Cisco Catalyst 3560-X Command Reference Manual page 88

auto qos trust
Table 2-5 Auto-QoS Configuration for the Egress Queues
Egress Queue
Priority (shaped)
SRR shared
SRR shared
SRR shared
Command Modes
Command History
Usage Guidelines
Catalyst 3750-X and 3560-X Switch Command Reference
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Queue Number CoS-to-Queue Map
1 4, 5
2 2, 3, 6,7
3 0
4 1
Interface configuration
Release Modification
12.2(55)SE This command was introduced.
Use this command to configure the QoS for trusted interfaces within the QoS domain. The QoS domain
includes the switch, the network interior, and edge devices that can classify incoming traffic for QoS.
Auto-QoS configures the switch for connectivity with a trusted interface. The QoS labels of incoming
packets are trusted. For nonrouted ports, the CoS value of the incoming packets is trusted. For routed
ports, the DSCP value of the incoming packet is trusted.
To take advantage of the auto-QoS defaults, you should enable auto-QoS before you configure other QoS
commands. You can fine-tune the auto-QoS configuration after you enable auto-QoS.
If the port is configured with auto-QoS trust, it trusts all the packets on the port. If the packets are not
marked with a DSCP or CoS value, default marking takes affect.
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Chapter 2 Catalyst 3750-X and 3560-X Switch Cisco IOS Commands
Queue (Buffer) Size
Queue Weight for Gigabit-Capable
(Bandwidth) Ports
up to 100 percent 25 percent
10 percent 25 percent
60 percent 25 percent
20 percent 25 percent
Queue (Buffer)
Size for 10/100
Ethernet Ports
15 percent
25 percent
40 percent
20 percent
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