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7. Quality of Service (QoS) QoS Flows
136
AlliedView NMS Administration Guide
QoS Policy Action - A QoS policy action is specifically for a Rapier or Switchblade device. It involves actions that apply to
all flows on the port.
QoS Policy Flow - A QoS flow refers to a substream of packets on a port that satisfies a set of classification conditions.
For example, a stream of packets classified by the condition that their destination TCP port is 80 (i.e., TCPDPORT=80) is
considered a QoS flow.
QoS Priority Action - A QoS priority action prioritizes a QoS policy flow according to the 802.1 VLAN priority fields or
the IP DSCP/TOS fields.
QoS Traffic Action - A QoS traffic action refers to policing or conditioning of a flow, such as limiting the maximum
bandwidth or guaranteeing a minimum bandwidth.
QoS Policy Rule - A QoS policy rule is the association of a flow, priority action, and traffic action. To apply traffic
conditioning to aggregate flows where the individual flows have different priorities, multiple flow-priority pairs can be
entered with a single traffic action.
Note: The NMS will only allow traffic conditioning on multiple flows if all of the target device classes specified support this capability.
QoS Policy - A QoS policy is the result of combining the QoS policy rules into a set so that, taken as a whole, it can be
applied to a port or set of ports.
To create a QoS policy, you create the attributes of the policy and then associate them together to create the policy. For a
detailed discussion of traffic attributes and classifier management, see the Software Reference for iMAP Series Switches and
Software Reference for SwitchBlade x3100 Series user guides.
7.2 QoS Flows
To create a QoS flow:
1. In the Network Objects panel, go to Network Service Data > QoS Policies. This enables the Network Services menu
item.
2. Go to Network Services > QoS > Packet Flow. The QoS Packet Flow box appears.
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