Qos Initiation For Data Traffic; About Class Map Creation; Creating A Class Map - HP Cisco MDS 9020 - Fabric Switch Configuration Manual

Chapter 56 Configuring Fabric Congestion Control and 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

QoS Initiation for Data Traffic

By default, the QoS data traffic feature is disabled for data traffic. To configure QoS for data traffic, you
must first enable the data traffic feature in the switch.
QoS is supported in interoperability mode—its effectiveness depends on the location of Cisco MDS
Tip
9000 Family switches in the fabric relative to the location of the source or destination of the prioritized
devices.
To enable the QoS data traffic feature, follow these steps:
Command
Step 1
switch# config t
Step 2
switch(config)# qos enable
switch(config)# no qos enable

About Class Map Creation

Use the class map feature to create and define a traffic class with match criteria to identify traffic
belonging to that class. The class map name is restricted to 63 alphanumeric characters and defaults to
the match-all option. Flow-based traffic uses one of the following values:
•
•
•
Tip The order of entries to be matched within a class map is not significant.

Creating a Class Map

Use the class-map command to create and define a traffic class with match criteria to identify traffic
belonging to that class. Define each match criterion with one match statement from the class map
configuration (
•
•
•
OL-16184-01, Cisco MDS SAN-OS Release 3.x
WWN—The source WWN or the destination WWN.
Fibre Channel ID (FC ID) —The source ID (SID) or the destination ID (DID). The possible values
for mask are FFFFFF (the entire FC ID is used—this is the default), FFFF00 (only domain and area
FC ID is used), or FF0000 (only domain FC ID is used).
Note An SID or DID of 0x000000 is not allowed.
Source interface—The ingress interface.
switch(config-cmap))
Use the source-wwn option to specify the source WWN or the destination-wwn option to specify
the destination WWN.
Use the source-address option to specify the source ID (SID) or the destination-address option to
specify the destination ID (DID).
Use the input-interface option to specify the ingress interface.
Purpose
Enters configuration mode.
Enables QoS. You can now configure data traffic parameters.
Removes the currently applied QoS configuration and disables
QoS. You can no longer configure data traffic parameters.
mode.
Cisco MDS 9000 Family CLI Configuration Guide
QoS
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