Cisco WS-C3560-48PS-S Software Configuration Manual page 541

Chapter 28 Configuring QoS
Table 28-2 Traffic Types, Ingress Packet Labels, Assigned Packet Labels, and Queues (continued)
VoIP Data
Traffic
Assigned DSCP 46
Assigned CoS 5
CoS-to-Ingress
Queue Map
CoS-to-Egress 5 (queue 1)
Queue Map
Table 28-3
Table 28-3 Auto-QoS Configuration for the Ingress Queues
Ingress Queue
SRR shared
Priority
Table 28-4
Table 28-4 Auto-QoS Configuration for the Egress Queues
Egress Queue
Priority (shaped)
SRR shared
SRR shared
SRR shared
When you enable the auto-QoS feature on the first port, these automatic actions occur:
•
•
78-16156-01
VoIP Control
Traffic
26
3
2, 3, 4, 5, 6, 7 (queue 2)
shows the generated auto-QoS configuration for the ingress queues.
Queue Number
1
2
shows the generated auto-QoS configuration for the egress queues.
Queue Number
1
2
3
4
QoS is globally enabled (mls qos global configuration command), and other global configuration
commands are added.
When you enter the auto qos voip cisco-phone interface configuration command on a port at the
edge of the network that is connected to a Cisco IP Phone, the switch enables the trusted boundary
feature. The switch uses the Cisco Discovery Protocol (CDP) to detect the presence or absence of a
Cisco IP Phone. When a Cisco IP Phone is detected, the ingress classification on the port is set to
trust the QoS label received in the packet. When a Cisco IP Phone is absent, the ingress classification
is set to not trust the QoS label in the packet. The switch configures ingress and egress queues on
the port according to the settings in
Routing Protocol STP BPDU
Traffic Traffic
48 56
6 7
3, 6, 7 (queue 2)
Queue Weight
CoS-to-Queue Map (Bandwidth)
0, 1 90 percent
2, 3, 4, 5, 6, 7 10 percent
Queue Weight
CoS-to-Queue Map (Bandwidth)
5 10 percent
3, 6, 7 10 percent
2, 4 60 percent
0, 1 20 percent
Table 28-3 and Table 28-4.
Catalyst 3560 Switch Software Configuration Guide
Configuring Auto-QoS
All Other Traffic
0
0
0, 1 (queue 1)
2, 4 0, 1
(queue 3) (queue 4)
Queue (Buffer)
Size
90 percent
10 percent
Queue (Buffer)
Size
20 percent
20 percent
20 percent
40 percent
28-19