it's a long time I am no more involved in LINUX and Networking technologies, so I hope I will not be confusing . I this case, I am sure the community will correct me.
I think Heinz is searching for is quite similar to the 'NIC teaming' ; it is explained in some networking virtualization documentation such as the CISCO/VMWARE one: http://www.cisco.com/en/US/docs/solutions/Enterprise/Data_Center/vmware/VMware_ns224_Networking_Solutions_Design_Guide_Chapter.html#wp696452 The feature is probably the one named 'active/active with load balancing based on VM MAC-address hash' in the chapter 'using NIC teaming for connectivity redundancy'. I must admit I am not up to date, but I think zVM doesn't support such type of teaming. As stated in the appends on the FORUM (and in your original one) zVM VSWITCH supports the IEEE 802.3ad Link aggregation protocol, so the OSA ports have to be connected to the same SWITCH (or CLUSTERs of SWITCHs : there are families of switch products such as CISCO 3750 that can closely connected and are viewed as a single switch ; in your case - 6500 - the VSS could be an option). An alternative could perhaps be the CHANNEL BONDING. There are some presentation on SHARE and some documents on SOURCEFORGE: http://www.linuxvm.org/Present/SHARE111/S9267kw.pdf http://sourceforge.net/project/showfiles.php?group_id=24692&package_id=146474 I think Bonding can be done with native OSA; not sure it is possible using two different vswitches. As stated by Pieter it is difficult to obtain perfect load balancing; the various algoritms announce MAC addresses according some rules and 50% LB is not guaranted. Franco Mignogna IBM Italia S.p.A. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
