Common Qos Scenarios; Sample Network Design Overview - Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual

Common QoS Scenarios

This example shows how to set the transmit-queue size ratio for Gigabit Ethernet port 1/2:
Router# configure terminal
Enter configuration commands, one per line.
Router(config)# interface gigabitethernet 1/2
Router(config-if)# wrr-queue queue-limit 75 15
Router(config-if)# end
Router#
This example shows how to verify the configuration:
Router# show queueing interface gigabitethernet 1/2 | include queue-limit
Router#
Common QoS Scenarios
This section provides sample configurations for some common QoS scenarios. If you already know how
to configure PFC QoS for your network or if you need specific configuration information, see the other
sections of this chapter.
The scenarios in this section are based on a sample network that is described in the
Design Overview" section on page
regularly used QoS configurations.
These sections describe some common QoS scenarios:
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Sample Network Design Overview

This sample network is based on a traditional campus network architecture that uses Catalyst 6500 series
switches in the access, distribution, and core layers. The access layer provides 10/100 Ethernet service
to desktop users. The network has Gigabit Ethernet links from the access layer to the distribution layer
and Gigabit or 10 Gigabit Ethernet links from the distribution layer to the core layer.
This is the basic port configuration:
Access Layer
switchport mode access
switchport access vlan 10
switchport voice vlan 110
Distribution and Core Interswitch Links
switchport mode trunk
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
38-92
queue-limit ratios:
Sample Network Design Overview, page 38-92
Classifying Traffic from PCs and IP Phones in the Access Layer, page 38-93
Accepting the Traffic Priority Value on Interswitch Links, page 38-96
Prioritizing Traffic on Interswitch Links, page 38-97
Using Policers to Limit the Amount of Traffic from a PC, page 38-100
End with CNTL/Z.
75[queue 1] 25[queue 2]
38-92. This section uses this sample network to describe some
Chapter 38 Configuring PFC QoS
"Sample Network
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