Configuring IP SLAs for Metro-Ethernet
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Configuring IP SLAs for Metro-Ethernet

Last Updated: March 14, 2011

This module describes how to configure an IP Service Level Agreements (SLAs) for Metro-Ethernet to gather network performance metrics in service-provider Ethernet networks. Available statistical measurements for the IP SLAs Ethernet operation include round-trip time, jitter (interpacket delay variance), and packet loss.

Finding Feature Information

Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the Feature Information Table at the end of this document.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

Prerequisites for IP SLAs for Metro-Ethernet

It is recommended that the IEEE 802.1ag standard is supported on the destination devices in order to obtain complete error reporting and diagnostics information.

Restrictions for IP SLAs for Metro-Ethernet

Memory and performance may be impacted for a given Ethernet CFM maintenance domain and Ethernet Virtual Circuit (EVC) or VLAN that has a large number of maintenance endpoints (MEPs).

Information About IP SLAs for Metro-Ethernet

IP SLAs Ethernet Operation Basics

The IP SLAs for Metro-Ethernet integrates IP SLAs with the Ethernet Connectivity Fault Management (CFM) feature. Ethernet CFM is an end-to-end per-service-instance Ethernet-layer operation, administration, and management (OAM) protocol.

The IP SLAs for Metro-Ethernet feature provides the capability to gather statistical measurements by sending and receiving Ethernet data frames between Ethernet CFM maintenance endpoints (MEPs). The performance metrics for IP SLAs Ethernet operations are measured between a source MEP and a destination MEP. Unlike existing IP SLAs operations that provide performance metrics for the IP layer, the IP SLAs Ethernet operation provides performance metrics for Layer 2.

IP SLAs Ethernet operations may be configured using the command-line interface (CLI) or Simple Network Management Protocol (SNMP).

You can manually configure individual Ethernet ping or Ethernet jitter operations by specifying the destination MEP identification number, name of the maintenance domain, and EVC or VLAN identifier or port level option.

You also have the option to configure an IP SLAs auto Ethernet operation (ping or jitter) that will query the Ethernet CFM database for all maintenance endpoints in a given maintenance domain and EVC or VLAN. When an IP SLAs auto Ethernet operation is configured, individual Ethernet ping or Ethernet jitter operations are automatically created based on the MEPs that were discovered. A notification mechanism exists between the IP SLAs and Ethernet CFM subsystems to facilitate the automatic creation of Ethernet ping or Ethernet jitter operations for applicable MEPs that are added to a given maintenance domain and EVC or VLAN while an auto Ethernet operation is running.

The IP SLAs for Metro-Ethernet feature supports multioperation scheduling of IP SLAs operations and proactive threshold violation monitoring through SNMP trap notifications and syslog messages.

Statistics Measured by the IP SLAs Ethernet Operation

The network performance metrics supported by the IP SLAs Ethernet operation is similar to the metrics supported by existing IP SLAs operations. The statistical measurements supported by the IP SLAs Ethernet jitter operation include the following:

  • Jitter (source-to-destination and destination-to-source)
  • Round-trip time latency
  • Unprocessed packets
  • Packet loss (source-to-destination and destination-to-source)
  • Out-of-sequence, tail-dropped, and late packets

How to Configure IP SLAs for Metro-Ethernet


Note
There is no need to configure an IP SLAs responder on the destination device.

Configuring an IP SLAs Auto Ethernet Operation with Endpoint Discovery on the Source Device

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    ip sla ethernet-monitor operation-number

4.    type echo domain domain-name {evc evc-id | vlan vlan-id} [exclude-mpids mp-ids]

5.    type jitter domain domain-name {evc evc-id | vlan vlan-id} [exclude-mpids mp-ids] [interval interframe-interval] [num-frames frames-number]

6.    cos cos-value

7.    owner owner-id

8.    request-data-size bytes

9.    tag text

10.    threshold milliseconds

11.    timeout milliseconds

12.    end

13.    show ip sla ethernet-monitor configuration [operation-number]


DETAILED STEPS
 Command or ActionPurpose
Step 1 enable


Example: 
Router> enable
 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2 configure terminal


Example: 
Router# configure terminal
 

Enters global configuration mode.

