NAME
mrinfo — Multicast Routing Configuration Information Tool
SYNOPSIS
/usr/sbin/mrinfo
[-d
debuglevel]
[-r
retries]
[-t
timeout]
[
multicast-router
]
DESCRIPTION
mrinfo
requests the configuration information from
the
multicast-ourter,
and prints the information to the standard out.
multicast-router
can be either an IP address or a system name.
mrinfo
sends out the
ASK_NEIGHBORS
igmp message to
the specified
multicast-router,
when the router receives the request,
it sends back its configuration information. If the
multicast-router
is not specified, the request is sent the local router.
The the configuration information for each interface is printed in the
following format:
interface_addr -> neighbor_addr (neighbor_name) [metrics/thresh/flags]
If there are multiple neighbor routers on one interface, they will all be
reported on the output.
The possible values for
flag
are:
- tunnel
Neighbors are reached via tunnel.
- srcrt
The tunnel uses IP source routing.
- down
The interface is down.
- disabled
The interface is administratively disabled for multicast routing.
- querier
The local router is the querier of the subnet.
Please see
mrouted(1M)
for
metrics
and
thresh.
The command line options are:
- -ddebuglevel
Sets the level for printing out the debug message. The default is 0,
only error and warning messages will be printed. Debug level three
prints most the messages.
- -rretries
Sets the retry times to pull the routing daemon for information. The
default is 3.
- -ttimeout
Specifies the timeout value in seconds for waiting the reply. The default value
is 4.
EXAMPLE
The following is an example of quering the multicasting configuration
from the local routing daemon.
mrinfo
127.0.0.1 (localhost) [version 3.3]:
15.13.106.144 -> 15.13.106.145 (hpntcbs.cup.hp.com) [10/1/querier]
193.2.1.39 -> 0.0.0.0 (all-zeros-broadcast) [1/1/disabled]
15.13.106.144 -> 15.255.176.33 (matmos.hpl.hp.com) [10/1/tunnel]
15.13.106.144 -> 15.17.20.7 (hpspddc.vid.hp.com) [10/1/tunnel/down]
Note
mrinfo
must be run as root.
AUTHOR
mrinfo
was developed by Van Jacobson.
Printable version
