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MPD5(8) System Manager's Manual MPD5(8) NAME mpd5 -- netgraph multi-link PPP daemon SYNOPSIS mpd5 [-bkov] [-d directory] [-f file] [-p pid-file] [-s ident] [-m service] [configuration] DESCRIPTION mpd5 is a user mode PPP daemon using the netgraph(4) networking system. By using Netgraph, mpd5 combines the robustness and flexibility of a user-mode PPP implementation with the speed and reliability of kernel- mode packet forwarding. All PPP negotiation is handled in user level code, while all data intensive operations such as encryption, compres- sion, and multi-link framing are handled strictly in the kernel. Mpd supports several link layer types, a fully event-driven modem chat scripting language, and other features. mpd5 creates a ng_ppp(4) netgraph node that is placed between a ng_iface(4) netgraph interface one or more link layer devices, perform- ing multi-link PPP negotiation and encapsulation. In multi-link PPP a bundle is a collection of one or more links between two peers. Each link corresponds to some device (e.g., a modem), and each bundle corre- sponds to one netgraph interface. The idea is to use all of the links, together connected to a remote peer also performing multi-link PPP, to utilize their combined bandwidth. Packets routed through the netgraph interface travel in multi-link fragments over all of the links. Each link is a normal PPP link and can deliver complete packets as well, so redundancy is another benefit. Attempts to connect two links in the same bundle to different peers, or to a peer that is not configured for multi-link PPP, will fail. In general, everything is controlled by executing commands which are either entered via the console command line or read from a configura- tion file. If mpd5 is running as a background daemon, the console can be made accessible via telnet(1). Since commands may apply to a single link, the console prompt always shows the current bundle or the current link in that bundle. On startup mpd run commands from the startup la- bel of config file. After that, if configuration is supplied, mpd looks config file for a matching label and runs the corresponding com- mands. If configuration is not supplied, mpd looks for label named default. ON-LINE MANUAL Mpd is fully documented in the mpd manual, which is available in HTML. The manual can be found in the directory /usr/local/share/doc/mpd5. OPTIONS Mpd supports the following command options: -b --background Detach from the terminal and run as a background daemon. -d dirname --directory dirname Specify a configuration directory other than the default, /usr/local/etc/mpd5. -f file --file file Specify an initial configuration file other than the default, mpd.conf. -o --one-shot Terminate daemon after the last link shutdown. -p file --pidfile file Specify an lock/process ID storage file other than the default /var/run/mpd.pid. -k --kill Kill any existing mpd5 daemon currently running. The same pid- file must be used. -s ident --syslog-ident ident Identifier to use for syslog(3). The default - mpd -m service --pam-service service Service name to use for pam(3). The default - mpd -v --version Display the program version and exit. -h --help Display invocation usage and exit. FILES /usr/local/share/doc/mpd5 Directory containing the mpd manual /usr/local/etc/mpd5 Default configuration file directory mpd.conf Configuration file mpd.script Modem chat scripts mpd.secret Account name, password pairs /var/run/mpd.pid Stored process ID and lock file SEE ALSO netgraph(4), ngctl(8), ng_ppp(4), ng_iface(4), ppp(8). AUTHORS Archie Cobbs <archie@FreeBSD.org> Alexander Motin <mav@FreeBSD.org> based on ppp daemon written by Toshiharu OHNO <tony-o@iij.ad.jp> FreeBSD 13.2 2020-09-06 MPD5(8)
NAME | SYNOPSIS | DESCRIPTION | ON-LINE MANUAL | OPTIONS | FILES | SEE ALSO | AUTHORS
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