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Priority mapping configuration
Priority mapping overview
When a packet arrives, an AC assigns a set of QoS priority parameters to the packet
based on a certain priority field carried in the packet or the port priority of the incoming
port depending on your configuration. This process is called priority mapping. The set of
QoS priority parameters decides the scheduling priority and forwarding priority of the
packet.
Priority mapping is implemented with priority mapping tables and involves priorities
including 802.11e priority, 802.1p priority, DSCP, and local precedence on the H3C WX
series access controllers.
Local precedence is assigned by the AC and is of only local significance. Local
precedence is used for queuing. A local precedence value corresponds to an output
queue. A packet with higher local precedence is assigned to a higher priority output
queue to be preferentially scheduled.
Priority mapping tables
The AC provides various priority mapping tables, or rather, priority mappings. By looking
up a priority mapping table, the AC decides which priority value is to assign to a packet
for subsequent packet processing.
The default priority mapping tables are available for priority mapping. They are sufficient
in most cases. If a default priority mapping table cannot meet your requirements, you
can modify the priority mapping table as needed.
NOTE:
For the default
dot11e-lp
priority mapping table, an input value yields a target value that is equal
to it.
The default priority mapping tables are as follows:
