Planet WGSW-28040 - Qos Trust; Command Guide of WGSW

Command Guide of WGSW-28040
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Switch# show qos
QoS Mode: basic
Basic trust: cos
4.21.2 qos trust
Command:
qos trust (cos | cos-dscp | dscp | precedence)
Parameter:
cos
Specify the device to trust CoS
cos-dscp
Specify the device to trust DSCP for IP packets, and trust CoS for non-IP packets.
dscp
Specify the device to trust DSCP
precedence
Specify the device to trust IP Precedence
Default:
Default qos basic mode trust type is cos.
Mode:
Global Configuration
Usage Guide:
In QoS basic mode, there are 4 trust types for device to judge the appropriate queue of the packets. This command is
able to switch between these trust types.
CoS:
IEEE 802.1p defined 3bits priority value in vlan tag. Trust this value in packets and assign queue according to
cos-queue map.
DSCP:
IETF RFC2474 defined 6bits priority value in IP packet (highest 6bits in ToS field). Trust this value in packets and
assign queue according to dscp-queue map.
IP Precedence:
The highest 3bits priority value in IP packet ToS field. Trust this value in packets and assign queue according to
precedence-queue map.