"Since they are on the same port they are obviously on the same subnet."
Well no, you can have lots of subnets on the same port. But yes, you can share them with z/OS if you have to. Marcy "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." -----Original Message----- From: Linux on 390 Port [mailto:linux-...@vm.marist.edu] On Behalf Of Mark Pace Sent: Tuesday, June 01, 2010 12:59 PM To: LINUX-390@vm.marist.edu Subject: Re: [LINUX-390] z/VM and z/OS sharing OSAs? I don't know a thing about the Cisco switch, but I have 3 LPARs, 1 z/VM and 2 z/OS, sharing the same OSA Express-3 port. Since they are on the same port they are obviously on the same subnet. On Tue, Jun 1, 2010 at 3:48 PM, Harder, Pieter < pieter.har...@brabantwater.nl> wrote: > 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 [linux-...@vm.marist.edu] namens Tom Burkholder [ > tom.burkhol...@qvc.com] > Verzonden: dinsdag 1 juni 2010 21:19 > Aan: LINUX-390@VM.MARIST.EDU > 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 lists...@vm.marist.edu with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > -- Mark Pace Mainline Information Systems 1700 Summit Lake Drive Tallahassee, FL. 32317 ---------------------------------------------------------------------- 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
