NAME
map-mbone - Multicast connection mapper
SYNOPSIS
/usr/sbin/map-mbone [
-d debug_level ] [
-f ] [
-g ] [
-n ] [
-r retry_count ] [
-t
timeout_count ] [
starting_router ]
DESCRIPTION
map-mbone attempts to display all multicast routers that are reachable
from the multicast
starting_router. If not specified on the command
line, the default multicast
starting_router is the localhost.
map-mbone traverses neighboring multicast routers by sending the
ASK_NEIGHBORS IGMP message to the multicast starting_router. If this multicast
router responds, the version number and a list of their neighboring multicast
router addresses is part of that response. If the responding router has recent
multicast version number, then
map-mbone requests additional
information such as metrics, thresholds, and flags from the multicast router.
For each new occurrence of neighboring multicast router in the reply and
provided the flooding option has been selected, then
map-mbone asks
each of this multicast router for a list of neighbors. This search for unique
routers will continue until no new neighboring multicast routers are reported.
INVOCATION
"-d" option sets the debug level. When the debug level is greater than
the default value of 0, addition debugging messages are printed. Regardless of
the debug level, an error condition, will always write an error message and
will cause
map-mbone to terminate. Non-zero debug levels have the
following effects:
- level 1
- packet warnings are printed to stderr.
- level 2
- all level 1 messages plus notifications down networks are
printed to stderr.
- level 3
- all level 2 messages plus notifications of all packet
timeouts are printed to stderr.
"-f" option sets flooding option. Flooding allows the recursive search
of neighboring multicast routers and is enable by default when starting_router
is not used.
"-g" option sets graphing in GraphEd format.
"-n" option disables the DNS lookup for the multicast routers names.
"-r retry_count" sets the neighbor query retry limit. Default is 1
retry.
"-t timeout_count" sets the number of seconds to wait for a neighbor
query reply before retrying. Default timeout is 2 seconds.
IMPORTANT NOTE
map-mbone must be run as root.
SEE ALSO
mrouted(8)
, mrinfo(8)
, mtrace(8)
AUTHOR
Pavel Curtis