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Overview
The mrouted Routing Daemon
Chapter 1 17
The mrouted Routing Daemon
mrouted (pronounced “M route D”) is a routing daemon that forwards IP
multicast datagrams, within an autonomous network, through routers
that support IP multicast addressing. mrouted implements the
Distance-Vector Multicast Routing Protocol (DVMRP). The ultimate
destination of multicast datagrams are host systems that are members of
one or more multicast groups.
Multicasting enables a client to establish one-to-many and
many-to-many communication with other hosts and is used extensively
in networking applications such as audio and video teleconferencing,
where multiple hosts need to communicate with each other
simultaneously.
NOTE You cannot use System Administration Manager (SAM) to configure
mrouted.
mrouted routes multicast datagram packets only on certain network
interfaces, such as EISA Ethernet (lan2) and EISA FDDI (from a
provider other than HP), and the interface types vary depending on the
system platform.
When you install the HP-UX 11i v2 operating system, mrouted is
automatically installed on your system.
For more information on mrouted, type man 1m mrouted at the HP-UX
prompt.
Multicasting Overview
This section describes the multicast routing protocol implemented in
mrouted, and the multicast addresses and groups.
DVMRP Protocol
mrouted implements the Distance-Vector Multicast Routing Protocol
(DVMRP). You can use DVMRP, an Interior Gateway Protocol (IGP), to
route multicast datagrams within an autonomous network. The primary
purpose of DVMRP is to maintain the shortest return paths to the source