Cisco Nexus 5000 Series - Configuring Egress Policies

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Cisco Nexus 5000 Series Switch CLI Software Configuration Guide
OL-16597-01
Chapter 1 Configuring QoS
Configuring QoS on Interfaces
switch(config)# policy-map policy1
switch(config-pmap)# class best-effort-drop-class
switch(config-pmap-c)# bandwidth percent 20
switch(config)# int eth1/1
switch(config-if)# service-policy input policy1
Configuring Egress Policies
An egress policy is a service policy applied to the outgoing traffic on an Ethernet interface. You can
configure an egress policy to guarantee the bandwidth for the specified traffic class or to configure the
egress queues.
To configure an egress policy, perform this task:
The following example shows that the system class best-effort drop class is guaranteed 20 percent of the
bandwidth on interface eth1/1:
switch(config)# class-map best-effort-drop-class
switch(config-cmap)# match cos 5
switch(config)# policy-map policy1-egress
switch(config-pmap)# class best-effort-drop-class
switch(config-pmap-c)# bandwidth percent 20
switch(config)# int eth1/1
switch(config-if)# service-policy output policy1-egress
Command Purpose
Step 1
switch# configure terminal
Enters configuration mode.
Step 2
switch(config)# class-map class-name
Defines a class name for the egress policy.
Step 3
switch(config)# policy-map policy1-name
Creates a policy map to specify the QoS parameters for
the egress policy.
Step 4
switch(config-pmap)# class class-name
Associates the egress class with this policy and enters
configuration mode for the class.
Step 5
switch(config-pmap-c) bandwidth percent
percentage
Specifies the guaranteed percentage of bandwidth
allocated to this class.
Step 6
switch(config-pmap-c) priority
Specifies that egress traffic in this class is mapped to a
strict priority queue.
Step 7
switch(config)# interface {ethernet
slot/port|port-channel channel-number }
Enters configuration mode for the specified interface.
Note service policy on a port channel overrides any
service policy configuration on individual
member interfaces.
Step 8
switch(config-if)# service-policy output
policy-name
Applies the policy map to the interface.