Okay - I'm going to show my ignorance here. How can you have multiple subnets on the same OSA port?
On Tue, Jun 1, 2010 at 4:16 PM, Marcy Cortes <[email protected]>wrote: > "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:[email protected]] On Behalf Of Mark > Pace > Sent: Tuesday, June 01, 2010 12:59 PM > To: [email protected] > 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 < > [email protected]> 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 [[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 > > > > > > -- > Mark Pace > Mainline Information Systems > 1700 Summit Lake Drive > Tallahassee, FL. 32317 > > ---------------------------------------------------------------------- > 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 > > ---------------------------------------------------------------------- > 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 > -- Mark Pace Mainline Information Systems 1700 Summit Lake Drive Tallahassee, FL. 32317 ---------------------------------------------------------------------- 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