 
Step 3 ip sla ethernet-monitor operation-number


Example: 
Router(config)# ip sla ethernet-monitor 1
 

Begins configuration for an IP SLAs auto Ethernet operation and enters IP SLA Ethernet monitor configuration mode.

 
Step 4 type echo domain domain-name {evc evc-id | vlan vlan-id} [exclude-mpids mp-ids]


Example: 
Router(config-ip-sla-ethernet-monitor)# type echo domain testdomain vlan 34
 

For Echo operations only:

Configures an auto Ethernet operation for Ethernet ping operations.

 
Step 5 type jitter domain domain-name {evc evc-id | vlan vlan-id} [exclude-mpids mp-ids] [interval interframe-interval] [num-frames frames-number]


Example: 
Router(config-ip-sla-ethernet-monitor)# type jitter domain testdomain evc testevc interval 20 num-frames 30
 

For Jitter operations only:

Configures an auto Ethernet operation for Ethernet jitter operations.

 
Step 6 cos cos-value


Example: 
Router(config-ip-sla-ethernet-params)# cos 2
 

(Optional) Sets the class of service for an IP SLAs Ethernet operation.

 
Step 7 owner owner-id


Example: 
Router(config-ip-sla-ethernet-params)# owner admin
 

(Optional) Configures the Simple Network Management Protocol (SNMP) owner of an IP SLAs operation.

 
Step 8 request-data-size bytes


Example: 
Router(config-ip-sla-ethernet-params)# request-data-size 64
 

(Optional) Sets the padding size for the data frame of an IP SLAs Ethernet operation.

  • The default value for IP SLAs Ethernet ping operations is 66 bytes.
  • The default value for IP SLAs Ethernet jitter operations is 51 bytes.
 
Step 9 tag text


Example: 
Router(config-ip-sla-ethernet-params)# tag TelnetPollSever1
 

(Optional) Creates a user-specified identifier for an IP SLAs operation.

 
Step 10 threshold milliseconds


Example: 
Router(config-ip-sla-ethernet-params)# threshold 10000
 

(Optional) Sets the upper threshold value for calculating network monitoring statistics created by an IP SLAs operation.

 
Step 11 timeout milliseconds


Example: 
Router(config-ip-sla-ethernet-params)# timeout 10000
 

(Optional) Sets the amount of time an IP SLAs operation waits for a response from its request packet.

 
Step 12 end


Example: 
Router(config-ip-sla-ethernet-params)# end
 

Exits to privileged EXEC configuration mode.

 
Step 13 show ip sla ethernet-monitor configuration [operation-number]


Example: 
Router# show ip sla ethernet-monitor configuration 1
 

(Optional) Displays configuration settings for all IP SLAs auto Ethernet operations or a specified auto Ethernet operation.

 

Manually Configuring an IP SLAs Ethernet Ping or Jitter Operation on the Source Device

SUMMARY STEPS

1.    enable

2.    configure terminal

3.    ip sla operation-number

4.    ethernet echo mpid mp-id domain domain-name {evc evc-id | port | vlan vlan-id}

5.    ethernet jitter mpid mp-id domain domain-name {evc evc-id | port | vlan vlan-id} [interval interframe-interval] [num-frames frames-number]

6.    cos cos-value

7.    frequency seconds

8.    history history-parameter

9.    owner owner-id

10.    request-data-size bytes

11.    tag text

12.    threshold milliseconds

13.    timeout milliseconds

14.    end

15.    show ip sla configuration [operation-number]

16.    show ip sla application


DETAILED STEPS
 Command or ActionPurpose
Step 1 enable


Example: 
Router> enable
 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2 configure terminal


Example: 
Router# configure terminal
 

Enters global configuration mode.

 
Step 3 ip sla operation-number


Example: 
Router(config)# ip sla 1
 

Begins configuration for an IP SLAs operation and enters IP SLA configuration mode.

