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)">dbeacon(1)">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.