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
[email protected]<mailto:[email protected]>


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