Cisco Nexus 1000V Quality of Service Configuration Guide, Release 4.2(1)SV2(2.1)

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Cisco Nexus 1000V Quality of Service Configuration Guide, Release 4.2(1)SV2(2.1)

Chapter Title

Monitoring QoS Statistics

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Updated:: January 13, 2016

Chapter: Monitoring QoS Statistics

Contents

Monitoring QoS Statistics
Information About QoS Statistics
Prerequisites for Monitoring QoS Statistics
Enabling QoS Statistics
Displaying QoS Statistics
Clearing QoS Statistics
Configuration Example for QoS Statistics
Standards
MIBs
RFCs
Technical Assistance
Feature History for QoS Statistics

Monitoring QoS Statistics

This chapter contains the following sections:

Information About QoS Statistics
Prerequisites for Monitoring QoS Statistics
Enabling QoS Statistics
Displaying QoS Statistics
Clearing QoS Statistics
Configuration Example for QoS Statistics
Standards
MIBs
RFCs
Technical Assistance
Feature History for QoS Statistics

Information About QoS Statistics

Statistics are maintained for each policy, class action, and match criteria per interface. You can enable or disable the collection of statistics globally using the [no] qos statistics command. You can display statistics using the show policy-map interface command, and you can clear statistics based on an interface or policy map with the clear qos statistics command. Statistics are enabled by default and can be disabled globally.

Prerequisites for Monitoring QoS Statistics

You are logged in to the CLI in EXEC mode.

Enabling QoS Statistics

You can enable or disable QoS statistics for all interfaces on the device.

Note

By default, QoS statistics are enabled.

SUMMARY STEPS

1. switch# configure terminal

2. switch(config)# qos statistics

3. (Optional) switch(config)# show policy-map interface

4. (Optional) switch(config)# copy running-config startup-config

DETAILED STEPS

	Command or Action	Purpose
Step 1	switch# configure terminal	Enters global configuration mode.
Step 2	switch(config)# qos statistics	Enables QoS statistics on all interfaces.
Step 3	switch(config)# show policy-map interface	(Optional) Displays the status of the global statistics and the configured policy maps on all interfaces.
Step 4	switch(config)# copy running-config startup-config	(Optional) Saves the running configuration persistently through reboots and restarts by copying it to the startup configuration.

This example shows how to enable QoS statistics:

switch# configure terminal
switch(config)# qos statistics
switch(config)# show policy-map interface
Global statistics status :   enabled

Vethernet1

  Service-policy (qos) input:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      1 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      1 packets 

  Service-policy (qos) output:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      9 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      18645 packets 

Vethernet2

  Service-policy (qos) output:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      18636 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      19191 packets 

Vethernet3

  Service-policy (qos) output:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      9 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      18644 packets 

Vethernet4

  Service-policy (qos) input:   1r2c 
    policy statistics status:   enabled

    Class-map (qos):   mat-dscp0 (match-all)
      568738560 packets 
      Match: dscp 0
      police cir 90 mbps bc 200 ms 
        conformed 37578738384 bytes, 0 bps action: set-dscp-transmit 10 
        violated 0 bytes, 0 bps action: drop 

  Service-policy (qos) output:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      9 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      18642 packets 
switch(config)# copy running-config startup-config

Displaying QoS Statistics

Before You Begin

You know the interface for which statistics are needed.

Note

Statistics for individual interfaces are often the most useful.

SUMMARY STEPS

DETAILED STEPS

	Command or Action	Purpose
Step 1	switch# show policy-map [policy-map-name \| interface [brief \| ethernet interface_number \| output type qos \| port-channel number \| vethernet interface_number \| input type qos] \| type qos]	Displays the specified statistics. To achieve the best result when your system has a large number of policies, use this command with specific arguments, such as specifying a particular interface or port channel. Use the interface keyword with the following keywords to display the service policy on an interface: brief—Displays a brief report of all policies attached to interfaces. ethernet—Displays statistics for an Ethernet interface. input type qos—Displays statistics for QoS input policies. output type qos—Displays statistics for QoS output policies. port-channel—Displays statistics for a port channel interface. vethernet—Displays the statistics for a vEthernet interface. Use the type qos keyword to display the type of policy map.

Command or Action

Purpose

Step 1

Displays the specified statistics.

