Network Router User Manual

42-57
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
Chapter 42 Configuring PFC QoS
Configuring PFC QoS
IP packets with COS changed by policing: 59998
Non-IP packets with COS changed by policing: 0
Router#
Enabling Ignore Port Trust
In Release 12.2(18)SXF5 and later releases, the ignore port trust feature allows an ingress policy to
apply a configured IP precedence or DSCP value to any traffic, rather than only to untrusted traffic.
To enable ignore port trust, perform this task:
Note For untrusted traffic, when ignore port trust is enabled, PFC QoS does the following:
• For IP traffic, PFC QoS uses the received DSCP value as the initial internal DSCP value.
• For traffic without a recognizable ToS byte, PFC QoS maps the port CoS value to the initial internal
DSCP value.
This example shows how to enable ignore port trust and verify the configuration:
Router# configure terminal
Router(config)# mls qos marking ignore port-trust
Router(config)# end
Router# show mls qos | include ignores
Policy marking ignores port_trust
Router#
Command Purpose
Step 1
Router(config)# mls qos marking ignore port-trust
Enables ignore port trust globally on the router.
Router(config)# no mls qos marking ignore port-trust
Disables ignore port trust globally on the router
(default).
Step 2
Router(config)# end
Exits configuration mode.
Step 3
Router# show mls qos | include ignores
Verifies the configuration.