Specifications

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Catalyst 2970 Switch Software Configuration Guide
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Chapter 27 Configuring QoS
Configuring Auto-QoS
Auto-QoS Configuration Example
This section describes how you could implement auto-QoS in a network, as shown in Figure 27-10.
Figure 27-10 Auto-QoS Configuration Example Network
The intelligent wiring closets in Figure 27-10 contain Catalyst 2970 and Catalyst 3750 switches. The
object of this example is to prioritize the VoIP traffic over all other traffic. To do so, enable auto-QoS on
the switches at the edge of the QoS domains in the wiring closets.
Cisco router
Catalyst 3750
switch
Catalyst 2970
switch
Catalyst 2970
switch
Gigabit
Ethernet 1/0/1
Gigabit
Ethernet 0/1
To Internet
Catalyst 3750 switch
Gigabit Ethernet 1/0/5
Gigabit Ethernet 1/0/2
Gigabit
Ethernet
0/2
Gigabit
Ethernet
0/1
Trunk
link
Gigabit Ethernet 1/0/1
Trunk
link
Cisco IP phones
End stations
Fast Ethernet 1/0/3
Fast Ethernet 1/0/5
Gigabit
Ethernet 0/5
Cisco IP phones
Video server
172.20.10.16
Catalyst 3750
switch
93208
IP
IP
IP
IP
Gigabit
Ethernet 0/3