On Nov 13, 2007 2:14 PM, Kelly McLaughlin &lt;<a href="mailto:kelmac@mokancomm.net">kelmac@mokancomm.net</a>&gt; wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">




<div>
<div><span><font face="Arial" size="2">Greetings all, ( Hi 
Monty and Jim )</font></span></div>
<div><span><font face="Arial" size="2"></font></span>&nbsp;</div>
<div><span><font face="Arial" size="2">I need to specify 
communication from a multicast IP to communicate on a specific Network 
Card. </font></span><br>&nbsp;</div></div></blockquote><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div><span><font face="Arial" size="2">
My routing table appears as follows:</font></span></div>
<div><span><font face="Arial" size="2"></font></span>&nbsp;</div>
<div><span><font face="Arial" size="2">Destination&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
Gateway&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
Genmask&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
Flags&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
MSS 
Window&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
irtt&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
I Face</font></span></div>
<div><span><font face="Arial" size="2"></font></span>&nbsp;</div>
<div><span><font face="Arial" size="2"><a href="http://216.198.99.0" target="_blank">216.198.99.0</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="http://0.0.0.0" target="_blank">0.0.0.0</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
<a href="http://255.255.255.192" target="_blank">255.255.255.192</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
U&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
0 
0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
eth1</font></span></div>
<div><span><font face="Arial" size="2"><a href="http://10.0.0.0" target="_blank">10.0.0.0</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="http://0.0.0.0" target="_blank">0.0.0.0</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
<a href="http://255.255.255.0" target="_blank">255.255.255.0</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
U&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
0 
0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;eth0</font></span></div>
<div><span><font face="Arial" size="2"><a href="http://169.254.0.0" target="_blank">169.254.0.0</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
<a href="http://0.0.0.0" target="_blank">0.0.0.0</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
<a href="http://255.255.0.0" target="_blank">255.255.0.0</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
U&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
0 
0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;eth1</font></span></div>
<div><span><font face="Arial" size="2"><a href="http://0.0.0.0" target="_blank">0.0.0.0</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="http://216.198.99.254" target="_blank">216.198.99.254</a>&nbsp;&nbsp;&nbsp;&nbsp; 
<a href="http://0.0.0.0" target="_blank">0.0.0.0</a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
UG&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0 
0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;eth1</font></span></div>
<div><span><font face="Arial" size="2"></font></span>&nbsp;</div>
<div><span><font face="Arial" size="2">I have 2 network 
cards.&nbsp; One with the adress of <a href="http://216.198.99.247" target="_blank">216.198.99.247</a>&nbsp; and a second NIC with 
an adress of <a href="http://10.0.0.2" target="_blank">10.0.0.2</a>.&nbsp; The NIC with the 10. address is what I want to use 
for a failover communication with a second server.&nbsp; The failover 
communication software uses a&nbsp; multicast address of <a href="http://229.255.0.1" target="_blank">229.255.0.1</a>.&nbsp;</font></span></div></div></blockquote><div>If that software can be reconfigured to use the actual unicast address of the other server, it would be better. Unicast IP is much cleaner.&nbsp; Your Cisco is clearly not in on the multicast games you&#39;re trying to play, and by your description you don&#39;t have a router between the servers on the 10. network, just a crossover cable. 
<br><br>That means you have to teach each of the two machines about the multicast addresses you want them to use.<br><br>If you want packets addressed to <a href="http://229.255.0.1">229.255.0.1</a> to be sent via eth0, then try using this command:
<br><b><font style="font-family: courier new,monospace;" size="2">/sbin/route add -host <a href="http://229.255.0.1">229.255.0.1</a> dev eth0</font></b><br>Put it in /etc/rc.local so it will always be run at boot.&nbsp; This should allow other multicast packets to stay on eth1.&nbsp; What this doesn&#39;t say is whether the other server will be listening on that IP.&nbsp; For that you may need to use an alias IP.&nbsp; I&#39;ve never set up multicast, so I don&#39;t know for sure what all that entails.
<br>&nbsp;</div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div><span><font face="Arial" size="2"> The 
default gateway is attached to the 216. network.&nbsp; And ping tests result in 
the following:&nbsp; Pinging from 10. NIC I can only receive replies from the 
other 10. address.&nbsp; From the 216. NIC I receive replies from everything but 
I cannot establish the failover on this NIC. </font></span></div>
<div><span><font face="Arial" size="2"></font></span>&nbsp;</div>
<div><span><font face="Arial" size="2">What I want to do is 
tell my computer ( Red Hat Enterprise Linux V.3 ) to force communication 
from&nbsp;<a href="http://229.255.0.1" target="_blank">229.255.0.1</a> across the <a href="http://10.0.0.2" target="_blank">10.0.0.2</a> network card.&nbsp; If I can 
accomplish this I believe my failover will work.</font></span></div>
<div><span><font face="Arial" size="2"></font></span> <br></div></div></blockquote></div><br>