QoS Commands
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qos trust (Global)
The
qos trust
Global Configuration mode command configures the system to the basic mode and trust state. To
return to the untrusted state, use the
no
form of this 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 Configuration
CoS is the default trust mode.
Command Mode
Global Configuration mode
User Guidelines
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.
Example
The following example configures the system to the DSCP trust state.
Console(config)#
qos trust
dscp
Summary of Contents for DXS-3250 - xStack Switch - Stackable
Page 12: ...Page 11 ...
Page 46: ...ACL Commands Page 45 ...
Page 68: ...Address Table Commands Page 67 ...
Page 124: ...Ethernet Configuration Commands Page 123 ...
Page 134: ...GVRP Commands Page 133 ...
Page 144: ...IGMP Snooping Commands Page 143 ...
Page 158: ...IP Addressing Commands Page 157 Console config ip helper address 172 16 9 9 49 53 ...
Page 166: ...IP Addressing Commands Page 165 ...
Page 186: ...Line Commands Page 185 ...
Page 194: ...Management ACL Commands Page 193 ...
Page 200: ...PHY Diagnostics Commands Page 199 ...
Page 208: ...Port Monitor Commands Page 207 ...
Page 216: ...Power over Ethernet Commands Page 215 ...
Page 272: ...RMON Commands Page 271 ...
Page 334: ...Spanning Tree Commands Page 333 ...
Page 428: ...VLAN Commands Page 427 ...
Page 466: ...802 1x Commands Page 465 ...