P Ingress - RACOM RAy3-11 User Manual

Configuration

5.5.3.2. 802.1p ingress

The IEEE 802.1p QoS technique also known as class of service (CoS), is using a 3-bit field called the
Priority Code Point (PCP) within an Ethernet frame header when using VLAN tagged frames as defined
by IEEE 802.1Q. It specifies a priority value of between 0 and 7 inclusive that can be used by QoS
disciplines to differentiate traffic. The value 0 is generally taken as the lowest priority and 7 as the
highest priority.
Fig. 5.26: Menu Switch settings > QoS > 802.1p ingress
Priority code point (PCP)
Priority Code Point (PCP) value to which the following parameters (Yellow, Frame Enable, Frame
Priority, Queue Enable and Queue Priority) belong to.
802.1p yellow
When this parameter is enabled any IEEE tagged frame (having given PCP priority) that accesses
this port will be given an initial IEEE color of Yellow. This color will be assigned to the frame using
the same rules used to select the frame's initial FPri and QPri values.
Enable 802.1p frame priority
When the Frame Enable parameter is checked, the Frame Priority (FPri) mapping is enabled.
802.1p frame priority
The Frame Priority value is taken as the frame's initial IEEE FPri in case the Frame Enable is
checked.
Enable 802.1p queue priority
When the Queue Enable parameter is checked, the Queue Priority (QPri) mapping is enabled.
802.1p queue priority
The Queue Priority value is taken as the frame's initial IEEE QPri in case the Queue Enable is
checked.
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