 
Step 4 ethernet echo mpid mp-id domain domain-name {evc evc-id | port | vlan vlan-id}


Example: 
Router(config-ip-sla)# ethernet echo mpid 23 domain testdomain vlan 34
 

For a ping operation only:

Configures the IP SLAs operation as an Ethernet ping operation and enters Ethernet echo configuration mode.

 
Step 5 ethernet jitter mpid mp-id domain domain-name {evc evc-id | port | vlan vlan-id} [interval interframe-interval] [num-frames frames-number]


Example: 
Router(config-ip-sla)# ethernet jitter mpid 23 domain testdomain evc testevc interval 20 num-frames 30
 

For a jitter operation only:

Configures the IP SLAs operation as an Ethernet jitter operation and enters Ethernet jitter configuration mode.

 
Step 6 cos cos-value


Example: 
Router(config-ip-sla-ethernet-echo)# cos 2
 

(Optional) Sets the class of service for an IP SLAs Ethernet operation.

Note    For this and the remaining steps, the configuration mode shown in the example is for the Ethernet echo operation. However, the commands are the same in the Ethernet jitter configuration mode.
 
Step 7 frequency seconds


Example: 
Router(config-ip-sla-ethernet-echo)# frequency 30
 

(Optional) Sets the rate at which a specified IP SLAs operation repeats.

 
Step 8 history history-parameter


Example: 
Router(config-ip-sla-ethernet-echo)# history hours-of-statistics-kept 3
 

(Optional) Specifies the parameters used for gathering statistical history information for an IP SLAs operation.

 
Step 9 owner owner-id


Example: 
Router(config-ip-sla-ethernet-echo)# owner admin
 

(Optional) Configures the Simple Network Management Protocol (SNMP) owner of an IP SLAs operation.

 
Step 10 request-data-size bytes


Example: 
Router(config-ip-sla-ethernet-echo)# request-data-size 64
 

(Optional) Sets the padding size for the data frame of an IP SLAs Ethernet operation.

The default value for IP SLAs Ethernet ping operations is 66 bytes. The default value for IP SLAs Ethernet jitter operations is 51 bytes.

 
Step 11 tag text


Example: 
Router(config-ip-sla-ethernet-echo)# tag TelnetPollSever1
 

(Optional) Creates a user-specified identifier for an IP SLAs operation.

 
Step 12 threshold milliseconds


Example: 
Router(config-ip-sla-ethernet-echo)# threshold 10000
 

(Optional) Sets the upper threshold value for calculating network monitoring statistics created by an IP SLAs operation.

 
Step 13 timeout milliseconds


Example: 
Router(config-ip-sla-ethernet-echo)# timeout 10000
 

(Optional) Sets the amount of time an IP SLAs operation waits for a response from its request packet.

 
Step 14 end


Example: 
Router(config-ip-sla-ethernet-echo)# end
 

Exits to privileged EXEC mode.

 
Step 15 show ip sla configuration [operation-number]


Example: 
Router# show ip sla configuration 1
 

(Optional) Displays configuration values including all defaults for all IP SLAs operations or a specified operation.

 
Step 16 show ip sla application


Example: 
Router# show ip sla application
 

(Optional) Displays global information about supported IP SLAs features.

 

Scheduling IP SLAs Operations


Note
  • All IP SLAs operations to be scheduled must be already configured.
  • The frequency of all operations scheduled in an operation group must be the same unless you are enabling the random scheduler option for a multioperation scheduler.
SUMMARY STEPS

1.    enable

2.    configure terminal

3.    ip sla ethernet-monitor schedule operation-number schedule-period seconds [frequency [seconds]] [start-time {after hh : mm : ss | hh : mm[: ss] [month day | day month] | now | pending}]

4.    ip sla schedule operation-number [life {forever | seconds}] [start-time {hh : mm[: ss] [month day | day month] | pending | now | after hh : mm : ss}] [ageout seconds] [recurring]

5.    ip sla group schedule group-operation-number operation-id-numbers schedule-period schedule-period-range [ageout seconds] [frequency group-operation-frequency] [life{forever | seconds}] [start-time{hh:mm[:ss] [month day | day month] | pending | now | after hh:mm:ss}]

6.    exit

7.    show ip sla group schedule

8.    show ip sla configuration


DETAILED STEPS
 Command or ActionPurpose
Step 1 enable


Example: 
Router> enable
 

Enables privileged EXEC mode.

