Meter table
Meters enable OpenFlow to implement various simple QoS operations, such as rate-limiting. A group table contains meter entries.
Figure 5: Meter entry components
A meter entry contains the following fields:
Meter Identifier—A 32 bit unsigned integer uniquely identifying the meter.
Meter Bands—Each meter can have one or more meter bands. Each band specifies the rate at which the band applies and the way packets should be processed. If the current rate of packets exceeds the rate of multiple bands, the band with the highest configured rate is used.
Counters—Updated when packets are processed by a meter.
Figure 6: Band components
A meter band contains:
Band Type—Packet processing methods. Packets that exceed the band rate are dropped.
Rate—Defines the lowest rate at which the band can apply.
Counters—Updated when packets are processed by a band.
Type Specific Arguments—Some band types have optional arguments.