On Thursday, 01/06/2005 at 11:06 EST, Dave Kutz <[EMAIL PROTECTED]> wrote: > we now are moving our zOS and zVM chpids so that the two OSA ports will be > exclusively used by zVM and both OSAs in the same subnet. > Now another confusing point which the pdfs and manuals don't come out and > clearly say. > Our zVM main tcp stack has device/link statements for the two OSA ports. > The channel addresses used are FB50,3 and FC50,3. > Then we are setting up a vswitch zVM controller to share these two OSA > ports. > Question is 'Does the zVM controller code in its RDEV the same channel > addresses (Fb50 and Fc50) as the main zVM? Or do we need to do an I/O HCD > gen to define new channel addresses for the controller, as in FD50,3 and > FE50,3?
The TCP/IP stack and the VSWITCH must use different subchannels. If you try to use the same ones, whoever is activated last will fail. Think of it like DASD: If it's attached to SYSTEM, it can't be attached to a user. (Note that "SYSTEM" is the owner of a VSWITCH.) One teeny tiny note about sharing a port with a VSWITCH: If you decide to implement VLANs on the VSWITCH and change the physical switch port to a trunk, everyone using that port must be VLAN-aware. You can't mix VLAN-aware and VLAN-unaware traffic on the same port. (Well, you might be able to in some cases, but you might also be unpleasantly surprised at the result.) Alan Altmark z/VM Development IBM Endicott ---------------------------------------------------------------------- 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
