Cisco Nexus 1000V Quality of Service Configuration Guide, Release 4.0(4)SV1(1)
Configuring Statistics
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Table of Contents

Monitoring QoS Statistics

Information about QoS Statistics

Prerequisites for Monitoring QoS Statistics

Enabling Statistics

Displaying Statistics

Clearing Statistics

Example Policy Map Statistics

Example Policer Statistics

Additional References

Related Documents

Standards

MIBs

RFCs

Technical Assistance

Feature History for QoS Statistics

Monitoring QoS Statistics

This chapter describes how to enable, display, and clear 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

Monitoring QoS statistics has the following prerequisites:

  • You are logged in to the CLI in EXEC mode.

Enabling Statistics

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

BEFORE YOU BEGIN

  • By default, QoS statistics are enabled.

SUMMARY STEPS

1. config t

2. qos statistics

3. show policy-map interface

4. copy running-config startup-config

DETAILED STEPS

 

Command
Purpose

Step 1

config t

 

Example:

switch# config t

switch(config)#

Places you into CLI Global Configuration mode.

Step 2

qos statistics

 

Example:

switch(config)# qos statistics

Enables QoS statistics on all interfaces.

Step 3

show policy-map interface

 

Example:

switch(config)# show policy-map interface

(Optional) Displays the statistics status and the configured policy maps on all interfaces.

Step 4

copy running-config startup-config

 

Example:

switch(config)# copy running-config startup-config

(Optional) Saves the running configuration persistently through reboots and restarts by copying it to the startup configuration.

Displaying Statistics

Use this procedure to display QoS statistics for an interface.

BEFORE YOU BEGIN

Before beginning this procedure, you must know or do the following:

  • You know the interface for which statistics are needed.

Note Statistics for individual interfaces are often the most useful.


SUMMARY STEPS

1. 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
Purpose

Step 1

show policy-map { interface { brief | ethernet slot_number | output type qos | port-channel number | vethernet interface_number | input type qos ] type qos | vlan }

 

Example:

switch# show policy-map interface ethernet 2/1

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.

  • interface: Show service policy on interface

brief : Use this option to get a brief report of all policies attached to interfaces.

ethernet : Use this option to get statistics for an Ethernet IEEE 802.3z interface.

input type qos : Use this option to get statistics for QoS input policies.

output type qos : Use this option to get statistics for QoS output policies.

port-channel : Use this option to get statistics for a Port Channel interface.

vethernet : Use this option to get statistics for a Virtual Ethernet interface.

  • type qos: Type of the policy-map

Clearing Statistics

Use this procedure to clear QoS statistics.

SUMMARY STEPS

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

DETAILED STEPS

 

Command
Purpose

Step 1

clear qos statistics interface { brief | ethernet interface_number | slot_number | output type qos | port-channel number | vethernet interface_number | input type qos | type qos ]}

 

Example:

switch# clear qos statistics type qos

Clears the specified QoS statistics.

Example Policy Map Statistics

The following examples show statistics for a policy map.

n1000v(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
 
 
n1000v(config)# show ip access-lists protoacl
 
IP access list protoacl
statistics per-entry
10 permit icmp 7.120.1.10/32 7.120.1.20/32
20 permit tcp 7.120.1.10/32 7.120.1.20/32 dscp af11
30 permit udp 7.120.1.10/32 7.120.1.20/32 precedence critical
50 permit ip 7.120.1.20/32 7.120.1.10/32
60 permit ip 7.120.1.20/32 7.120.1.10/32 dscp af11
70 permit ip 7.120.1.20/32 7.120.1.10/32 precedence critical
 
n1000v(config)# show class-map class-protoacl
 
Type qos class-maps
====================
 
class-map type qos match-any class-protoacl
match access-group name protoacl
 
n1000v(config)# show policy-map policy-protoacl
 
 
Type qos policy-maps
====================
 
policy-map type qos policy-proto acl
class class-protoacl
set qos-group 100
n1000v(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
 

Example Policer Statistics

The following examples show policer statistics.

 
n1000v# show policy-map interface
 
Global statistics status : enabled
 
port-channel1
 
Service-policy (qos) output: new-policer
policy statistics status: enabled
 
Class-map (qos): newsched (match-all)
468595 packets
Match: dscp 10
police cir 900 mbps bc 200 ms
conformed 3508440746 bytes, 896840681 bps action: transmit
violated 56543498 bytes, 14453859 bps action: drop
 
n1000v# show policy-map interface
 
Global statistics status : enabled
 
Vethernet3
 
Service-policy (qos) input: 2r3c
policy statistics status: enabled
 
Class-map (qos): class-default (match-any)
123934 packets
police cir 200 mbps bc 200 ms pir 250 mbps be 200 ms
conformed 514043776 bytes, 197547687 bps action: transmit
exceeded 130494776 bytes, 50149311 bps action: set dscp dscp table cir-markdown-map
violated 67752080 bytes, 26037211 bps action: drop

Additional References

For additional information related to implementing system-level HA features, see the following sections:

Related Documents

 

Related Topic
Document Title

QoS Classification

“Configuring QoS Classification” section

QoS Policies and Marking

“Configuring QoS Marking Policies” section

QoS Overview

“Overview” section

QoS Policing

“Configuring QoS Policing” section

Configuring ACLs

Cisco Nexus 1000V Security Configuration Guide, Release 4.0(4)SV1(1)

Cisco Nexus 1000V commands

Cisco Nexus 1000V Command Reference, Release 4.0(4)SV1(1)

Standards

 

Standards
Title

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

 

RFCs
Title

No RFCs are supported by this feature

Technical Assistance

Description
Link

Technical Assistance Center (TAC) home page, containing 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/public/support/tac/home.shtml

Feature History for QoS Statistics

This section provides the QoS statistics release history.

 

Feature Name
Releases
Feature Information

QoS Statistics

4.0

This feature was introduced.