Administrator Guide

OpenFlow 1687
17 The switch supports flow aging. The switch checks the flow install time
and idle time every 30 seconds. If either of the timers exceeds the
configured values for the flow, the switch deletes the flow. For hardware
tables that do not support flow statistics, the switch does not support the
idle timeout.
OpenFlow 1.0 Supported Flow Match Criteria, Actions and Status
The Dell EMC Networking OpenFlow Hybrid switch supports a limited set of
match criteria and actions. This section defines which match criteria and flow
actions are supported in each hardware table.
Dell EMC Networking OpenFlow Hybrid adds flows into one of the following
hardware tables: the VLAN Field Processor or the Ingress Field Processor. The
Ingress Field Processor is subdivided into two different hardware tables: the
"MAC Forwarding Table" and the "OpenFlow 1.0 Rule Table". The hardware
table to which the flow is added depends on the flow table identifier specified
in the OFPT_FLOW_MOD message.
The flows are added, modified, and removed using the OFPT_FLOW_MOD
message. The OFPT_FLOW_MOD message is handled by the Open vSwitch
layer and the resulting flow modification commands are passed to Dell EMC
Networking OpenFlow Hybrid using the ofproto_class interface.
Dell EMC Networking OpenFlow Hybrid enables the OpenFlow 1.0
Controller to add flows to different tables by making use of the most
significant byte in the command field in the OFPT_FLOW_MOD message.
If this byte is 0, the flow is added to the default table configured by the
administrator. If the byte is not zero, the flow is added to the flow table
specified in Table 48-2.
The following table identifiers are mapped to the listed hardware tables. The
table identifiers are not contiguous because some identifiers are reserved for
future enhancements. The supported hardware table IDs, sizes, and
descriptions are accessible through the switch user interface.