1.\" $OpenBSD: map-mbone.8,v 1.16 2024/12/01 09:58:15 kn Exp $ 2.\" $NetBSD: map-mbone.8,v 1.2 1995/10/03 23:16:53 thorpej Exp $ 3.\" 4.\" Mapper for connections between MRouteD multicast routers. 5.\" Written by Pavel Curtis <Pavel@PARC.Xerox.Com> 6.\" 7.\" Copyright (c) 1992, 2001 Xerox Corporation. All rights reserved. 8.\" 9.\" Redistribution and use in source and binary forms, with or without 10.\" modification, are permitted provided that the following conditions are met: 11.\" 12.\" Redistributions of source code must retain the above copyright notice, 13.\" this list of conditions and the following disclaimer. 14.\" 15.\" Redistributions in binary form must reproduce the above copyright notice, 16.\" this list of conditions and the following disclaimer in the documentation 17.\" and/or other materials provided with the distribution. 18.\" 19.\" Neither name of the Xerox, PARC, nor the names of its contributors may be 20.\" used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 25.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 26.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE XEROX CORPORATION OR 27.\" CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 28.\" EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 29.\" PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 30.\" OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 31.\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 32.\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 33.\" EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 34.\" 35.Dd $Mdocdate: December 1 2024 $ 36.Dt MAP-MBONE 8 37.Os 38.Sh NAME 39.Nm map-mbone 40.Nd Multicast connection mapper 41.Sh SYNOPSIS 42.Nm map-mbone 43.Op Fl fgn 44.Op Fl d Ns Op Ar level 45.Op Fl r Ar count 46.Op Fl t Ar seconds 47.Op Ar starting_router 48.Sh DESCRIPTION 49.Nm 50attempts to display all multicast routers that are reachable from the multicast 51router 52.Ar starting_router . 53If not specified on the command line, 54.Ar starting_router 55is 56.Dq localhost . 57.Nm 58must be run as root. 59.Pp 60.Nm 61sends an 62.Dv ASK_NEIGHBORS 63.Tn IGMP 64message to 65.Ar starting_router . 66A response contains the 67multicast version number 68of 69.Ar starting_router 70and the addresses of 71all its neighboring multicast routers. 72If the multicast version number is recent, then 73.Nm 74requests additional information such as metrics, thresholds, and flags. 75.Pp 76If a recursive search has been requested (see 77.Fl f ) , 78.Nm 79repeats the above operation for each new 80multicast router in the list of neighbors and 81continues the process until no new multicast routers are reported. 82.Pp 83The options are as follows: 84.Bl -tag -width "-t seconds" 85.It Fl d Ns Op Ar level 86Sets the debug level to 87.Ar level . 88When the debug level is greater than the default value of 890, additional debugging messages are printed to stderr. 90Regardless of 91the debug level, an error condition will always write an error message and will 92cause 93.Nm 94to terminate. 95Non-zero debug levels are: 96.Bl -enum -offset indent 97.It 98Print packet warnings, plus level 0 messages. 99.It 100Print notifications of down networks, plus level 1 messages. 101.It 102Print notifications of all packet timeouts, plus level 2 messages. 103.El 104.Pp 105Default is 0. 106.It Fl f 107Causes a recursive (flooding) search. 108If no 109.Ar starting_router 110is specified, a recursive search is always performed. 111.It Fl g 112Sets graphing format to GraphEd format. 113.It Fl n 114Disables DNS lookup for the names of the multicast routers. 115.It Fl r Ar count 116Sets the neighbor query retry limit to 117.Ar count . 118Default is 1. 119.It Fl t Ar seconds 120Sets the number of seconds to wait for a neighbor query 121reply before retrying to 122.Ar seconds . 123Default is 2. 124.El 125.Sh SEE ALSO 126.Xr mrinfo 8 , 127.Xr mrouted 8 , 128.Xr mtrace 8 129.Sh AUTHORS 130.An Pavel Curtis 131