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Querying flow tables by using a basic query, Querying flow tables by using an advanced query, Managing flow entries – H3C Technologies H3C Intelligent Management Center User Manual

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{

DPID—DPID of the OpenFlow instance to which the flow table belongs. A DPID uniquely

identifies an OpenFlow instance. Click the DPID to view detailed information about the
OpenFlow instance. For more information about OpenFlow instance details, see "

Managing an

OpenFlow instance on the OpenFlow instance details page

."

Querying flow tables by using a basic query

1.

Access the flow table list page.

2.

In the query box on the top right of the flow table list area, enter a complete table ID.

3.

Click the Query icon

.

The flow table list displays all flow tables that match the query criterion.

Querying flow tables by using an advanced query

1.

Access the flow table list page.

2.

Click the Advanced icon

on the top right of the flow table list area to expand the query area.

3.

Specify one or more of the following query criteria:

{

Table ID—Enter a complete flow table ID.

{

Controller—Select a controller device label from the list.

{

DPID—Enter a partial or complete DPID.

Empty fields are ignored.

4.

Click Query.
The flow table list displays all flow tables that match the query criteria.

5.

Click Reset.
The flow entry list displays all flow tables.

Managing flow entries

OpenFlow uses flow entries to match and process packets.

Figure 23

shows the main components of a

flow entry.

Figure 23 Main flow entry components

For more information about the flow entry components, referenced in

Figure 23

, see version 1.3.1 of the

Open Networking Foundation "OpenFlow Switch Specification" located at:

https://www.opennetworking.org/images/stories/downloads/sdn-resources/onf-specifications/open

flow/openflow-spec-v1.3.1.pdf

In a flow table, a flow entry is uniquely identified by its match fields and priority. A table-miss flow entry's

match fields are omitted, and its priority is 0. In a flow table, the fields of a packet are matched against

the match fields of flow entries in order of priority. If the packet matches a flow entry, the instruction set
of the flow entry is executed on the packet.