Dennis Musselwhite <[EMAIL PROTECTED]> wrote: >From William P. Scully:
>> As you might expect, we at Computer Associates run more than one z/VM >> node, and z/VM on more than one physical processor. We have embraced >> using Virtual Switch technology for all the good reasons that Alan >> Altmark (and others) have outlined here and at SHARE. Recently we >> noticed something odd. Check out the virtual MAC addresses on the >> (edited) response from CP QUERY VSWITCH INTRANET DETAILS, from two >> different z/VM systems on two different processors: >As David Boyes alread noted, you will want to setup SYSTEM CONFIG with a >unique MACPREFIX for each system (that includes any second level systems >you might run... if you plan to connect them into the same broadcast domain >with first level systems). This is an option on the VMLAN statement. >Regarding the concern about using vendor-specific prefix values, note that >our syntax only permits you to use a prefix of 020000 - 02FFFF (The 0x02 >bit makes it clear to your network folks that this is a >locally-administered address... NOT a universally-administered address like >the ones burned into your network cards). Note that 3com has a very popular line of ethernet cards with the 02608C prefix. It might be that there aren't so many left in use, many were ISA cards. I believe it was assigned before the global/local bit was assigned. There are a few other 02.... assignments, but not near as popular as 3com. I have used many 02608C cards. -- glen ---------------------------------------------------------------------- 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
