Seems like you have a routing problem. Say you have 1 box with 2 interfaces, having IP x and y. When you try to ping or connect to either x or y, the routing table is being consulted. The answer of "what is the route to x" is "Local" - and it is treated as loopback. I don't think actual packets will go on the wire.
you can try crafting mind bogling routing rules to fix it, or better use 2 boxes. 2009/3/13 Daniel Feiglin <dilog...@inter.net.il>: > Hello folks! > > I'm trying to use a Linux box as a packet traffic generator. It has two > NICs configured with fixed IP addresses, 192.168.2.100/101. For testing > purposes, I connected the two NICs to each other with a crossed network > cable (hardware loopback). For what it's worth, they can both be pinged > from the host and the ifconfig output looks fine. > > Later, the crossed cable will be replaced by a radio link (which relates > to the purpose of all this). > > To carry out the packet generation, I downloaded and built the iperf > program (http://sourceforge.net/forum/forum.php?forum_id=808751). > > I'd like to sent stuff from .100 to .101 using the client and server > instances of iperf in two console sessions and (later) monitor what's > happening with tcpdump from a third session. > > For various reasons, it's not working. (I have successfully done it > using two machines on either side of the radio link, which is the > "standard" method.) > > Has anyone on the list done this (using iperf or something similar) > using a single box with two NICs? > > Regards, > > > Daniel > > P.S. I'll supply further background material if there is interest in > this subject. > > > > > > > _______________________________________________ > Linux-il mailing list > Linux-il@cs.huji.ac.il > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il > > -- Joan Collins - "The problem with beauty is that it's like being born rich and getting poorer." _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