To achieve the best result when your system has a large number of policies, use this command with specific arguments, such as specifying a particular interface or port channel.

Use the interface keyword with the following keywords to display the service policy on an interface:
- brief—Displays a brief report of all policies attached to interfaces.
- ethernet—Displays statistics for an Ethernet interface.
- input type qos—Displays statistics for QoS input policies.
- output type qos—Displays statistics for QoS output policies.
- port-channel—Displays statistics for a port channel interface.
- vethernet—Displays the statistics for a vEthernet interface.

Use the type qos keyword to display the type of policy map.

This example shows how to display QoS statistics:

switch (config)# show policy-map interface port-channel 1

Global statistics status :   enabled

port-channel1

  Service-policy (qos) input:   2rate3clr 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      14 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      police cir 300 kbps bc 200 ms pir 750 kbps be 200 ms 
        conformed 1260 bytes, 4384 bps action: set-cos-transmit 4 
        exceeded 0 bytes, 0 bps action: set dscp dscp table cir-markdown-map 
        violated 0 bytes, 0 bps action: set dscp dscp table pir-markdown-map 

switch(config-if)# show policy-map interface vethernet 1


Global statistics status :   enabled

Vethernet1

  Service-policy (qos) input:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      1 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      1 packets 

  Service-policy (qos) output:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      9 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      19074 packets

Clearing QoS Statistics

SUMMARY STEPS

1. switch # clear qos statistics [interface {ethernet interface_number | port-channel number | vethernet interface_number | output type qos | input type qos}]

DETAILED STEPS

	Command or Action	Purpose
Step 1	switch # clear qos statistics [interface {ethernet interface_number \| port-channel number \| vethernet interface_number \| output type qos \| input type qos}]	Clears the specified QoS statistics.

This example shows how to clear QoS statistics:

switch(config)# clear qos statistics interface port-channel 1
switch# show policy-map interface port-channel 1
Global statistics status : enabled
port-channel1
Service-policy (qos) input: 2rate3clr
policy statistics status: enabled
Class-map (qos): class1 (match-all)
0 packets
Match: access-group testacl1
Match: packet length 3-6000
police cir 300 kbps bc 200 ms pir 750 kbps be 200 ms
conformed 0 bytes, 0 bps action: set-cos-transmit 4
exceeded 0 bytes, 0 bps action: set dscp dscp table cir-markdown-map
violated 0 bytes, 0 bps action: set dscp dscp table pir-markdown-map
switch#

Configuration Example for QoS Statistics

This example shows how to display statistics for policy maps that are configured on interfaces:

switch(config)# show policy-map interface

Global statistics status :   enabled

Vethernet3

  Service-policy (qos) input:   new-policy 
    policy statistics status:   enabled

    Class-map (qos):   class-default (match-any)
      59610700 packets 
      set prec 5

Vethernet5

  Service-policy (qos) output:   new-policer 
    policy statistics status:   enabled

    Class-map (qos):   new-class (match-all)
      344661013 packets 
      Match: precedence 5
      police cir 900 mbps bc 200 ms 
        conformed 505953339796 bytes, 899924196 bps action: transmit 
        violated 12285218014 bytes, 22283000 bps action: drop

This example shows how to display the status of the global statistics and the configured policy maps on a specific interface:

switch(config)# show policy-map interface vethernet 3

Global statistics status :   enabled

Vethernet3

  Service-policy (qos) input:   policy-protoacl
    policy statistics status:   enabled

    Class-map (qos):   class-protoacl (match-any)
      132 packets 
      Match: access-group protoacl
        132 packets 
      set qos-group 100

Standards

No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature.

MIBs

MIBS	MIBs Link
CISCO-PROCESS-MIB	To locate and download MIBs, go to the following URL: http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml

RFCs

No RFCs are supported by this feature.

Technical Assistance

Description	Link
Technical Assistance Center (TAC) home page, contains 30,000 pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content.	http://www.cisco.com/cisco/web/support/index.html

Feature History for QoS Statistics

This section provides the QoS statistics release history.

