Mapping Cos Values To Egress Queues; Table 12: Ieee 802.1P Egress Queue Priority Mapping; Table 13: Cos Priority Levels - Edge-Core ES3510MA Management Manual

M C S V
APPING O ALUES
E Q
TO GRESS UEUES
Figure 112: Setting the Queue Mode (Strict and WRR)
Use the Traffic > Priority > PHB to Queue page to specify the hardware
output queues to use based on the internal per-hop behavior value. (For
more information on exact manner in which the ingress priority tags are
mapped to egress queues for internal processing, see
Priorities to Internal DSCP Values" on page
The switch processes Class of Service (CoS) priority tagged traffic by using
four priority queues for each port, with service schedules based on strict
priority, Shaped Deficit Weighted Round-Robin (SDWRR), or a combination
of strict and weighted queuing. Up to eight separate traffic priorities are
defined in IEEE 802.1p. Default priority levels are assigned according to
recommendations in the IEEE 802.1p standard as shown in
following table indicates the default mapping of internal per-hop behavior
to the hardware queues. The actual mapping may differ if the CoS priorities
to internal DSCP values have been modified

Table 12: IEEE 802.1p Egress Queue Priority Mapping

Priority 0 1
Queue 1 0
The priority levels recommended in the IEEE 802.1p standard for various
network applications are shown in
mapped to the switch's output queues in any way that benefits application
traffic for the network.

Table 13: CoS Priority Levels

Priority Level Traffic Type
1 Background
2 (Spare)
0 (default) Best Effort
3 Excellent Effort
4 Controlled Load
5 Video, less than 100 milliseconds latency and jitter
– 225 –
C
HAPTER
232).
(page
2 3 4 5
0 1 2 2
Table 13. However, priority levels can be
| Class of Service
11
Layer 2 Queue Settings
"Mapping CoS
Table 12. The
232).
6 7
3 3