Is layer 2 only available to z/VM TCPIP and linux?  I'm getting errors on my
z/VSE guest and I don't even want to bother starting my z/OS 1.9 guest if
it's not going to work on the layer 2 vswitch.  I'll just go ahead and
change the vswitch and TCPIP back to layer 3.

On Tue, Dec 16, 2008 at 1:31 PM, Alan Altmark <alan_altm...@us.ibm.com>wrote:

> On Tuesday, 12/16/2008 at 10:02 EST, Mark Pace <mpac...@gmail.com> wrote:
> > If I update one VM to 5.4 before another running 5.2, can one be layer 2
> while
> > the other is layer 3?  Each is sharing the same physical OSA, but
> different
> > addresses.
>
> I don't recall the machine on which it first occurred (z9?), but you can
> talk between L2 and L3 on the same OSA.
>
> > While I am installing the new VM 2nd level I have it connected to my 1st
> level
> > vswitch.  Can the 2nd level vswitch be layer 2 while the 1st level
> switch it is
> > connected to is layer 3?
>
> No.  z/VM does not virtualize the mixed L2/L3 nature of OSA.
>
> Alan Altmark
> z/VM Development
> IBM Endicott
>



-- 
Mark Pace
Mainline Information Systems
1700 Summit Lake Drive
Tallahassee, FL. 32317

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