level, an error condition, will always write an error message and will
44 Non-zero debug levels have the following effects:
45 .Bl -tag -width indent
47 packet warnings are printed to stderr.
49 all level 1 messages plus notifications down networks are printed to stderr.
51 all level 2 messages plus notifications of all packet
52 timeouts are printed to stderr.
54 .It Fl r Ar retry_count
55 Set the neighbor query retry limit.
57 .It Fl t Ar timeout_count
58 Set the number of seconds to wait for a neighbor query
60 Default timeout is 4 seconds.
64 .Nm mrinfo Ar mbone.phony.dom.net
65 127.148.176.10 (mbone.phony.dom.net) [version 3.3]:
66 127.148.176.10 -> 0.0.0.0 (?) [1/1/querier]
67 127.148.176.10 -> 127.0.8.4 (mbone2.phony.dom.net) [1/45/tunnel]
68 127.148.176.10 -> 105.1.41.9 (momoney.com) [1/32/tunnel/down]
69 127.148.176.10 -> 143.192.152.119 (mbone.dipu.edu) [1/32/tunnel]
72 For each neighbor of the queried multicast router, the IP of the queried router
73 is displayed, followed by the IP and name of the neighbor.
75 the metric (cost of connection), the treashold (multicast ttl) is displayed.
77 the queried multicast router has a newer version number, the type (tunnel,
78 srcrt) and status (disabled, down) of the connection is displayed.