I don't know about z10 (don't have one), but we run with two OSA 1000BaseT as a failover pair shared between two z/OS and one z/VM/IFL lpars. The outside is one /24 network and we gave out individual host addresses and use a VSWITCH with two RDEVs on the z/VM side as well. The OSAs keep track of who is where and we never had a problem with this setup.
Best regards, Pieter Harder ________________________________________ Van: Linux on 390 Port [[email protected]] namens Tom Burkholder [[email protected]] Verzonden: dinsdag 1 juni 2010 21:19 Aan: [email protected] Onderwerp: z/VM and z/OS sharing OSAs? z/VMers, My disclaimer is I'm not a networking engineer but I have a zVM and networking question. I can provide more details, etc, but is anybody running z/VM and z/OS lpars on the same z10 and "SHR"ing the OSAs? We originally setup the z/VM proof-of-concept with VSWITCH but a single OSA to a CISCO switch. Other than a potential single point of failure, no problem, things work well. We have no spare OSAs (and would rather not purchase) but on the same z10 we have a test z/OS lpar with two (2) OSAs being used connected to two other CISCO switches (interconnected to each other for z/OS, but not to the current CISCO switch with the VSWITCH). If anybody is sharing OSA's with z/VM and z/OS lpars I'd be interested in getting some more information or ideas if possible. One of my biggest concern is being able to keep the same 192.168.xxx.yyy currently being used by z/VM on the single OSA onto the other OSAs/Switches if possible. Kind of a high-level diagram of what we got: zVMa lpar chpid 09 -------- CISCO switch XXXXXX using 192.168.xxx.yyy addresses. zOSa lpar chpid 05 ------- CISCO switch ZZZZZ-a\ zOSa lpar chpid 08 -------- CISCO switch ZZZZZ-b/ I'd like to SHR chpids 05/08, not screw up existing zOSa, be able to configure z/VM with the same 192.168.xxx.yyy addresses and update VSWITCH/controllers to use active/standby on chipds 05/08 (and free up chpid 09 OSA). I found the following pdf to be a good source, but I need some more information or help from the network side (e.g. can we share and keep the same 192.168.xxx.yyy subnet) http://linuxvm.org/present/misc/vswitch.pdf Thanks in advance for any help, assistance, or ideas, Tom Burkholder Brabant Water N.V. Postbus 1068 5200 BC 's-Hertogenbosch http://www.brabantwater.nl Handelsregister: 16005077 ---------------------------------------------------------------------- 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