Feature Name	Release	Feature Information
QoS Statistics	4.0	This feature was introduced

Monitoring QoS Statistics

Contents
Monitoring QoS Statistics
Information About QoS Statistics
Prerequisites for Monitoring QoS Statistics
Enabling QoS Statistics
Displaying QoS Statistics
Clearing QoS Statistics
Configuration Example for QoS Statistics
Standards
MIBs
RFCs
Technical Assistance
Feature History for QoS Statistics
Monitoring QoS Statistics

This chapter contains the following sections:

Information About QoS Statistics
Prerequisites for Monitoring QoS Statistics
Enabling QoS Statistics
Displaying QoS Statistics
Clearing QoS Statistics
Configuration Example for QoS Statistics
Standards
MIBs
RFCs
Technical Assistance
Feature History for QoS Statistics

Information About QoS Statistics

Statistics are maintained for each policy, class action, and match criteria per interface. You can enable or disable the collection of statistics globally using the [no] qos statistics command. You can display statistics using the show policy-map interface command, and you can clear statistics based on an interface or policy map with the clear qos statistics command. Statistics are enabled by default and can be disabled globally.

Prerequisites for Monitoring QoS Statistics

You are logged in to the CLI in EXEC mode.
Enabling QoS Statistics
You can enable or disable QoS statistics for all interfaces on the device.

Note
By default, QoS statistics are enabled.

SUMMARY STEPS
1.    switch# configure terminal

2.    switch(config)# qos statistics

3.    (Optional) switch(config)# show policy-map interface

4.    (Optional) switch(config)# copy running-config startup-config

DETAILED STEPS
Command or Action Purpose
Step 1 switch# configure terminal
Enters global configuration mode.

Step 2 switch(config)# qos statistics
Enables QoS statistics on all interfaces.

Step 3 switch(config)# show policy-map interface (Optional)
Displays the status of the global statistics and the configured policy maps on all interfaces.

Step 4 switch(config)# copy running-config startup-config (Optional)
Saves the running configuration persistently through reboots and restarts by copying it to the startup configuration.
This example shows how to enable QoS statistics:
switch# configure terminal
switch(config)# qos statistics
switch(config)# show policy-map interface
Global statistics status :   enabled

Vethernet1

  Service-policy (qos) input:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      1 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      1 packets 

  Service-policy (qos) output:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      9 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      18645 packets 

Vethernet2

  Service-policy (qos) output:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      18636 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      19191 packets 

Vethernet3

  Service-policy (qos) output:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      9 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      18644 packets 

Vethernet4

  Service-policy (qos) input:   1r2c 
    policy statistics status:   enabled

    Class-map (qos):   mat-dscp0 (match-all)
      568738560 packets 
      Match: dscp 0
      police cir 90 mbps bc 200 ms 
        conformed 37578738384 bytes, 0 bps action: set-dscp-transmit 10 
        violated 0 bytes, 0 bps action: drop 

  Service-policy (qos) output:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      9 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      18642 packets 
switch(config)# copy running-config startup-config
Displaying QoS Statistics
Before You Begin
You know the interface for which statistics are needed.

Note
Statistics for individual interfaces are often the most useful.

SUMMARY STEPS
1. switch# show policy-map [policy-map-name | interface [brief | ethernet interface_number | output type qos | port-channel number | vethernet interface_number | input type qos] | type qos]

DETAILED STEPS
Command or Action Purpose
Step 1 switch# show policy-map [policy-map-name | interface [brief | ethernet interface_number | output type qos | port-channel number | vethernet interface_number | input type qos] | type qos]
Displays the specified statistics.

To achieve the best result when your system has a large number of policies, use this command with specific arguments, such as specifying a particular interface or port channel.

Use the interface keyword with the following keywords to display the service policy on an interface:

brief—Displays a brief report of all policies attached to interfaces.

ethernet—Displays statistics for an Ethernet interface.

input type qos—Displays statistics for QoS input policies.

output type qos—Displays statistics for QoS output policies.

port-channel—Displays statistics for a port channel interface.

vethernet—Displays the statistics for a vEthernet interface.

