Hopefully there are some network gurus on IBM-MAIN.
We have an LPAR that has two OSA Express6 cards (latest cards with a
z15) defined. Both interfaces are defined in the TCPIP Profile data
set. We also have a VIPA address defined. The PRIMARYINTERFACE is set
to the VIPA address. The START for one of the cards is commented out.
As such, the LPAR uses the card that was started at IPL time and the
other one is inactive (CARD1 is active, CARD2 is inactive since there is
no START for it). All traffic goes through the single OSA at this
point. The IPCONFIG statement has NOMULTIPATH.
We want to get to an ACTIVE/STANDBY configuration such that both cards
are STARTED but all inbound and outbound traffic goes through CARD1 and
CARD2 is doing nothing (so if CARD1 fails, CARD2 takes over). We also
use CISCO's ACI so we experience the "flapping" issue with both cards
ACTIVE/ACTIVE and MULTIPATH active (hopefully ACI is going away soon).
If we start the second card, we see traffic going through both cards
(which causes ACI a little heartburn).
How do we achieve our goal? Keep in mind I'm not a network guy.
Here's some of the config statements in the TCPIP profile if that helps.
IPCONFIG
SEGMENTATIONOFFLOAD CHECKSUMOFFLOAD
QDIOACCELERATOR QDIOPRIORITY 1
PATHMTUDISCOVERY
IGNOREREDIRECT
NODATAGRAMFWD
NOMULTIPATH
SOURCEVIPA
SYSPLEXROUTING
DYNAMICXCF ZZZ.ZZZ.ZZZ.ZZZ 255.255.255.0 1
INTERFACE LINK0506
DEFINE IPAQENET
PORTNAME DEV0500
INBPERF DYNAMIC WORKLOADQ
IPADDR XX.XXX.XXX.XXX/24
VLANID 108
VMAC ROUTEALL
MTU 1492
SOURCEVIPAINT VIPAL06
INTERFACE LINK0906
DEFINE IPAQENET
PORTNAME DEV0900
INBPERF DYNAMIC WORKLOADQ
IPADDR XX.XXX.XXX.YYY/24
VLANID 108
VMAC ROUTEALL
MTU 1492
SOURCEVIPAINT VIPAL06
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