Configuring Tail Drop By Dscp Values - Cisco Nexus 7000 Series Configuration Manual

Nx-os quality of service configuration guide
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Configuring Tail Drop by DSCP Values

Step 5
Step 6
Step 7
Configuring Tail Drop by DSCP Values
You can configure tail drop on ingress queues by setting thresholds by DSCP values. The device drops packets
that exceed the thresholds. You can specify a threshold based on the queue size or buffer memory that is used
by the queue.
Procedure
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Cisco Nexus 7000 Series NX-OS Quality of Service Configuration Guide
100
Command or Action
switch(config-pmap-c-que)# exit
(Optional) switch(config)# show policy-map
type queuing [policy-map-name |
que-dynamic]
(Optional) switch(config)# copy
running-config startup-config
Command or Action
switch# configure terminal
switch(config)# policy-map type queuing
{queuing-policy-map-name}
switch(config)# class type queuing
class-queuing-name
switch(config-pmap-c-que)# queue-limit dscp
value {queue-size | percent
percent_of_queuelimit}
switch(config-pmap-c-que)# exit
(Optional) switch(config)# show policy-map
type queuing [policy-map-name
(Optional) switch(config)# copy
running-config startup-config
Configuring Queuing and Scheduling on M-Series I/O Modules
Purpose
Exits policy-map queue mode, and enters global
configuration mode.
Displays information about all configured
policy maps or a selected policy map of type
queuing.
Saves the running configuration to the startup
configuration.
Purpose
Enters global configuration mode.
Configures the policy map of type queuing, and
then enters policy-map mode for the policy-map
name you specify.
Configures the class map of type queuing, and
then enters policy-map class queuing mode.
Assigns a tail drop threshold based on the queue
size or percentage of the buffer memory that is
used by the queue. The device drops packets
that exceed the specified threshold.
Repeat Step 4 to assign tail drop thresholds for
other DSCP values.
Repeat Steps 3 through 5 to assign tail drop
thresholds for other DSCP queue classes.
Exits policy-map queue mode, and enters global
configuration mode.
Displays information about all configured
policy maps or a selected policy map of type
queuing.
Saves the running configuration to the startup
configuration.

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