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Cisco IE 3010 Switch Software Configuration Guide
OL-23145-01
Chapter 33 Configuring QoS
Configuring Auto-QoS
You use auto-QoS commands to identify ports connected to Cisco IP Phones and to devices running the
Cisco SoftPhone application. You also use the commands to identify ports that receive trusted traffic
through an uplink. Auto-QoS then performs these functions:
• Detects the presence or absence of Cisco IP Phones
• Configures QoS classification
• Configures egress queues
These sections contain this configuration information:
• Generated Auto-QoS Configuration, page 33-19
• Effects of Auto-QoS on the Configuration, page 33-24
• Auto-QoS Configuration Guidelines, page 33-24
• Enabling Auto-QoS for VoIP, page 33-25
• Auto-QoS Configuration Example, page 33-27
Generated Auto-QoS Configuration
By default, auto-QoS is disabled on all ports.
When auto-QoS is enabled, it uses the ingress packet label to categorize traffic, to assign packet labels,
and to configure the ingress and egress queues as shown in
Table 33-2.
Table 33-3 shows the generated auto-QoS configuration for the ingress queues.
Table 33-2 Traffic Types, Packet Labels, and Queues
VoIP
1
Data
Traffic
1. VoIP = voice over IP
VoIP Control
Traffic
Routing Protocol
Traffic
STP BPDU
Traffic
Real-Time
Video Traffic All Other Traffic
DSCP 46 24, 26 48 56 34 –
CoS 5 3 6 7 4 –
CoS-to-Ingress
Queue Map
2, 3, 4, 5, 6, 7 (queue 2) 0, 1 (queue 1)
CoS-to-Egress
Queue Map
5 (queue 1) 3, 6, 7 (queue 2) 4 (queue 3) 2 (queue 3) 0, 1
(queue 4)
Table 33-3 Auto-QoS Configuration for the Ingress Queues
Ingress Queue Queue Number CoS-to-Queue Map
Queue Weight
(Bandwidth)
Queue (Buffer)
Size
SRR shared 1 0, 1 81 percent 67 percent
Priority 2 2, 3, 4, 5, 6, 7 19 percent 33 percent
