Hi Tom, I am sharing 2 OSA with 4 z/OS and 2 z/VMs. Each z/VM is using its own VLAN using VLAN tagging and the z/OS is using its own VLAN as a native VLAN. The VSWITCH is using both OSA devices: one as the primary and the second as the backup device. The VSWITCH is forwarding the packets to the Linux machines in access mode (making the Linux guests unaware of vlan tagging). You need to work with your CISCO admin to get this kind of concept configured at your place... But sure you can get it to work with no technical problems (I did).
If you need help you can contact me directly... Good luck, Offer Baruch -----Original Message----- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of Tom Burkholder Sent: Tuesday, June 01, 2010 10:19 PM To: LINUX-390@VM.MARIST.EDU Subject: 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 Tom Burkholder | QVC Enterprise Technology Services 484-701-2173 | cell: 484-614-6226 tom.burkhol...@qvc.com<mailto:tom.burkhol...@qvc.com> This message (including any attachments) contains confidential information intended for a specific individual and purpose, and is protected by law. If you are not the intended recipient of this e-mail (even if the e-mail address above is yours), (i) you may not use, copy or retransmit it, (ii) please delete this message and (iii) please notify the sender immediately. Any disclosure, copying, or distribution of this message or the taking of any action based on it, is strictly prohibited. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
