Configuring Fifo Queuing; Configuration Example For Fifo Queuing - 3Com MSR 50 Series Configuration Manual

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HAPTER ONGESTION
Configuring FIFO
Queuing
Configuring FIFO
Queuing
Configuration Example
for FIFO Queuing
M
ANAGEMENT
Type Queue No.
CBQ Configurable (0
to 64)
FIFO is the queue scheduling mechanism for interface by default, and the length
of the queue can be changed by configuration command.
Follow these steps to configure FIFO Queuing
To do...
Enter system view
Enter interface view
Configure the length of
interface queue
# Set the length of FIFO Queuing on an interface to 100.
Advantages
Capable of classifying
■
data according to
flexible, various rules,
providing different
queue dispatching
mechanism for the
expedited forwarding
(EF), assured forwarding
(AF) and best-effort (BE)
services.
Capable of providing
■
highly precise
bandwidth assurance
for the AF service and
ensuring that the queue
dispatching is
performed according to
a certain weight
proportion among
various AF services.
Capable of providing
■
absolutely preferential
queue dispatching for
the EF service so as to
ensure the real-time
data delay. In the mean
time, it can overcome
the disadvantage that
the PQ of low
preference will "extinct
due to too little data
flow" since it restricts
the data flow of high
preference.
Capable of providing
■
WFQ dispatching for the
default data of
best-effort forwarding.
Use the command...
system-view
interface interface-type
interface-number
qos fifo queue-length
queue-length
Disadvantages
The system overhead is large.
Remarks
-
-
Required
The length for FIFO queue is
75 by default.