Generated Auto-Qos Configuration - Cisco Catalyst 3750 Software Configuration Manual

Configuring Auto-QoS

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 queues and egress queue-sets as shown in
Table 26-2 Traffic Types, Ingress Packet Labels, Assigned Packet Labels, and Queues
VoIP Data
Traffic
Ingress DSCP 46
Ingress CoS 5
DiffServ EF
Assigned DSCP 46
Assigned CoS 5
CoS-to-ingress 2, 3, 4, 5, 6, 7 (queue 2)
queue map
CoS-to-egress 5 (queue 1)
queue-set map
Table 26-3
Table 26-3 Auto-QoS Configuration for the Ingress Queues
Ingress Queue
SRR shared
Priority
Table 26-4
Table 26-4 Auto-QoS Configuration for the Egress Queue-Set
Egress Queue
Priority (shaped)
SRR shared
SRR shared
SRR shared
Catalyst 3750 Metro Switch Software Configuration Guide
26-30
VoIP Control
Traffic
26
3
AF31
26
3
3, 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 queue-set.
Queue Number
in the
Queue-Set
1
2
3
4
Routing Protocol STP BPDU
Traffic Traffic
– –
6 7
– –
48 56
6 7
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
Chapter 26 Configuring QoS
Table 26-2.
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
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