Quality of Service Overview
February 22, 2008
Page 6 of 29
Figure 3 Weighted Fair Queuing Packet Behavior
Hybrid Queuing
Hybrid
queuing
combines
the
properties
of
both
strict
and
weighted
fair
queuing.
Figure 4
on
page 7,
depicts
hybrid
queuing.
The
configuration
is
for
strict
queuing
on
queue
3
and
weighted
fair
queuing
for
the
remaining
queues,
with
queue
2
receiving
50
percent
of
the
remaining
time
slices,
and
the
other
queues
receiving
25
percent
each.
The
benefit
of
hybrid
queueing
is
that
queues
configured
as
strict
will
receive
all
the
bandwidth
that
is
available
in
the
order
of
their
priority
until
empty.
Remaining
bandwidth
will
be
used
by
the
weighted
fair
queues
based
upon
the
time
slice
percentages
configured.
The
down
side
remains
that
anytime
strict
queuing
is
used,
should
the
strict
queues
never
fully
empty,
remaining
queues
will
be
starved
of
bandwidth.
