OSA 3 cards are funny in the way they activate a port, the best I can tell is you define the CHPID, CONTROL UNIT, and DECIVICES without regard for the specific port. The Port is determined by the TCPIP Device and Link statement or the VSWITCH RDEV statement. Your question is difficult to answer it is totally dependent on the Switch it is connected to. If you make sure the switch port your OSA is connected to is actually defined as a "switchport" then your OSA will tell the switch what IP or MAC addresses it has and the switch will tell others in the network. If you want to use ARP Takeover then connect two OSA3 Ports, on separate CHPID's, to separate switch ports. And define an RDEV address and port, for each OSA port, on the VSWITCH define statement.
Larry Davis From: The IBM z/VM Operating System [mailto:IBMVM@LISTSERV.UARK.EDU] On Behalf Of Lemuel Raciles Deza Sent: Friday, July 15, 2011 7:54 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: z/VM network setup Hi to all, We're soon to be a z/VM shop with LINUX as guests. We are looking to implement VSWITCH layer2 support using OSA3. Is it recommended to share the VSWITCH OSA with the TCPIP stack or use separate OSAs. Must they belong to the same subnet or network? What would be the recommended best practices design for z/VM network? All the help appreciated. Warm regards, Lemuel Deza ************************************************************************************************************************************ This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Please note that any views or opinions presented in this email are solely those of the author and do not necessarily represent those of Riyad Bank. Finally, the recipient should check this email and any attachments for the presence of any viruses. Riyad Bank accepts no liability for any damage caused by any virus / error transmitted by this email. ************************************************************************************************************************************
