Are the administration and production networks connected to 1 physical switch over 1 OSA port? David Kreuter
________________________________ From: The IBM z/VM Operating System on behalf of KEETON Dave * SDC Sent: Thu 1/8/2009 6:09 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: [IBMVM] Ethernet vswitch definition I have need for multiple VLAN memberships also. I keep running into issues with routing when I have more than one VLAN configured. Does anyone have any pearls of wisdom in this area? Any docs for advanced VLAN networking with VSWITCH under z/VM 5.4? Scenario: If you had an environment that consisted of Administration, Production networks and you wanted a guest to participate in both, wouldn't you just create two VLAN memberships to eth0 (ala vconfig)? Or would it be prudent to create a separate VSWITCH for Administration and Production and use eth0 and eth1 nics (using the PORTTYPE ACCESS method)? Any thoughts would be greatly appreciated. Thanks, Dave -----Original Message----- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Bauer, Bobby (NIH/CIT) [E] Sent: Thursday, January 08, 2009 11:39 AM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: Ethernet vswitch definition Always glad to have someone looking over my shoulder. We do have requirements for access to various VLANs. Bobby Bauer Center for Information Technology National Institutes of Health Bethesda, MD 20892-5628 301-594-7474 -----Original Message----- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Alan Altmark Sent: Thursday, January 08, 2009 2:37 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: Ethernet vswitch definition On Thursday, 01/08/2009 at 02:30 EST, "Bauer, Bobby (NIH/CIT) [E]" <baue...@mail.nih.gov> wrote: > Your explanation is how I understood it. Good. > VLAN defvid makes the switch capable of supporting VLAN ...and it sets the default VLAN authorization for the GRANT. > PORTT determines if the guest is or is not VLAN aware. Some people have been creating VLAN-aware guests that only access a single VLAN (on a particular VSWITCH), wasting cycles. I just want to be sure you aren't falling into that trap. Alan Altmark z/VM Development IBM Endicott
