NAME    [Toc]    [Back]

       mrinfo  - Displays configuration information from a multicast
 router

SYNOPSIS    [Toc]    [Back]

       /usr/sbin/mrinfo [-d  debug_level]  [-r  retry_count]  [-t
       timeout_count] multicast_router

OPTIONS    [Toc]    [Back]

       Sets the debug level. When the debug level is greater than
       0  (the  default),  additional  debugging   messages   are
       printed. Regardless of the debug level, if an error condition
 occurs, mrinfo writes an  error  message  and  terminates.
   Nonzero  debug levels have the following effects:
       Prints packet warnings to stderr.  Prints all level 1 messages
  and  notifications  of  down  networks  to  stderr.
       Prints all level  2  messages  and  notifications  of  all
       packet  timeouts to stderr.  Specifies the number of times
       to retry a neighbor query.   The  default  is  3  retries.
       Specifies  the number of seconds to wait for a neighbor to
       reply to a query. The default timeout is 4 seconds.

DESCRIPTION    [Toc]    [Back]

       The mrinfo command displays the configuration  information
       from the multicast router multicast_router.

       The mrinfo command sends the ASK_NEIGHBORS IGMP message to
       the specified multicast router.  If the  multicast  router
       responds,  the  response includes the version number and a
       list of addresses for their neighboring multicast routers.
       If  the  responding  router has a recent multicast version
       number, mrinfo requests  additional  information  such  as
       metrics,   thresholds,  and  options  from  the  multicast
       router.  Once the specified multicast router responds, the
       configuration is displayed to the standard output.

RESTRICTIONS    [Toc]    [Back]

       You must be superuser in order to run mrinfo.

EXAMPLES    [Toc]    [Back]

       The  following example shows the output of the mrinfo command
 where mbone.phony.dom.net is specified as the  multicast
  router:  mrinfo  mbone.phony.dom.net  127.148.176.10
       (mbone.phony.dom.net) [version 3.3]:
        127.148.176.10 -> 0.0.0.0 (?) [1/1/querier]
        127.148.176.10   ->   127.0.8.4    (mbone2.phony.dom.net)
       [1/45/tunnel]
        127.148.176.10  ->  105.1.41.9  (momoney.com)  [1/32/tunnel/down]

        127.148.176.10   ->   143.192.152.119    (mbone.dipu.edu)
       [1/32/tunnel]

       For  each neighbor of the queried multicast router, the IP
       address of the queried router is  displayed,  followed  by
       the  IP address and name of the neighbor. In square brackets,
 the metric (cost of  connection)  and  the  threshold
       (multicast  ttl)  are  displayed. If the queried multicast
       router has a  newer  version  number,  the  type  (tunnel,
       srcrt)  and  status (disabled, down) of the connection are
       displayed.

SEE ALSO    [Toc]    [Back]

       Commands: map-mbone(8), mrouted(8), mtrace(8)

       Networking: mbone.info(7)



                                                        mrinfo(8)