asmping(1)						      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.

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