Qos Trust (Global) - HP Bc1500 - BladeSystem - Blade PC Reference Manual

QoS Commands

qos trust (Global)

The qos trust Global Configuration mode command configures the system to the basic mode and
trust state. To return to default state (trust VPT), use the no form of the command.
Syntax
qos trust {cos | dscp}
no qos trust
Parameters
■
cos — Indicates that ingress packets are classified with packet CoS values. Untagged packets
are classified with the default port CoS value.
■
dscp — Indicates that ingress packets are classified with packet DSCP values.
Default Setting
CoS is the default trust mode.
Command Mode
Global Configuration mode
Command Usage
To disable QoS trust compleletly, use the no qos command. If no qos trust
set, and QoS trust is not disabled.
Packets entering a Quality of Service (QoS) domain are classified at the edge of the QoS domain.
When 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
device in the domain.
A switch port on an inter-QoS domain boundary can be configured to the DSCP trust state, and,
if the DSCP values are different between the QoS domains, the DSCP to DSCP mutation map
can be applied.
Use this command to specify whether the port is trusted and which fields of the packet to use to
classify traffic.
When the system is configured as trust DSCP, traffic is mapped to a queue according to the
DSCP-queue map.
The following table describes the VPT Default Mapping Table.
VPT Value
0
1
2
3
4
5
18-26
Queue Number
2
1
1
2
3
3
www.hp.com
, trust VPT is
is used
HP PC Blade Switch CLI Reference Guide