1 .\" $FreeBSD: src/usr.sbin/mrouted/map-mbone.8,v 1.7.2.4 2003/03/11 21:13:51 trhodes Exp $
2 .\" $DragonFly: src/usr.sbin/mrouted/map-mbone.8,v 1.2 2003/06/17 04:29:57 dillon Exp $
9 .Nd multicast connection mapper
12 .Op Fl d Ar debug_level
16 .Op Fl r Ar retry_count
17 .Op Fl t Ar timeout_count
18 .Op Ar starting_router
23 attempts to display all multicast routers that are reachable from the multicast
25 If not specified on the command line, the default multicast
32 traverses neighboring multicast routers by sending the ASK_NEIGHBORS IGMP
33 message to the multicast starting_router.
34 If this multicast router responds,
35 the version number and a list of their neighboring multicast router addresses is
36 part of that response.
37 If the responding router has recent multicast version
40 requests additional information such as metrics, thresholds, and flags from the
42 For each new occurrence of neighboring multicast router in
43 the reply and provided the flooding option has been selected, then
45 asks each of this multicast router for a list of neighbors.
47 for unique routers will continue until no new neighboring multicast routers
50 The following options are available:
51 .Bl -tag -width indent
54 When the debug level is greater than the
55 default value of 0, addition debugging messages are printed.
57 the debug level, an error condition, will always write an error message and will
61 Non-zero debug levels have the following effects:
62 .Bl -tag -width indent
64 packet warnings are printed to stderr.
66 all level 1 messages plus notifications down networks are printed to stderr.
68 all level 2 messages plus notifications of all packet
69 timeouts are printed to stderr.
73 Flooding allows the recursive search
74 of neighboring multicast routers and is enable by default when starting_router
77 Set graphing in GraphEd format.
79 Disable the DNS lookup for the multicast routers names.
80 .It Fl r Ar retry_count
81 Set the neighbor query retry limit.
83 .It Fl t Ar timeout_count
84 Set the number of seconds to wait for a neighbor query
85 reply before retrying.
86 Default timeout is 2 seconds.
91 utility must be run as root.