Hi,
Does the switch allow the controller fills the ECMP table? In OpenFlow-enable
switch, how is ECMP table filled?
In OpenFlow 1.0 and 1.3, in Group table - Group types :
"select: Execute one bucket in the group. Packets are processed by a single
bucket in the group, based on a switch-computed selection algorithm (e.g. hash
on some user-configured tuple orsimple round robin). All configuration and
state for the selection algorithm is external to OpenFlow. The selection
algorithm should implement equal load sharing and can optionally be based on
bucket weights. When a port specified in a bucket in a select group goes down,
the switch may restrict bucket selection to the remaining set (those with
forwarding actions to live ports) instead of dropping packets destined to that
port. This behavior may reduce the disruption of a downed link or switch."
Does this mean that OpenFlow supports the hash routing?
Thanks
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