Cisco 300 Series Administration Guide

Quality of Service
Configuring QoS - General
Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 496
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By changing the CoS/802.1p to Queue mapping (CoS/802.1p to Queue) and the
Queue schedule method and bandwidth allocation (Queue page), it is possible to
achieve the desired quality of service in a network.
The CoS/802.1p to Queue mapping is applicable only if one of the following exists:
• The device is in QoS Basic mode and CoS/802.1p trusted mode
• The device is in QoS Advanced mode and the packets belong to flows that
are CoS/802.1p trusted
Queue 1 has the lowest priority, queue 4 or 8 has the highest priority.
To map CoS values to egress queues:
STEP 1 Click Quality of Service > General > CoS/802.1p to Queue.
STEP 2 Enter the parameters.
• 802.1p—Displays the 802.1p priority tag values to be assigned to an egress
queue, where 0 is the lowest and 7 is the highest priority.
• Output Queue—Select the egress queue to which the 802.1p priority is
mapped. Either four or eight egress queues are supported, where Queue 4
or Queue 8 is the highest priority egress queue and Queue1 is the lowest
priority.
STEP 3 For each 802.1p priority, select the Output Queue to which it is mapped.
STEP 4 Click Apply. 801.1p priority values to queues are mapped, and the Running
Configuration file is updated.
43 Video
5 4 Voice - Cisco IP phone
default
64 Interwork Control - LVS
phone RTP
74 Network Control
802.1p
Values
(0-7, 7 being
the highest)
Queue
(4 queues 1-
4, 4 being the
highest
priority)
Notes

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