Your explanation is how I understood it. VLAN defvid makes the switch capable of supporting VLAN PORTT determines if the guest is or is not VLAN aware.
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:[email protected]] On Behalf Of Alan Altmark Sent: Thursday, January 08, 2009 2:14 PM To: [email protected] Subject: Re: Ethernet vswitch definition On Thursday, 01/08/2009 at 01:38 EST, "Bauer, Bobby (NIH/CIT) [E]" <[email protected]> wrote: > Define vswitch zvm1 rdev 0c60 0c70 VLAN 4000 PORTT TRUNK ETH By the way, "PORTTYPE TRUNK" sets the default *virtual* porttype on the SET/MODIFY VSWITCH GRANT command. It has no bearing on the physical port type. Unless a guest needs to access more than one VLAN on the VSWITCH, it should be given PORTTYPE ACCESS on the GRANT. (I regret that we put PORTTYPE on DEFINE VSWITCH. It was meant to be be helpful, but it has caused more problems than it has solved. Granting access to a single VLAN should have resulted in virtual access port; more than VLAN, a virtual trunk. Sigh.) Alan Altmark z/VM Development IBM Endicott
