User manual

4 Configuration DES-1210 Metro Ethernet Managed Switch User Manual
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From Port / To Port: A consecutive group of ports may be configured starting with the selected port.
Priority: Defines the priority assigned to the port. The priority are 0~7.
Click Apply to implement changes made.
QoS > 802.1p User Priority
When using 802.1p priority mechanism, the packet is examined for the presence of a valid 802.1p priority tag.
If the tag is present, the packet is assigned to a programmable egress queue based on the value of the
tagged priority. The tagged priority can be designated to any of the available queues.
The Switch allows the assignment of a class of service to each of the 802.1p priorities.
Figure 4.97 - QoS > 802.1p User Priority
Once the user had assigned a priority to the port groups on the Switch, you can then assign this Class to
each of the four levels of 802.1p priorities. Click Apply to set your changes.
QoS > DSCP Priority Settings
When using the DSCP priority mechanism, the packet is classified based on the DSCP field in the IP header.
If the tag is present, the packet is assigned to a programmable egress queue based on the value of the
tagged priority. The tagged priority can be designated to any of the available queues. When a packet is
received containing this DSCP tag, it will be mapped to the CoS queue configured here. These settings will
only take effect if at least one of the priority settings per port is configured for DSCP.When DSCP is set to
enable, TOS cannot be used, and when TOS is set to enable, DSCP cannot be used.
Figure 4.98 - QoS > DSCP Priority Settings
Select QoS Mode: Specify the mode to be DASP or TOS.
From DSCP value / To DSCP value: Specify the range of DSCP values.
Class ID: Specify the priority queue for the switch. The value is from 0 to 3.
Click Apply to implement changes made.