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Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL_28731-01
Chapter 42 Configuring Quality of Service
Configuring Auto-QoS on a Standalone Supervisor Engine 6-E/6L-E or Supervisor Engine 7-E/7L-E/8-E
It establishes a trusted boundary that recognizes Cisco IP Phones and trusts the Cos setting of the packets
from the phone. If a Cisco IP Phone is not detected, the Cos field is ignored and the packets are not
classified as voice traffic. Upon detecting a Cisco phone, the ingress packets are marked based on the
Cos value in the packets. This marking is used on egress for proper traffic classification and handling.
Auto qos srnd4—Is generated when any new auto qos command is configured on an interface and
migrates from legacy CLIs to generate new configurations. This CLI only generates a global
configuration if during migration, one or more interfaces has legacy auto-QoS enabled
Auto qos video—Generates QoS configuration for untrusted interfaces. It incorporates a service-policy
to classify the traffic coming from untrusted desktops/devices and marks them accordingly.
Auto qos void cisco-softphone—Generate QoS configuration for interfaces connected to PCs running
the Cisco IP SoftPhone application and marks as police traffic stemming from such interfaces. Ports
configured with this CLI are considered untrusted.
Auto qos classify—Generates QoS configuration for untrusted interfaces. It applies a service-policy to
classify the traffic stemming from untrusted desktops or devices and marks them accordingly. The
service-policies generated do not police.
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