EtherHaul Operation, Administration and Maintenance Manual
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9.2
Default QoS Configuration
The default QoS configuration is classification of traffic coming from all ports based on
Priority Code Point (PCP, or pBit).
Any traffic coming with pBit 0 will be classified to queue number 0 (CoS 0, lowest
priority), traffic coming with pBit 1 will be classified to queue number 1 (CoS 1) and so
one till CoS 7 (highest priority).
9.3
QoS Classification
The EtherHaul QoS Engine classifies the incoming packets by port, VID, PCP, and/or
DSCP (as defined by the IEEE 802.1 Q/p and RFC-2475 standards), packet type (unicast,
non-unicast or all) or alternatively MPLS EXP bit, and maps them onto {EVC, CoS} pairs.
The classification fields of VID, PCP, and DSCP/MPLS-Exp represent the CoS that
determine the egress queue. Classification based on EVC forwards the packets through
the meter and the marker.
9.3.1
Port Priority
Port priority means that all traffic of the selected ports will be assigned with highest
priority (CoS 7), regardless of other classification rules.
When configuring port priority for specific ports, classifier rule is created with the
highest precedence (precedence 1).
Figure 9-3 Advanced Config Page: Quality of Service
– Port Priority
9.3.2
Classification Criteria
Figure 9-4 Advanced Config Page: Quality of Service
– Classification Criteria
