Yes I have seen it, and I don't understand what the VIOS developers
specifically put that landmine into the defaults for you to step on. It's
like they enjoy the support call and hearing the pain on the other end of
the line.
I've gotten by it by always setting the LSO when I configure the SEA. On
the HMC (even the new interface surprisingly) it's easy to do, then the
problem does not bite later.
--
Jim Oberholtzer
Agile Technology Architects
-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Mitchell, Dana
Sent: Friday, August 24, 2018 2:13 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: LSO and VIOS SEA mismatch
I just completed another migration from p8->p9 and ran into this problem
again. Newly created SEAs on dual VIOs default to Largesend=0. When the
I LPARs come up they default to Largesend turned on. This mismatch causes
dropped packets that results in sessions hanging randomly and being
generally unusable. Largesend can be disabled on the IBMi side with some
SST gyrations, but only lasts for the current IPL, after re-IPL it goes
back. LSO can be turned on the SEA with VIOS command that should be
relatively permanent. Currently 7.2 TR8 Vios 2.2.6.21
I'm wondering why with P9 the mismatch happens? Anybody else run into this?
Dana
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