Thank you, Ladies and gentlemen, I've learned something new today. I'm going to have to figure out how to do this one day so I can provide fail-over support for the other OSA.
On Tue, Jun 1, 2010 at 4:25 PM, Aria Bamdad <[email protected]> wrote: > You can have multiple subnets on one segment. For example, you can have > 10.1.1.x and 192.168.1.x packets using the same segment of ethernet. There > is nothing that prevents you from doing it and it is not uncommon. > > Aria > > > -----Original Message----- > > From: Linux on 390 Port [mailto:[email protected]] On Behalf Of > > Mark Pace > > Sent: Tuesday, June 01, 2010 4:19 PM > > To: [email protected] > > Subject: Re: z/VM and z/OS sharing OSAs? > > > > 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 > > ---------------------------------------------------------------------- > 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
