Cisco 300 Series Administration Guide

Quality of Service
Configuring QoS - General
497 Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version)
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Mapping DSCP to Queue
The DSCP (IP Differentiated Services Code Point) to Queue page maps DSCP
values to egress queues. The DSCP to Queue Table determines the egress
queues of the incoming IP packets based on their DSCP values. The original VPT
(VLAN Priority Tag) of the packet is unchanged.
By simply changing the DSCP to Queue mapping and the Queue schedule method
and bandwidth allocation, it is possible to achieve the desired quality of services
in a network.
The DSCP to Queue mapping is applicable to IP packets if:
• The device is in QoS Basic mode and DSCP is the trusted mode, or
• The device is in QoS Advanced mode and the packets belongs to flows that
is DSCP trusted
Non-IP packets are always classified to the best-effort queue.

Cisco 300 Series Specifications

General

Model	Cisco 300 Series
Category	Switch
Dimensions	Varies by model
Weight	Varies by model
Power over Ethernet (PoE)	Available on select models
Management	Web-based GUI, SNMP, CLI
VLANs	Up to 256
Security Features	ACLs, 802.1X, Port Security
Humidity	10% to 90% non-condensing
Ports	8, 16, 24, 48