H3C Technologies H3C Intelligent Management Center - Manual (Page 32)

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3 Managing resources
An OpenFlow network includes the following resources:
• Controller—Typically a Linux server that has the controller application deployed. It controls
forwarding of OpenFlow switches and provides ports for applications to send packets.
• OpenFlow switch—A physical switch or a virtual switch running the OpenFlow protocol. An
OpenFlow switch can include one or more OpenFlow instances and forward OpenFlow traffic for
the instances at the physical network layer.
• OpenFlow instance—A virtual instance that is created on an OpenFlow switch. It operates as a
separate OpenFlow switch, includes its own flow, group, and meter tables, and forwards OpenFlow
traffic at the logical network layer.
SDNM resource management includes:
• Controller management—Manages all controllers on the OpenFlow network.
• OpenFlow management—Manages all OpenFlow switches and OpenFlow instances on the
OpenFlow network.
Managing controllers
SDNM provides the following functions:
• Query, view, and synchronize controllers.
• Manage the alert listener functions of the controllers.
Applications register alert listeners with controllers for indicating interested OpenFlow alerts. When an
OpenFlow alert is generated or received, a controller sends it to only the applications that concern this
alert, according to the alert listeners.
Viewing the controller list
1. Click the Service tab.
2. From the navigation tree, select VAN SDN Manager > OF Resource > Controller.
Controller list contents
{
Device Status—Status of the controller:
− Critical
− Major
− Minor
− Warning
− Normal
− Unknown
− Unmanaged
{
Device Label—Device label of the controller. Click the label to view detailed information about
the controller. If the controller is operating in team mode, this field includes a Team icon
.