Ericsson MINI-LINK 6351 Technical Description page 29

Figure 15
The number of queues of each type is configurable (see Table 3).
Table 3
Number of
high-priority SP
queues
8
0
2
3
3
4
4.4.7 Shaping
The shaping mechanism enforces a bit rate that is lower than the line rate of
the physical interface. The mechanism buffers excess frames and schedules
them for later transmission. Shaping results in a smoother frame output bit rate.
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High-priority SP queues
WFQ queues
Low-priority SP queue
Example of Combined SP and WFQ Scheduling
Supported Combinations of SP and WFQ Priority Queues
Ethernet egress buffer
Priority queue 7
Priority queue 6
Priority queue 5
Priority queue 4
Priority queue 3
Priority queue 2
Priority queue 1
Priority queue 0
Number of WFQ
queues
0
8
6
5
4
3
Ethernet Functions
Empty first
Empty second
Empty third
Serve 40%
Serve 30%
Serve 20%
Serve 10%
Empty last
Number of low-priority
SP queues
0
0
0
0
1
1
25