Use the type qos keyword to display the type of policy map.
This example shows how to display QoS statistics:
switch (config)# show policy-map interface port-channel 1

Global statistics status :   enabled

port-channel1

  Service-policy (qos) input:   2rate3clr 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      14 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      police cir 300 kbps bc 200 ms pir 750 kbps be 200 ms 
        conformed 1260 bytes, 4384 bps action: set-cos-transmit 4 
        exceeded 0 bytes, 0 bps action: set dscp dscp table cir-markdown-map 
        violated 0 bytes, 0 bps action: set dscp dscp table pir-markdown-map 

switch(config-if)# show policy-map interface vethernet 1


Global statistics status :   enabled

Vethernet1

  Service-policy (qos) input:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      1 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      1 packets 

  Service-policy (qos) output:   policy1 
    policy statistics status:   enabled

    Class-map (qos):   class1 (match-all)
      9 packets 
      Match: access-group testacl1
      Match: packet length 3-6000
      set dscp af31 

    Class-map (qos):   class-default (match-any)
      19074 packets 
Clearing QoS Statistics
SUMMARY STEPS
1. switch # clear qos statistics [interface {ethernet interface_number | port-channel number | vethernet interface_number | output type qos | input type qos}]

DETAILED STEPS
Command or Action Purpose
Step 1 switch # clear qos statistics [interface {ethernet interface_number | port-channel number | vethernet interface_number | output type qos | input type qos}]
Clears the specified QoS statistics.
This example shows how to clear QoS statistics:
switch(config)# clear qos statistics interface port-channel 1
switch# show policy-map interface port-channel 1
Global statistics status : enabled
port-channel1
Service-policy (qos) input: 2rate3clr
policy statistics status: enabled
Class-map (qos): class1 (match-all)
0 packets
Match: access-group testacl1
Match: packet length 3-6000
police cir 300 kbps bc 200 ms pir 750 kbps be 200 ms
conformed 0 bytes, 0 bps action: set-cos-transmit 4
exceeded 0 bytes, 0 bps action: set dscp dscp table cir-markdown-map
violated 0 bytes, 0 bps action: set dscp dscp table pir-markdown-map
switch#
Configuration Example for QoS Statistics
This example shows how to display statistics for policy maps that are configured on interfaces:
switch(config)# show policy-map interface

Global statistics status :   enabled

Vethernet3

  Service-policy (qos) input:   new-policy 
    policy statistics status:   enabled

    Class-map (qos):   class-default (match-any)
      59610700 packets 
      set prec 5

Vethernet5

  Service-policy (qos) output:   new-policer 
    policy statistics status:   enabled

    Class-map (qos):   new-class (match-all)
      344661013 packets 
      Match: precedence 5
      police cir 900 mbps bc 200 ms 
        conformed 505953339796 bytes, 899924196 bps action: transmit 
        violated 12285218014 bytes, 22283000 bps action: drop 
This example shows how to display the status of the global statistics and the configured policy maps on a specific interface:
switch(config)# show policy-map interface vethernet 3

Global statistics status :   enabled

Vethernet3

  Service-policy (qos) input:   policy-protoacl
    policy statistics status:   enabled

    Class-map (qos):   class-protoacl (match-any)
      132 packets 
      Match: access-group protoacl
        132 packets 
      set qos-group 100
Standards

No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature.

MIBs

MIBS MIBs Link

CISCO-PROCESS-MIB
To locate and download MIBs, go to the following URL: http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml

RFCs

No RFCs are supported by this feature.

Technical Assistance

Description

Link

Technical Assistance Center (TAC) home page, contains 30,000 pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content.
http://www.cisco.com/cisco/web/support/index.html

Feature History for QoS Statistics

This section provides the QoS statistics release history.

Feature Name

Release

Feature Information

QoS Statistics

4.0

This feature was introduced

	Command or Action	Purpose
Step 1	switch# show policy-map [policy-map-name \| interface [brief \| ethernet interface_number \| output type qos \| port-channel number \| vethernet interface_number \| input type qos] \| type qos]	Displays the specified statistics. To achieve the best result when your system has a large number of policies, use this command with specific arguments, such as specifying a particular interface or port channel. Use the interface keyword with the following keywords to display the service policy on an interface: brief—Displays a brief report of all policies attached to interfaces. ethernet—Displays statistics for an Ethernet interface. input type qos—Displays statistics for QoS input policies. output type qos—Displays statistics for QoS output policies. port-channel—Displays statistics for a port channel interface. vethernet—Displays the statistics for a vEthernet interface. Use the type qos keyword to display the type of policy map.

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