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dbeacon: Distributed IPv4/IPv6 multicast beacon


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 peers.


-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 connectivity -i IN, -interface IN Use IN instead of the default interface for multicast. -b BEACON_ADDR/PORT 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. -S GROUP_ADDR/PORT 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 matrix. -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. -syslog 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 <hugo@fivebits.net>.
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)

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