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3.1.14.6 STORM POLICING
Storm policers restrict the amount of flooded frames (frames coming with SMAC which are not learnt earlier) entering the
device. The configurations are global per-device and not per-port. Storm policers can be applied separately on Unicast,
Multicast, or Broadcast packets.
It is also possible to configure per-port storm policers. Port storm policers can be applied separately on Unicast,
Broadcast, and flooded (unknown) packets.
3.1.14.7 INGRESS MAP
An Ingress Map is a mapping table created to classify values at ingress such as, CoS, DPL, PCP, DEI, DSCP, and CoSID based
on the key values in the packet (PCP, PCP/DEI, DSCP, or PCP/DEI/DSCP).
In order to use an Ingress Map, it must first be created and configured. Configuration consists of the following
parameters:
•
Key: Which part of the packet to use for lookup.
•
Actions: Which kinds of values to classify.
•
Mappings: The actual value to use for classification for each value of the key.
A specific Ingress Map can be associated with one or more ports, QCEs, or EVCs/ECEs. Using an Ingress Map will always
take precedence over other kinds of port-based classification.
3.1.14.8 EGRESS MAP
An Egress Map is a mapping table created to control the rewriting of packets at egress. Values such as PCP, DEI, and DSCP
can be updated based on the classified key values (CoSID, CoSID/DPL, DSCP, or DSCP/DPL).
In order to use an Egress Map, it must first be created and configured. Configuration consists of the following parameters:
•
Key: This classified value(s) to use for lookup.
•
Actions: Which kinds of values to rewrite in the packet.
•
Mappings: The actual value to use for rewriting for each value of the key. A specific Egress Map can be associated
with one or more ports or EVCs.
Configuration Examples
In the following sections, web interface and ICLI configuration examples are given according to the different QoS
classifications.
Note:
It is recommended to do a restore to default before starting to configure any of the examples in the following
sections.
# reload defaults
#
Basic QoS: Port Classification
Basic QoS classification configuration can be done per port. Ingress traffic coming on each port can be assigned
to a CoS, DPL, PCP, and DEI.
Example
: All traffic coming on Port 1 is mapped to CoS 2, and PCP is set as 1.
Configuring Basic QoS Classification Using WebGUI
To configure all traffic coming on Port 1 is mapped to CoS 2 and PCP is set as 1, perform the following step.
•
Click
Configuration
>
QoS
>
Port Classification
, and enter the settings as shown in the following illustration.
Set Up CoS and PCP for Ingress Traffic