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  3. August 2015

Re: Virtual Ethernet between IBM i LPARs

We tend to not use virtual ethernet in between our lpars because of H/A
switching and whatnot.

let's say you have PROD1 and DEV1 as lpars on RACK1. And you have PROD2
and DEV2 as lpars on RACK2. If we do a H/A switch from PROD1 to PROD2 and
DEV1 tries to talk to the generic PROD (which gets switched between PROD1
and PROD2) it really complicates the process when you toss in virtual
ethernet.
Our interlpar traffic doesn't even come close to taxing the local LAN
switch. The speed doesn't justify it. And since the subnet doesn't leave
the machine room it's not like it brings extra security to the picture. At
least any security we can count on if we do a switch to the other machine.

IOW, we wouldn't bother with the intermediate step of setting up virtual
when we're going to need the other anyway.
Hey, but to each their own.


Rob Berendt

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