RE: Virtual Ethernet and NFS Image Catalogs

<snip>
Can you use NFS and other lpar-to-lpar Ethernet on the same interface at the
same time? IDK.
</snip>

Sure, why not?




--
Jim Oberholtzer
Agile Technology Architects

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Rob
Berendt
Sent: Wednesday, May 08, 2019 2:13 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: RE: Virtual Ethernet and NFS Image Catalogs

Virtual Ethernet has some concerns in a HA environment. Let's say you go
from DEV to PROD. Now you want to fail PROD over to PROD2 on another box.
You would then have to change the host table entry on DEV to the new IP
address. Without using virtual Ethernet you can simply change your DNS and
get all things which talk to PROD in one fell swoop. If this isn't a
concern then it isn't a concern.

I used to use NFS over virtual ethernet for PTF's. With i hosting i.
However I am switching to virtualized optical. A recent thread on this list
got me cleared up to where I can get this to work rather consistently.

I played around with NFS or virtualized optical for upgrades but I probably
will not use that as virtualized optical causes issues with you are doing
two guest lpars at the same time. Especially if one wants I_BASE and the
other one is past that.

Can you use NFS and other lpar-to-lpar Ethernet on the same interface at the
same time? IDK.

Funny thing is, the new 7.4 DB2 Mirror let me know that the ROCE cards are
faster than virtual Ethernet.

-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Kevin
Monceaux
Sent: Wednesday, May 8, 2019 2:39 PM
To: Midrange L <Midrange-L@xxxxxxxxxxxxxxxxxx>
Subject: Virtual Ethernet and NFS Image Catalogs

Midrange Fans,

I'm finally beginning work on getting our PTFs up to date. We have one host
and three guest i LPARs on a single managed system. All are running 7.2, so
NFS image catalogs are probably the way to go.

I've been exploring our virtual Ethernet setup, which was set up before I
got involved in such things. It looks like each LPAR has one virtual
Ethernet interface. As far as I can tell, they're not being used for
anything. They're not bridged to the outside world. I can ping LPAR to
LPAR using the virtual addresses. There are no host table entries for the
virtual addresses, and all our RDB directory entries point to physical
interface addresses. Their virtual LAN identifiers are set to *NONE.

Since all our LPARs are on a single box, setting the LPARs up to use virtual
Ethernet for LPAR to LPAR communications would probably be a good thing. If
I set that up, can the same virtual Ethernet interfaces be used for that and
NFS image catalogs, or do I need to add additional virtual Ethernet
interfaces? If I need to add additional virtual Ethernet interfaces for NFS
image catalogs, do they need to be on a separate subnet?