Information About Marking; Configuring Cos Marking - Cisco Nexus 5000 Series Configuration Manual

Information About Marking

Command or Action
Step 3
switch(config-pmap-que)# class type
queuing class-name
Step 4 switch(config-pmap-c-que)# bandwidth
percent percentage
Step 5 switch(config-pmap-c-que)# no bandwidth
percent percentage
Step 6 switch(config-pmap-c-que)# priority
Step 7 switch(config-pmap-c-que)# no priority
This example shows how to define a type queuing policy map:
switch# configure terminal
switch(config)# policy-map type queuing policy-queue1
switch(config-pmap-que)# class type queuing class-queue1
switch(config-pmap-c-que)# bandwidth 20
Information About Marking
Marking is a method that you use to modify the QoS fields of the incoming and outgoing packets. The QoS
fields that you can mark are CoS, IP precedence, and Differentiated Service Code Point (DSCP).
You can use marking commands in traffic classes that are referenced in a policy map. The marking features
that you can configure are listed below:
• DSCP (Supported only on the Cisco Nexus 5548 switch.)
• IP precedence
• CoS

Configuring CoS Marking

You can set the value of the CoS field in the high-order three bits of the VLAN ID Tag field in the IEEE
802.1Q header.
Cisco Nexus 5000 Series NX-OS Quality of Service Configuration Guide
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Purpose
Associates a class map with the policy map, and enters configuration
mode for the specified system class.
Specifies the guaranteed percentage of interface bandwidth allocated
to this class. By default, no bandwidth is specified for a class.
Before you can successfully allocate bandwidth to the class,
Note
you must first reduce the default bandwidth configuration on
class-default and class-fcoe.
(Optional)
Removes the bandwidth specification from this class.
Specifies that traffic in this class is mapped to a strict priority queue.
Note Only one class in each policy map can have strict priority set
on it.
(Optional)
Removes the strict priority queuing from the traffic in this class.
Configuring QoS
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