asmping(1) check if you can receive IPv4/IPv6 multicast data from an internet


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



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.


For ssmpingd there are no options. For asmping the options are as follows.
Force IPv4
Force IPv6
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


Please report them to Stig Venaas <[email protected]>, the author of this tool.


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