Applying The Qos Policy Globally; Applying The Qos Policy To A Control Plane - HP FlexFabric 5700 series Configuration Manual

Step
1. Enter system view.
2. Apply the QoS policy to
VLANs.

Applying the QoS policy globally

You can apply a QoS policy globally to the inbound or outbound direction of all ports.
To apply the QoS policy globally:
Step
1. Enter system view.
2. Apply the QoS policy
globally.

Applying the QoS policy to a control plane

A switch provides the data plane and the control plane.
Data plane—The units (such as various dedicated forwarding chips) at the data plane are
•
responsible for receiving, transmitting, and switching (forwarding) packets. They deliver super
processing speeds and throughput.
Control plane—The units (such as CPUs) at the control plane are processing units running most
•
routing and switching protocols. They are responsible for protocol packet resolution and calculation.
Compared with data plane units, the control plane units allow for great packet processing flexibility
but have lower throughput.
When the data plane receives packets that it cannot recognize or process, it transmits them to the control
plane. If the transmission rate exceeds the processing capability of the control plane, the control plane
will be busy handling undesired packets and fail to handle legitimate packets correctly or timely. As a
result, protocol performance is affected.
To address this problem, apply a QoS policy to the control plane to take QoS actions, such as traffic
filtering or rate limiting, on inbound traffic. This ensures that the control plane can correctly receive,
transmit, and process packets.
By default, the switch is configured with predefined control plane QoS policies, which take effect on the
control planes by default. A predefined control plane QoS policy uses the protocol type or protocol
group type to identify the type of packets sent to the control plane. You can use protocol types or protocol
group types in if-match commands in traffic class view for traffic classification. Then you can reconfigure
traffic behaviors for these traffic classes as required. You can use the display qos policy control-plane
pre-defined command to display predefined control plane QoS policies.
Configuration guidelines
If a QoS policy applied to the control plane uses if-match control-plane protocol-group or if-match
control-plane protocol for traffic classification in a class, the action in the associated traffic behavior can
only be car or the combination of car and accounting packet, and only the cir keyword in the car action
can be applied normally.
Command
system-view
qos vlan-policy policy-name vlan
vlan-id-list { inbound | outbound }
Command
system-view
qos apply policy policy-name global
{ inbound | outbound }
23
Remarks
N/A
By default, no QoS policy is applied
to a VLAN.
Remarks
N/A
By default, no QoS policy is applied
globally.