AutoQoS
Chapter 3 contained an introduction to AutoQoS. This chapter expands on
that and offers some restrictions, caveats, and ways to tune it.
Some benefits of AutoQoS include:
■ Classification of applications
■ Automatic policy generation
■ QoS configuration
■ Monitoring and recording via SNMP and Cisco QPM
■ Consistent QoS policies
AutoQoS originally supported only VoIP applications. AutoQoS for VoIP is
available on all Cisco routers and switches. Implementing it is basically a
one-step process, as shown in the example in Chapter 3.
AutoQoS for Switches
To configure AutoQoS on a switch, use the interface command auto qos
voip {cisco-phone | cisco-softphone | trust}. Use the cisco-phone keyword
when the interface connects to a phone; QoS markings are trusted when a
Cisco IP phone is detected. Use the cisco-softphone keyword when the
interface connects to a computer using the Cisco’ SoftPhone. Use the trust
keyword when the interface links to a trusted switch or a router. Giving this
command automatically enables global QoS support (mls qos). Use show
auto qos or show mls qos interface interface-id to view the AutoQoS
configuration and the QoS actions.