Mapping Ip Precedence To Queue; Mapping Dscp To Queue - Cisco SF220-24 Administration Manual

Quality of Service
Workflow to Configure QoS Settings
STEP 1
STEP 2
STEP 3
STEP 4
STEP 1
STEP 2
Cisco 220 Series Smart Switches Administration Guide Release 1.1.0.x

Mapping IP Precedence to Queue

To map IP precedence to egress queue:
Click Quality of Service > General > IP Precedence to Queue.
Select the egress queue to which the IP precedence is mapped. Eight egress
queues are supported, where queue 8 is the highest priority egress queue and
queue 1 is the lowest priority egress queue.
Click Apply. IP precedence values to queues are mapped, and the Running
Configuration is updated.
Click Restore Defaults to restore the IP Precedence to Queue mappings to
factory defaults.

Mapping DSCP to Queue

Use the DSCP to Queue page to map IP DSCP to egress queues. The DSCP to
Queue table determines the egress queues of the incoming IP packets based on
their DSCP values. The original VLAN Priority Tag (VPT) of the packet is
unchanged.
It is possible to achieve the desired QoS in a network by simply changing the
DSCP to Queue mapping, the queue schedule method, and bandwidth allocation.
The DSCP to Queue mapping is applicable to IP packets if one of the following
exists:
• The switch is in QoS basic mode and DSCP is the trusted mode.
• The switch is in QoS advanced mode and the packets belong to flows that
are DSCP trusted.
Non-IP packets are always classified to the best-effort queue.
To map DSCP values to queues:
Click Quality of Service > General > DSCP to Queue.
The Ingress DSCP column displays the DSCP value in the incoming packet and its
associated class.
Select the traffic forwarding queue from the Output Queue drop-down menu to
which the DSCP value is mapped.
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