I'm studying the picture on page 161 of the OSA-Express Implementation
Guide
http://publib-b.boulder.ibm.com/Redbooks.nsf/9445fa5b416f6e32852569ae006bb65f/78796993019dfafe85256c38006f1d4e?OpenDocument&Highlight=0,osa


Right now I have a two levels of routers/firewalls in out penguin farm.
One single "master" router on the top level and four second level
routers/firewalls for each of the guest lans.  The master level router has
the OSA dedicated to it via the VM user directory.  I want to get rid of
the master level router because it does burn quite a few cycles handling
all the traffic and with the coming virtual switches in VM 4.4 (yahoo!) I
think a redesign and a re-think of our external network interface is
needed.

So, page 161 shows a picture of four Linux machines connected to a single
OSA (port).  Since the OSA supports trunking and zLinux can handle it as
well, I want to set up VLANs - like in the picture.

How do I share the OSA between four (or more) Linux guest images?   Are we
talking IODF/IOCDS changes?  Creating more CHIPDs/devices to be deicated to
each Linux?  When I read the text, the implementation doesn't jump out at
me.

Thanks,

Matt Lashley
Idaho State Controller's Office

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