Auto-Qos Configuration Example - Cisco Catalyst 3550 series Software Configuration Manual

Chapter 29 Configuring QoS

Auto-QoS Configuration Example

This section describes how you could implement auto-QoS in a network, as shown in
Figure 29-8 Auto-QoS Configuration Example Network
Fast Ethernet 0/7
Fast Ethernet 0/5
Fast Ethernet 0/3
Cisco IP phones
The intelligent wiring closets in
software image (EI) and Catalyst 3550 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.
Note You should not configure any standard QoS commands before entering the auto-QoS commands. You
can fine-tune the QoS configuration, but we recommend that you do so only after the auto-QoS
configuration is completed.
78-11194-09
Gigabit Ethernet 0/1
Intelligent wiring closet
Catalyst 3550 switches
Catalyst
3550-24-EMI
End stations
switch
IP
Gigabit
Ethernet 0/1
IP
Catalyst 3550 switch
at the edge of the
QoS domain
IP
Cisco router
Gigabit Ethernet 0/5
Catalyst 3550-12G switch
Gigabit Ethernet 0/2
Trunk Trunk
link link
Gigabit
Ethernet
0/2
Catalyst
3550-24-EMI
switch
Gigabit
Ethernet 0/1
Catalyst 3550 switch
at the edge of the
QoS domain
Figure 29-8 contain Catalyst 2950 switches running the enhanced
Catalyst 3550 Multilayer Switch Software Configuration Guide
Auto-QoS Configuration Example
To Internet
Intelligent wiring closet
Catalyst 3550 switches
Video server
172.20.10.16
Gigabit
Ethernet
0/1
IP
Fast Ethernet 0/7
Fast Ethernet 0/5
IP
Fast Ethernet 0/3
IP
Cisco IP phones
Figure 29-8.
29-23