NAME

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

SYNOPSIS

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

       ssmpingd

DESCRIPTION

       ssmping  and  ssmpingd are network level multicast management tools that can be used to check whether one
       can receive multicast packets via SSM from a host.  The  host  target  given  to  ssmping  must  run  the
       ssmpingd  daemon,  which  listens  on UDP port 4321 for IPv4 and IPv6 unicast requests.  When it receives
       one, it responds to a well known SSM multicast group  which  ssmping  just  have  joined.   Depending  on
       whether  the  request  was  made  with  IPv4  or  IPv6,  the  group  is 232.43.211.234 or ff3e::4321:1234
       respectively.

OPTIONS

       For ssmpingd there are no options.  For ssmping 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

       asmping(1) a tool for checking whether can receive ASM.

       dbeacon(1) a distributed beacon multicast implementation.

BUGS

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

HISTORY

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

                                                  User Manuals                                        ssmping(1)