Cisco Catalyst 3650 Series, Command Reference Manual

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4 BPDU = bridge protocol data unit
5 DSCP = Differentiated Services Code Point
6 CoS = class of service
Table 31: Auto-QoS Configuration for the Egress Queues
Queue (Buffer)
Size for 10/100
Ethernet Ports Queue (Buffer)
Size for
Gigabit-Capable
Ports Queue Weight
(Bandwidth) CoS-to-Queue
Map Queue Number Egress Queue
15 percent 25 percent Up to 100
percent 4, 5 1 Priority (shaped)
25 percent 25 percent 10 percent 2, 3, 6,7 2 SRR shared
40 percent 25 percent 60 percent 0 3 SRR shared
20 percent 25 percent 20 percent 1 4 SRR shared
The device applies the auto-QoS-generated commands as if the commands were entered from the
command-line interface (CLI). An existing user configuration can cause the application of the generated
commands to fail or to be overridden by the generated commands. These actions occur without warning.
If all the generated commands are successfully applied, any user-entered configuration that was not
overridden remains in the running configuration. Any user-entered configuration that was overridden can
be retrieved by reloading the device without saving the current configuration to memory. If the generated
commands fail to be applied, the previous running configuration is restored. Note
After auto-QoS is enabled, do not modify a policy map or aggregate policer that includes AutoQoS in its name.
If you need to modify the policy map or aggregate policer, make a copy of it, and change the copied policy
map or policer. To use the new policy map instead of the generated one, remove the generated policy map
from the interface, and apply the new policy map.
To display the QoS configuration that is automatically generated when auto-QoS is enabled, enable debugging
before you enable auto-QoS. Use the
debug auto qos privileged EXEC command to enable auto-QoS
debugging.
The following policy maps and class maps are created and applied when running the auto qos trust cos
command.
Policy maps:
• AutoQos-4.0-Trust-Cos-Input-Policy
• AutoQos-4.0-Output-Policy
Class maps:
• class-default (match-any)
• AutoQos-4.0-Output-Priority-Queue (match-any)
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
609
auto qos trust