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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

ifdata

ifdata(1)																 ifdata(1)

NAME

       ifdata - get network interface info without parsing ifconfig output

SYNOPSIS

       ifdata [options] {iface}

DESCRIPTION

       ifdata can be used to check for the existence of a network interface, or to get information abut the interface, such as its IP address. Un-
       like ifconfig or ip, ifdata has simple to parse output that is designed to be easily used by a shell script.

OPTIONS

       -h     Print out a help summary.

       -e     Test to see if the interface exists, exit nonzero if it does not.

       -p     Prints out the whole configuration of the interface.

       -pe    Prints "yes" or "no" if the interface exists or not.

       -pa    Prints the IPv4 address of the interface.

       -pn    Prints the netmask of the interface.

       -pN    Prints the network address of the interface.

       -pb    Prints the broadcast address of the interface.

       -pm    Prints the MTU of the interface.

       Following options are Linux only.

       -ph    Prints the hardware address of the interface.

       -pf    Prints the flags of the interface.

       -si    Prints out all the input statistics of the interface.

       -sip   Prints the number of input packets.

       -sib   Prints the number of input bytes.

       -sie   Prints the number of input errors.

       -sid   Prints the number of dropped input packets.

       -sif   Prints the number of input fifo overruns.

       -sic   Print the number of compressed input packets.

       -sim   Prints the number of input multicast packets.

       -so    Prints out all the output statistics of the interface.

       -sop   Prints the number of output packets.

       -sob   Prints the number of output bytes.

       -soe   Prints the number of output errors.

       -sod   Prints the number of dropped output packets.

       -sof   Prints the number of output fifo overruns.

       -sox   Print the number of output collisions.

       -soc   Prints the number of output carrier losses.

       -som   Prints the number of output multicast packets.

       -bips  Prints the number of bytes of incoming traffic measured in one second.

       -bops  Prints the number of bytes of outgoing traffic measured in one second.

AUTHOR

       Benjamin BAYART

								    2006-03-07								 ifdata(1)