Qos queues, Assigning qos priorities to traffic, Qos queues 9 – Brocade TurboIron 24X Series Configuration Guide User Manual
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Brocade TurboIron 24X Series Configuration Guide
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QoS queues
Mapping between DSCP value and Forwarding Queue cannot be changed. However, mapping
between DSCP values and the other properties can be changed as follows:
•
DSCP to internal forwarding priority mapping – You can change the mapping between the
DSCP value and the Internal Forwarding priority value from the default values shown in
through
. This mapping is used for COS marking and determining the
internal priority when the trust level is DSCP. Refer to
“Changing the DSCP –> internal
•
Internal forwarding priority to forwarding queue – You can reassign an internal forwarding
priority to a different hardware forwarding queue. Refer to
“Changing the internal forwarding
priority –> hardware forwarding queue mappings”
QoS queues
Devices support the eight QoS queues (qosp0 – qosp7) listed in
.
The queue names listed above are the default names. If desired, you can rename the queues as
instructed in
Packets are classified and assigned to specific queues based on the criteria shown in
Assigning QoS priorities to traffic
By default, all traffic is in the best-effort queue (qosp0) and is honored on tagged ports on all
devices. You can assign traffic to a higher queue based on the following:
•
Incoming port (sometimes called the ingress port)
•
Static MAC entry
Internal
Forwarding
Priority
6
6
6
6
6
6
6
6
7
7
7
7
7
7
7
7
Forwarding
Queue
6
6
6
6
6
6
6
6
7
7
7
7
7
7
7
7
TABLE 169
Default QoS mappings, columns 48 to 63 (Continued)
DSCP value
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
TABLE 170
QoS queues
QoS Priority Level
QoS Queue
0
qosp0 (lowest priority queue)
1
qosp1
2
qosp2
3
qosp3
4
qosp4
5
qosp5
6
qosp6
7
qosp7 (highest priority queue)