Auto Qos Trust - Cisco Catalyst 3560-X Command Reference Manual
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Also See for Catalyst 3560-X:
- Software configuration manual (1538 pages) ,
- Command reference manual (1244 pages) ,
- Manual (276 pages)
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Chapter 2
Catalyst 3750-X and 3560-X Switch Cisco IOS Commands
auto qos trust
Syntax Description
Defaults
Table 2-3
3
DSCP
4
CoS
CoS-to-ingress
queue map
CoS-to-egress
queue map
1. STP = Spanning Tree Protocol
2. BPDU = bridge protocol data unit
3. DSCP = Differentiated Services Code Point
4. CoS = class of service
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Use the auto qos trust interface configuration command on the switch stack or on a standalone switch
to automatically configure quality of service (QoS) for trusted interfaces within a QoS domain. Use the
no form of this command to return to the default setting.
auto qos trust {cos | dscp}
no auto qos trust {cos | dscp}
cos
Trust the CoS packet classification.
dscp
Trust the DSCP packet classification.
Auto-QoS trust is disabled on the port.
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.
Traffic Types, Packet Labels, and Queues
VOIP Data
VOIP Control
Traffic
Traffic
46
24, 26
5
3
4, 5 (queue 2)
4, 5
2, 3, 6, 7 (queue 2)
(queue 1)
Table 2-4
Auto-QoS Configuration for the Ingress Queues
Ingress Queue
Queue Number
1
SRR
shared
1
Priority
2
1. SRR = shaped round robin. Ingress queues support shared mode only.
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1
Routing Protocol
STP
BPDU
Traffic
Traffic
48
56
6
7
CoS-to-Queue Map
0, 1, 2, 3 ,6, 7
4, 5
Catalyst 3750-X and 3560-X Switch Command Reference
2
Real-Time
Video Traffic
All Other Traffic
34
–
3
–
0, 1, 2, 3, 6, 7(queue
1)
0 (queue 3)
2
(queue 3)
Queue Weight
Queue (Buffer)
(Bandwidth)
Size
70 percent
90 percent
30 percent
10 percent
auto qos trust
0, 1
(queue 4)
2-55
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