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How to multicast on different IP network

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Operating Systems HP-UX How to multicast on different IP network
# 1  
Old 10-08-2006
How to multicast on different IP network
Hi, there
On HP-UX, I want to multicast packets on two different IP network repectively.
The two NIC are configured with two different IP. The routes are added with one default and one net for each IP . The multisender programs bind their own local IP, multireceiver programs add the membership with the same multicast address but different port and interface(IP). Normally, the pair of sender and receiver works correctly. When we pull out the network wired that the default route is configured, the multicast packets can not received on two network. However, when we pull out the network wired that do not configured default route, the packets can still be received with the two multireceiver, at this time, one of the IP can not pinged.
So the above test makes the following results:
1. The multicast has nothing to do with the local IP address, it only cares about the multicast address and port
2. The default route decides the multicast packets whether they can send out.

My question is how I can multicast the packets on the different IP network respectively. Once one of the network failed or its wired is pull out, the other network can still multicast normally. That means how I can implementate the dual network multiucasting,thanks.
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LEARN ABOUT DEBIAN

ssmping

ssmping(1)						      General Commands Manual							ssmping(1)

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)