Qtech QSW-8200-28T-POEAC- DC [13/38] Mls qos trust

User Manual

Chapter 1. Commands for QoS 13

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1.17 mls qos queue wdrr weight

 This command is not supported by the switch.

1.18 mls qos queue bandwidth

 This command is not supported by switch.

1.19 mls qos trust

 Command: mls qos trust {cos | dscp}

 no mls qos trust {cos | dscp}

 Function: Configures port trust; the no command disables the current trust status of

the port.

 Parameters: cos configures the port to trust CoS value; dscp configures the port to trust

DSCP value.

 Default: Do not trust CoS and DSCP values.

 Command mode: Port Configuration Mode.

 Usage Guide: trust cos mode: can set the intp value based cos-to-intp mapping.

 trust dscp mode: can set the intp field based dscp-to-intp mapping, it is valid for IPv4,

IPv6 packets.

 trust cos and trust dscp can be set at the same time, trust dscp priority is higher than

trust cos priority.

 Example: Configuring ethernet port 1/0/1 to trust cos value, i.e., classifying the packets

according to cos value.

 Switch(config)#interface ethernet 1/0/1

 Switch(Config-If-Ethernet1/0/1)#mls qos trust cos

1.20 pass-through-cos

 Command: pass-through-cos

 no pass-through-cos

 Function: Forbid the egress packets rewritting L2 cos value.

 Parameter: None.

 Default: The egress packets rewrite L2 CoS value.

 Command Mode: Port Mode

 Usage Guide: The egress packets can not rewrite L2 CoS value when configuring pass-

through-cos on the ingress. This command may associate with other commands of QoS,

such as mls qos trust command. After QoS actions are valid, the egress packets save the

original CoS value.

 Example: Configuring ethernet port 1/0/1 to trust dscp value, i.e., classifying the

packets according to dscp value.