Cisco IE 3000 User Manual

32-32
Cisco IE 3000 Switch Software Configuration Guide
OL-13018-01
Chapter 32 Configuring QoS
Configuring Standard QoS
Configuring the Trust State on Ports within the QoS Domain
Packets entering a QoS domain are classified at the edge of the QoS domain. When the packets are
classified at the edge, the switch port within the QoS domain can be configured to one of the trusted
states because there is no need to classify the packets at every switch within the QoS domain.
Figure 32-11 shows a sample network topology.
Figure 32-11 Port Trusted States within the QoS Domain
Beginning in privileged EXEC mode, follow these steps to configure the port to trust the classification
of the traffic that it receives:
101236
Trunk
Tr usted interface
Traffic classification
performed here
Tr usted boundary
IP
P1P3
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
interface interface-id Specify the port to be trusted, and enter interface configuration
mode.
Valid interfaces include physical ports.

Cisco IE 3000 Specifications

General

Operating Temperature	-40 to 75°C (-40 to 167°F)
DRAM	128 MB
Flash Memory	32 MB
Uplink Ports	2 x 10/100/1000Base-T or SFP
MAC Address Table Size	8000
Mounting	DIN rail, Wall