Understanding QoS Configuration on the Matrix N-Series
February 22, 2008
Page 11 of 29
The
following
example
displays
default
values
for
the
show
cos
port
‐
type
irl
command
output:
Configuring CoS Port Groups
CoS
port
groups
provide
for
grouping
ports
by
CoS
feature
configuration
and
port
type.
Ports
are
required
to
be
configured
by
groups:
this
feature
provides
a
meaningful
way
of
identifying
ports
by
similar
functionality
and
port
type.
Groups
consist
of
a
group
number
and
port
type
and
are
numbered
as
such,
port
‐
group.port
‐
type
.
For
example:
port
group
0,
port
type
1
would
be
numbered
port
group
0.1
.
Two
default
port
groups
exist
for
both
TxQ
and
IRL
CoS
features
and
are
identified
as
port
group
0
and
port
type
0
or
1
and
are
indexed
as
0.0
and
0.1
,
respectively
for
each
feature.
These
default
port
groups
cannot
be
removed
and
all
physical
ports
in
the
system
are
assigned
to
one
of
the
two
port
groups
for
each
feature
(remember
group
assignment
is
determined
by
port
type).
Additional
port
groups
may
be
created.
Ports
assigned
to
a
new
port
group
cannot
belong
to
another
non
‐
default
port
group
entry
and
must
be
comprised
of
the
same
port
type
as
defined
by
the
port
group
you
are
associating
it
with.
The
creation
of
additional
port
groups
could
be
used
to
combine
similar
ports
by
their
function
for
flexibility.
For
instance,
ports
associated
to
users
can
be
added
to
a
port
group
called
Users
and
ports
associated
to
uplink
ports
can
be
added
to
a
port
group
called
Uplink.
Using
these
port
groups,
a
class
of
service
unique
to
each
group
can
assign
different
rate
limits
to
each
port
group.
User
ports
can
be
assigned
a
rate
limit
configured
in
one
CoS,
while
Uplink
ports
can
be
assigned
a
different
rate
limit
configured
in
another
CoS.
A
maximum
of
8
port
groups
per
CoS
transmit
queue
and/or
rate
‐
limiter
function
are
supported.
Matrix(su)->
show cos port-type irl
Number of resources: Supported rate types:
txq = transmit queue(s) perc = percentage
irl = inbound rate limiter(s) pps = packets per second
orl = outbound rate limiter(s) Kbps = kilobits per second
Mbps = megabits per second
Gbps = gigabits per second
Tbps = terabits per second
Port type Number of Supported Eligible Unselected
Index description limiters rate type ports ports
----- ------------ --------- --------- ----------------- -----------------
0 DFE-P 32 IRL 32 irl perc ge.3.1-12; ge.3.1-12;
pps ge.4.1-9 ge.4.1-9
Kbps
Mbps
Gbps
1 DFE-P 8 IRL 8 irl perc ge.1.1-18; ge.1.1-18;
pps fe.2.1-48; fe.2.1-48;
Kbps ge.5.1-60; ge.5.1-60;
Mbps ge.6.1-30; ge.6.1-30;
Gbps ge.7.1-30 ge.7.1-30
