On Tue, 2003-07-22 at 12:01, Matt Lashley/SCO wrote: > I think we may have covered this before, but I can't find it in the > archives. > > Has anyone had any experience combing, or getting the effect of, combining > OSA cards? I have two and am looking to provide failover and load sharing. > Something along the lines of EtherChannel would be great but I don't see > that it's supported for the S390 kernel.
But if you have VM driving the OSA hardware, and guest LANs behind it...you should be able to use Equal Cost Multipath to balance across your OSAs. > Any advice on using Zebra? Other possibilities? I don't think IBM's VIPA > will do what I want - but maybe? All suggestions welcome. VIPA doesn't help with load-balancing, but it's great for failover. And yes, running Zebra to advertise OSPF routes is the easy way to do this. If you're brave or very memory-constrained you could try to do it statically with IP Policy Routing (the iproute2 package), but Zebra's much easier. You could do crude load-balancing with multiple VIPAs plus DNS round-robin, or, again you could use policy routing. For more sophisticated stuff a better bet is something like a Cisco Local Director out in the network acting as a sprayer for you. Adam
