About Service Policy Definition - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

QoS
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
To create a class map, follow these steps:
Command
Step 1
switch(config)# qos class-map MyClass
match-all
switch(config-cmap)#
switch(config)# qos class-map MyClass
match-any
switch(config-cmap)#
Step 2
switch(config-cmap)# match
destination-address 0x12ee00
switch(config-cmap)# match source-address
0x6d1090 mask 0xFFFFFF
switch(config-cmap)# match destination-wwn
20:01:00:05:30:00:28:df
switch(config-cmap)# match source-wwn
23:15:00:05:30:00:2a:1f
switch(config-cmap)# match
destination-device-alias DocDeviceAlias
switch(config-cmap)# match
source-device-alias DocDeviceAliase
switch(config-cmap)# match input-interface fc
2/1
switch(config-cmap)# no match input-interface
fc 3/5

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.
Refer to
Note
http://www.cisco.com/en/US/tech/tk543/tk757/technologies_tech_note09186a00800949f2.shtml
further information on implementing QoS DSCP values.
Class maps are processed in the order in which they are configured in each policy map.
Note
Cisco MDS 9000 Family CLI Configuration Guide
56-8
Chapter 56 Configuring Fabric Congestion Control and QoS
Purpose
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.
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.
Specifies a destination address match for frames
with the specified destination FC ID.
Specifies a source address and mask match for
frames with the specified source FC ID.
Specifies a destination WWN to match frames.
Specifies a source WWN to match frames.
Specifies a destination device alias to match
frames.
Specifies a source device alias to match frames.
Specifies a source interface to match frames.
Removes a match based on the specified source
interface.
OL-18084-01, Cisco MDS NX-OS Release 4.x
for