NAME

       asmping - check if you can receive IPv4/IPv6 multicast data from an internet host

SYNOPSIS

       asmping [ -46v ] [ -I interface ] [ -c count ] [ -s size ] group host

       ssmpingd

DESCRIPTION

       asmping  and  ssmpingd  are  network  level multicast management tools that can be used to
       check whether one can receive multicast packets via ASM from  a  host.   The  host  target
       given to asmping must run the ssmpingd daemon, which listens on UDP port 4321 for IPv4 and
       IPv6 unicast requests.  When it receives one, it responds to the specified multicast group
       which  asmping  just have joined.  Note that one can not use arbitrary groups. Independent
       of what group is specified, the last quarter of  the  address  is  forced  to  be  234  or
       ::4321:1234 for IPv4 or IPv6 respectively.

OPTIONS

       For ssmpingd there are no options.  For asmping the options are as follows.

       -4     Force IPv4

       -6     Force IPv6

       -v     Print client and server version information.

       -I interface
              Interface to join on

       -c count
              Stop after sending (and receiving) count requests (and replies)

       -s size
              Request replies to have a size of size bytes

SEE ALSO

       ssmping(1) a tool for checking whether can receive SSM.

       dbeacon(1) a distributed beacon multicast implementation.

BUGS

       Please report them to Stig Venaas <venaas@uninett.no>, the author of this tool.

HISTORY

       asmping  and  ssmpingd  were developed by Stig Venaas during the early days of the m6bone,
       the IPv6 multicast backbone.

                                           User Manuals                                asmping(1)