Delta DVS-328 series, Руководство пользователя

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C h a p t e r 3 F e a t u r e d F u n c t i o n s
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3.6.1 QoS
Quality of Service (QoS) provides a traffic prioritization for you to alleviate the congestion problem, and ensure
that high-priority traffic is delivered first. If the bandwidth of the network is limited, you can use QoS to schedule
the priority of a different service packet flow.
3.6.1.1 QoS Setting
QoS Setting

Global: Specify the trust mode settings for all interfaces and aggregation groups. Then, make a selection
from the Global Trust Mode drop-down list.
Description Factory default
Global Trust Mode
Make a selection from the Global Trust Mode drop-down list that affects all
interfaces or aggregation groups:

trust dot1p: All interfaces or aggregation groups are configured for the 802.1p
marking to classify traffic.

trust ip-dscp: All interfaces and aggregation groups are configured for the IP
DSCP packet matching to classify traffic.
trust dot1p
Global Schedule Scheme
Make a selection from the Global Schedule Scheme drop-down list that affects all
interfaces:

sp: SP (Strict-Priority) classifies the queue from the high priority to the low
priority. If the higher priority of the queue is empty, the lower priority data of the
queue starts to be sent.

wrr: WRR (Weighted Round Robin) schedules the queue by turns, so each
queue has a service time. Each queue can be allocated a weight value or
percentage for the bandwidth.
Wrr

Interface: Specify the trust mode settings for an individual interface and aggregation groups. Select
an interface or aggregation groups from the Interface drop-down list, and then make a selection from the
Interface Trust Mode drop-down list.
Description Factory default
Interface Trust Mode
Make a selection from the Interface Trust Mode drop-down list that affects an
individual interfaces or aggregation groups:

trust dot1p: The interface or aggregation groups are configured for the 802.1p
marking to classify traffic.

trust ip-dscp: The interface and aggregation groups are configured for the IP
DSCP packet matching to classify traffic.
trust dot1p
Interface Schedule Scheme
Make a selection from the Global Schedule Scheme drop-down list that affects all
interfaces:

sp: SP (Strict-Priority) classifies the queue from the high priority to the low
priority. If the higher priority of the queue is empty, the lower priority data of the
queue starts to be sent.

wrr: WRR (Weighted Round Robin) schedules the queue by turns, so each
queue has a service time. Each queue can be allocated a weight value or
percentage for the bandwidth.
Wrr