<group title="OpenFlow Rate Limiting">
<column name="controller_rate_limit">
- <p>The maximum rate at which packets in unknown flows will be
- forwarded to the OpenFlow controller, in packets per second. This
- feature prevents a single bridge from overwhelming the controller.
- If not specified, the default is implementation-specific.</p>
- <p>In addition, when a high rate triggers rate-limiting, Open
- vSwitch queues controller packets for each port and transmits
- them to the controller at the configured rate. The number of
- queued packets is limited by
- the <ref column="controller_burst_limit"/> value. The packet
- queue is shared fairly among the ports on a bridge.</p><p>Open
- vSwitch maintains two such packet rate-limiters per bridge.
- One of these applies to packets sent up to the controller
- because they do not correspond to any flow. The other applies
- to packets sent up to the controller by request through flow
- actions. When both rate-limiters are filled with packets, the
- actual rate that packets are sent to the controller is up to
- twice the specified rate.</p>
+ <p>
+ The maximum rate at which the switch will forward packets to the
+ OpenFlow controller, in packets per second. This feature prevents a
+ single bridge from overwhelming the controller. If not specified,
+ the default is implementation-specific.
+ </p>
+
+ <p>
+ In addition, when a high rate triggers rate-limiting, Open vSwitch
+ queues controller packets for each port and transmits them to the
+ controller at the configured rate. The <ref
+ column="controller_burst_limit"/> value limits the number of queued
+ packets. Ports on a bridge share the packet queue fairly.
+ </p>
+
+ <p>
+ Open vSwitch maintains two such packet rate-limiters per bridge: one
+ for packets sent up to the controller because they do not correspond
+ to any flow, and the other for packets sent up to the controller by
+ request through flow actions. When both rate-limiters are filled with
+ packets, the actual rate that packets are sent to the controller is
+ up to twice the specified rate.
+ </p>
</column>
<column name="controller_burst_limit">