Advanced Configuration Options
52
Model 2160 Series Getting Started Guide
4 • Web configuration
In the
Scheduling Configuration
table, you can set up the type of QoS operation from 1 to 3. You can also set
up the Queue Weight from 1 to 15.
WRR Scheduling Configuration Example.
For example, you
can set the Model 2160 use Weighted Round-Robin (WRR) queu-
ing that specifies a relative weight of each queue. WRR uses a pre-
defined relative weight for each queue that determines the
percentage of service time to services each queue before moving on
to the next queue. This prevents the head-of-line blocking that can
occur with strict priority queuing.
For this example, set up the WRR (Type 1) to share bandwidth by using scheduling weights 1, 2, 4 and 8 for
queues 0 through 3 respectively.
According to above two tables, we can get the mapping QoS values to Egress Queues as the following:ely.
Table 9. VLAN Tag Priority Levels
Priority Level
Traffic Type
0 (default)
Best Effort
1
Background
2
Spare
3
Excellent Effort
4
Controlled Load
5
Video, less than 100 milliseconds latency and jitter
6
Voice, less than 10 milliseconds latency and jitter
7
Network Control
Table 10. WRR Scheduling Configuration Example Values
Queue
0
1
2
3
Type 1
WRR
WRR
WRR
WRR
Weight
1
2
4
8
Priority
0
1
2
3
4
5
6
7
Queue
1
0
0
1
2
2
3
3
Priority
0
1
2
3
Queue
1,2
0,3
4,5
6,7
