314
CN4093 Application Guide for N/OS 8.4
PFC Configuration Example
Note:
DCBX
may
be
configured
to
permit
sharing
or
learning
PFC
configuration
with
or
from
external
devices.
This
example
assumes
that
PFC
configuration
is
being
performed
manually.
See
for
more
information
on
DCBX.
This
example
is
consistent
with
the
network
shown
in
.
In
this
example,
the
following
topology
is
used.
In
this
example,
PFC
is
to
facilitate
lossless
traffic
handling
for
FCoE
(priority
value 3)
and
a
business
‐
critical
LAN
application
(priority
value
4).
Assuming
that
CEE
is
off
(the
CN4093
default),
the
example
topology
shown
in
can
be
configured
using
the
following
commands:
1.
Turn
CEE
on.
Note:
Turning
CEE
on
will
automatically
change
some
802.1p
QoS
and
802.3x
standard
flow
control
settings
and
menus
(see
2.
Enable
PFC
for
the
FCoE
traffic.
Note:
PFC
is
enabled
on
priority
3
by
default.
If
using
the
defaults,
the
manual
configuration
commands
shown
in
this
step
are
not
necessary.
Table 29.
Port
‐
Based
PFC
Configuration
Switch
Port
802.1p
Priority
Usage
PFC
Setting
EXT1
0
‐
2
LAN
Disabled
3
(not
used)
Enabled
4
Business
‐
critical
LAN
Enabled
others
(not
used)
Disabled
EXT22
3
Fiber
Channel
network
Enabled
INTA1
3
FCoE
Enabled
others
(not
used)
Disabled
INTA2
0
‐
2
LAN
Disabled
3
(not
used)
Enabled
4
Business
‐
critical
LAN
Enabled
others
(not
used)
Disabled
CN 4093(config)#
cee enable
CN 4093(config)#
cee port INTA1 pfc priority 3 enable
(FCoE
priority)
CN 4093(config)#
cee port INTA1 pfc priority 3 description "FCoE"
(Optional)
CN 4093(config)#
cee port EXT22 pfc priority 3 enable
(FCoE
priority)
CN 4093(config)#
cee port EXT22 pfc priority 3 description "FCoE"
(Optional)
Summary of Contents for Flex System Fabric CN4093
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