S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
56-8
Cisco MDS 9000 Family CLI Configuration Guide
OL-16184-01, Cisco MDS SAN-OS Release 3.x
Chapter 56 Configuring Fabric Congestion Control and QoS
QoS
•
Use the
destination-device-alias
option to specify the distributed device alias.
To create a class map, follow these steps:
About Service Policy Definition
Service policies are specified using policy maps. Policy maps provide an ordered mapping of class maps
to service levels. You can specify multiple class maps within a policy map, and map a class map to a
high, medium, or low service level. The default priority is low. The policy map name is restricted to 63
alphanumeric characters.
As an alternative, you can map a class map to a differentiated services code point (DSCP).The DSCP is
an indicator of the service level for a specified frame. The DSCP value ranges from 0 to 63, and the
default is 0. A DSCP value of 46 is disallowed.
The order of the class maps within a policy map is important to determine the order in which the frame
is compared to class maps. The first matching class map has the corresponding priority marked in the
frame.
Note
Refer to
http://www.cisco.com/warp/public/105/dscpvalues.html#dscpandassuredforwardingclasses
for
further information on implementing QoS DSCP values.
Command
Purpose
Step 1
switch(config)#
qos class-map MyClass
switch(config-cmap)#
Creates a class map called MyClass and places
you in the class-map submode to match all
criteria specified for this class.
switch(config)#
qos class-map MyClass
match-all
switch(config-cmap)#
Specifies a logical AND operator for all
matching statements in this class. If a frame
matches all (default) configured criteria, it
qualifies for this class. This is the default.
switch(config)#
qos class-map MyClass
match-any
switch(config-cmap)#
Specifies a logical OR operator for all matching
statements in this class. If a frame matches any
one configured criteria, it qualifies for this class.
Step 2
switch(config-cmap)#
match
destination-address 0x12ee00
Specifies a destination address match for frames
with the specified destination FC ID.
switch(config-cmap)#
match source-address
0x6d1090 mask 0xFFFFFF
Specifies a source address and mask match for
frames with the specified source FC ID.
Step 3
switch(config-cmap)#
match destination-wwn
20:01:00:05:30:00:28:df
Specifies a destination WWN to match frames.
switch(config-cmap)#
match source-wwn
23:15:00:05:30:00:2a:1f
Specifies a source WWN to match frames.
Step 4
switch(config-cmap)#
match
destination-device-alias DocDeviceAlias
Specifies a destination device alias to match
frames.
Step 5
switch(config-cmap)#
match input-interface fc
2/1
Specifies a source interface to match frames.
Step 6
switch(config-cmap)#
no
match input-interface
fc 3/5
Removes a match based on the specified source
interface.
Содержание 9124 - Cisco MDS Fabric Switch
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