Edge-Core ECS3510-10PD, Management Manual

Page: 282 / 1494

C
HAPTER
10
| Class of Service
Layer 3/4 Priority Settings
– 282 –
S
ETTING
P
RIORITY
P
ROCESSING TO
DSCP
OR
C
O
S
The switch allows a choice between using DSCP or CoS priority processing
methods. Use the Priority > Trust Mode page to select the required
processing method.
CLI R
EFERENCES
◆
"qos map trust-mode" on page 1182
C
OMMAND
U
SAGE
◆
If the QoS mapping mode is set to DSCP, and the ingress packet type is
IPv4, then priority processing will be based on the DSCP value in the
ingress packet.
◆
If the QoS mapping mode is set to DSCP, and a non-IP packet is
received, the packet’s CoS and CFI (Canonical Format Indicator) values
are used for priority processing if the packet is tagged. For an untagged
packet, the default port priority (see page 275 ) is used for priority
processing.
◆
If the QoS mapping mode is set to CoS, and the ingress packet type is
IPv4, then priority processing will be based on the CoS and CFI values
in the ingress packet.
For an untagged packet, the default port priority (see page 275 ) is used
for priority processing.
P
ARAMETERS
These parameters are displayed:
◆
Port – Port identifier.
◆
Trust Mode
■
CoS – Maps layer 3/4 priorities using Class of Service values.
(This is the default setting.)
■
DSCP – Maps layer 3/4 priorities using Differentiated Services Code
Point values.
W
EB
I
NTERFACE
To configure the trust mode:
1.
Click Traffic, Priority, Trust Mode.
2.
Set the trust mode.
3.
Click Apply.