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       dbeacon - Distributed IPv4/IPv6 multicast beacon


       dbeacon  -a  MAIL  -b  BEACON_ADDR[/PORT]  [-i  INTFNAME] [-n NAME] [-S
       [GROUP_ADDR[/PORT]] [-s ADDR] [-d [FILE]] [-I NUMBER] [-W type$url] [-L
       program] [-C CC] [-4] [-6] [-v] [-P] [-U] [-V] [-F flag] [-O] [-B ADDR]


       dbeacon is a network level management tool aiming  at  getting  various
       statistics  about  multicast  connectivity. Its first usage is to check
       out if you can send/receive toward/from an IPv4/IPv6 multicast network.
       Its  second  usage  is  to  gather  various statistics by using a known
       multicast ASM group, for example TTL between each multicast peers, loss
       or  jitter  figures.  Theses  statistics are kept internally but can be
       dumped periodically in a file in  xml  format  for  latter  processing.
       Statistics  gathering  is  completetly  distributed  and  rely  on  the
       powerful nature of ASM. No server is required, but maybe a http  server
       for  accessing  the  statistics  and  build  an adjacency matrix of the


       -n NAME, -name NAME
              The  name  identifying  you  on  the  dbeacon  session.  If  not
              specified, dbeacon will use the hostname of the running machine.

       -a MAIL
              Administrative contact. This is an e-mail used for join you, for
              example  to notify you that something is wrong is your multicast

       -i IN, -interface IN
              Use IN instead of the default interface for multicast.

              This is the IPv4/IPv6 address of the ASM group used  by  dbeacon
              to gather statistics. It can be specified as a DNS name too.

              Enables SSM reception/sending on optional GROUP_ADDR/PORT

       -O     This  option enable SSM data sending in addition to ASM data. It
              can be used to check if people can reach you via SSM.

       -B ADDR
              This allows you to bootstrap from an ADDR that is already in the
              matrix.  This  option  is  useful  when  you ASM connectivity is
              broken but SSM connectivity works.

       -P, -ssmping
              Enable SSM Ping server capability.

       -s ADDR
              Bind to local address. This allow you to specify  the  multicast
              source of the packets sent by your beacon.

       -d FILE
              Dump  periodic  reports to dump.xml or specified file. This file
              may be latter processed by any XML compliant script. On  a  http
              server,  you  can  process  the  dump to create a nice adjacency

       -I NUMBER, -interval NUMBER
              Interval between refresh of the dump file. Defaults to 5 secs if
              not specified

       -W URL, -website URL
              Specify a website to announce.

       -Wm URL, -matrix URL
              Specify your matrix URL.

       -Wl URL, -lg URL
              Specify your looking glass URL.

       -C CC  Specify your two letter Country Code.

       -L program
              Launch  program  after each dump. The first argument will be the
              dump filename.

       -F flag
              Specify a flag to announce. For example to  announce  that  your
              host is running a ssmpingd daemon, use ‘ssmping’ as a flag.

       -4, -ipv4
              Force IPv4 usage (Default is IPv6).

       -6, -ipv6
              Force IPv6 usage

       -v     verbose mode (use several for more verbosity)

       -U     Dump periodic bandwidth usage reports to stdout

       -D, -daemon
              fork to the background (daemonize)

       -pidfile FILE
              Path to the PID file to write to.

              Outputs using syslog facility.

       -c FILE
              Specifies  the  configuration  file  to  use.  Each of the above
              command-line parameters can be defined there.

       -V, -version
              Outputs version information and leaves


       Should   be   reported   to   the   core    developer    Hugo    Santos


       dbeacon  is  a  joint  work  of  Hugo  Santos, Sebastien Chaumontet and
       Mickael Hoerdt. It has been done in the early days of the m6bone,  when
       nobody  knew if the SPTs or RPTs were being used between hosts and also
       to evaluate the performance and deployment of SSM.

                                 User Manuals                       dbeacon(1)