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Type
CBQ
If the burst traffic is too heavy, increase the queue length to make queue scheduling more accurate.
Configuring the FIFO queue size
This feature is not supported on SAP modules operating in bridge mode.
FIFO is the default queue scheduling mechanism for an interface or PVC, and the FIFO queue size is
configurable.
To configure the FIFO queue size:
Step
1.
Enter system view.
2.
Enter interface view or PVC
view.
3.
Configure the FIFO queue
size.
Number of
Advantages
queues
•
•
•
Configurable (0 to
64)
•
•
Command
system-view
•
•
qos fifo queue-length queue-length
Flexible traffic
classification based on
various rules and
differentiated queue
scheduling mechanisms
for EF, AF and BE
services.
Highly precise bandwidth
guarantee and queue
scheduling on the basis of
AF service weights for
various AF services.
Absolutely preferential
queue scheduling for the
EF service to meet the
delay requirement of
real-time data.
Overcomes the
disadvantage of PQ that
some low-priority queues
are not serviced by
restricting the high-priority
traffic.
WFQ scheduling for
best-effort traffic (the
default class).
Enter interface view:
interface interface-type
interface-number
Enter PVC view:
a. interface atm interface-number
b. pvc vpi/vci
49
Disadvantages
The system overheads are large.
Remarks
N/A
N/A
By default:
•
The FIFO queue
length is 75 for tunnel
interfaces, aggregate
interfaces, and HDLC
link bundle interfaces.
•
The FIFO queue
length is 1024 for
other interfaces.
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