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)