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Enabling "TRUE LOAD BALANCING" for SEAs in dual VIOS setup
Currently in a dual virtual I/O server setup with SEA load sharing configured, each SEA is configured with more than one underlying virtual trunk Ethernet adapter. During the handshaking phase b/w the virtual I/O servers for establishing load sharing, each of the SEA (priority=1 & priority=2) would own half of the number of trunk adapters and would start bridging the traffic for VLANs mentioned within. The distribution of trunk adapters b/w SEAs is all dynamic (understand that may even change during next managed system power recycle) with no manual control. On one hand this offers a touch less operation and on the other takes away the control an administrator would want to have over distribution of VLANs based on his understanding of bandwidth requirements / usage.
In a typical DC environment there would be couple of VLANs (production, backup, management, admin.....) Each of the VLAN would have different bandwidth requirements and overlapped bridging via same VIOS may result into limited network capability / resources, while the other VIOS might still carry enough unused bandwidth (as might be bridging only low bandwidth VLANs). While the name is load sharing, this may actually not result into true load sharing.
The enhancement requested is to allow an administrator to have control to create affinity for specific TRUNK adapter association with a VIOS, i.e non default control over VLAN distribution. The default behavior for load sharing may continue as is, for those who may not wish to leverage this new enhancement.
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