qos trust

Description

Sets the trust mode. Trust mode determines whether CoS or DSCP values are used to assign local priority values to ingress packets. CoS values are taken from the CoS map, and DSCP values are taken from the DSCP map.

In theconfigcontext:

• This command sets the trust mode that is globally applied to all interfaces that do not have a trust mode configured.
• Thenoform of this command restores all interfaces that do not currently have a trust mode configured to the default setting (none).

In theconfig-ifcontext:

• This command sets the trust mode override for a specific interface.
• Thenoform of this command clears a trust mode override. The interface then uses the global setting. This is the only way to remove a trust mode override.

Command context

config

config-if

Parameters

none

Ignore all packet headers. Ingress packets are assigned the priority value configured for CoS map value0. Default.

NOTE:

In theconfig-ifcontext, the commandqos coscan be used to remark packets whennoneis set as the trust mode.

cos

For 802.1 VLAN-tagged packets, use the priority code point field value from the outermost VLAN header as the index into the CoS map. If the packet is untagged, use the priority configured for CoS map value0.

dscp

For IP packets, used the code point field value as the index into the DSCP map.

For non-IP packets with 802.1 VLAN tags, use the priority code point field value of the outermost tag header as the index into the CoS map. For untagged, non-IP packets, use the priority configured for CoS map value0.

Authority

Administrators or local user group members with execution rights for this command.

Example

设置全局信任模式dscp, which is applied to all interfaces that do not already have an individual trust mode configured. An override is then applied to interface2/2/2, and LAG 100, setting trust mode tocos:

switch(config)#qos trust dscpswitch(config)#interface 2/2/2switch(config-if)#qos trust cosswitch(config-if)#接口延迟100switch(config-if)#qos trust cos