49
Figure 16 Queue scheduling profile configured with both SP and WRR
•
Queue 7 has the highest priority. Its packets are sent preferentially.
•
Queue 6 has the second highest priority. Packets in queue 6 are sent when queue 7 is empty.
•
Queue 3, queue 4, and queue 5 are scheduled according to their weights. When both queue 6
and queue 7 are empty, WRR group 1 is scheduled.
•
Queue 1 and queue 2 are scheduled according to their weights. WRR group 2 is scheduled
when queue 7, queue 6, queue 5, queue 4, and queue 3 are all empty.
•
Queue 0 has the lowest priority, and it is scheduled when all other queues are empty.
Configuration restrictions and guidelines
When you configure a queue scheduling profile, follow these restrictions and guidelines:
•
Both Layer 2 and Layer 3 Ethernet interfaces support queue scheduling profiles. The term
"interface" in this chapter collectively refers to these two types of interfaces. You can use the
port link-mode
command to configure an Ethernet port as a Layer 2 or Layer 3 interface (see
Layer 2—LAN Switching Configuration Guide
).
•
Only one queue scheduling profile can be applied to an interface.
•
You can modify the scheduling parameters in a queue scheduling profile already applied to an
interface.
Configuration procedure
Step Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Create a queue scheduling
profile and enter queue
scheduling profile view.
qos qmprofile
profile-name
By default, no queue
scheduling profile exists.
3.
Configure queue scheduling
parameters.
•
Configure a queue to use SP:
queue queue-id sp
•
Configure a queue to use
WRR:
queue queue-id wrr
group
group-id
{
weight |
byte-count
}
schedule-value
•
Configure a queue to use
WFQ:
queue queue-id wfq
group
group-id
{
weight |
byte-count
}
schedule-value
By default, byte-count WRR
queuing is used on an
interface.
One queue can use only one
queue scheduling algorithm.
In a queue scheduling profile,
you can configure different
queue scheduling algorithms
for different queues.
However, you cannot
configure both WRR and
WFQ in a queue scheduling
profile.
Summary of Contents for FlexFabric 5940 Series
Page 23: ...17 Figure 3 QoS processing flow ...
Page 84: ...78 Figure 26 MPLS label structure ...
Page 91: ...85 Switch burst mode enable ...
