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asmping(1)             DragonFly General Commands Manual            asmping(1)

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)