H3C Technologies H3C S12500 Series Switches - Manual (Page 10)

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An activated OpenFlow instance need be reactivated when any of the OpenFlow instance configurations
is changed.
After reactivation, the OpenFlow instance is disconnected from all controllers and then reconnected to
them.
OpenFlow instance port
An OpenFlow instance sends information about following ports to the controller:
• Physical ports.
• Logical ports.
• Reserved ports of the local type.
In loosen mode, a port belongs to the OpenFlow instance when VLANs associated with the OpenFlow
instance overlap with the port's allowed VLANs. Otherwise, a port belongs to an OpenFlow instance
only when VLANs associated with the OpenFlow instance are within the port's allowed VLAN list.
OpenFlow flow table
IMPORTANT:
An S12500 switch supports only one extensibility flow table for an OpenFlow instance, and does not
support the MAC-IP flow table in the current software version.
An OpenFlow switch matches packets against one or more flow tables. A flow table contains flow entries,
and packets are matched based on the matching precedence of flow entries.
OpenFlow flow tables include the following types:
• MAC-IP—Combines the MAC address table and FIB table.
A MAC-IP flow table provides the following match fields:
{
Destination MAC address.
{
VLAN.
{
Destination IP address.
A MAC-IP flow table provides the following actions:
{
Modifying the destination MAC address.
{
Modifying the source MAC address.
{
Modifying the VLAN.
{
Specifying the output port.
• Extensibility—Provides more match fields and actions than a MAC-IP flow table, such as destination
MAC address, destination IP address, VLAN priority, TCP source port, and TCP destination port.
Flow entry
Figure 2 Flow entry components
A flow entry contains the following fields:
• Match fields—Matching rules of the flow entry. These contains the ingress port and the packet
headers.