  • Enter your password if prompted.
 
Step 2 configure terminal


Example: 
Router# configure terminal
 

Enters global configuration mode.

 
Step 3 ip sla ethernet-monitor schedule operation-number schedule-period seconds [frequency [seconds]] [start-time {after hh : mm : ss | hh : mm[: ss] [month day | day month] | now | pending}]


Example: 
Router(config)# ip sla ethernet-monitor schedule 10 schedule-period 60 start-time now
 

For individual auto Ethernet operations only:

Configures scheduling parameters for an IP SLAs auto Ethernet operation.

 
Step 4 ip sla schedule operation-number [life {forever | seconds}] [start-time {hh : mm[: ss] [month day | day month] | pending | now | after hh : mm : ss}] [ageout seconds] [recurring]


Example: 
Router(config)# ip sla schedule 1 start-time now life forever
 

For individual IP SLAs operations only:

Configures the scheduling parameters for an individual IP SLAs operation.

 
Step 5 ip sla group schedule group-operation-number operation-id-numbers schedule-period schedule-period-range [ageout seconds] [frequency group-operation-frequency] [life{forever | seconds}] [start-time{hh:mm[:ss] [month day | day month] | pending | now | after hh:mm:ss}]


Example: 
Router(config)# ip sla group schedule 1 3,4,6-9
 

For mulioperation scheduler only:

Specifies an IP SLAs operation group number and the range of operation numbers to be scheduled in global configuration mode.

 
Step 6 exit


Example: 
Router(config)# exit
 

Exits to the privileged EXEC mode.

 
Step 7 show ip sla group schedule


Example: 
Router# show ip sla group schedule
 

(Optional) Displays the IP SLAs group schedule details.

 
Step 8 show ip sla configuration


Example: 
Router# show ip sla configuration
 

(Optional) Displays the IP SLAs configuration details.

 

Troubleshooting Tips

Use the debug ip sla trace and debug ip sla error commands to help troubleshoot issues with an individual IP SLAs Ethernet ping or Ethernet jitter operation. Use the debug ip sla ethernet-monitor command to help troubleshoot issues with an IP SLAs auto Ethernet operation.

What to Do Next

To add proactive threshold conditions and reactive triggering for generating traps, or for starting another operation, to an IP SLAs operation, see the "Configuring Proactive Threshold Monitoring" section.

To view and interpret the results of an IP SLAs operation use the show ip sla statistics command. Checking the output for fields that correspond to criteria in your service level agreement will help you determine whether the service metrics are acceptable.

Configuration Examples for IP SLAs for Metro-Ethernet

Example IP SLAs Auto Ethernet Operation with Endpoint Discovery

The following examples shows the operation parameters, proactive threshold monitoring, and scheduling options for an IP SLAs auto Ethernet operation. In Configuration A, operation 10 is configured to automatically create IP SLAs Ethernet ping operations for all the discovered maintenance endpoints in the domain named testdomain and VLAN identification number 34. In Configuration B, operation 20 is configured to automatically create IP SLAs Ethernet ping operations for all the discovered maintenance endpoints in the domain named testdomain and EVC identified as testevc. In both configurations, the proactive threshold monitoring configuration specifies that when three consecutive connection loss events occur, an SNMP trap notification should be sent. The schedule period for operation 10 and operation 20 is 60 seconds, and both operations are scheduled to start immediately.

Configuration A

ip sla ethernet-monitor 10
 type echo domain testdomain vlan 34
!
ip sla ethernet-monitor reaction-configuration 10 react connectionLoss threshold-type consecutive 3 action-type trapOnly
!
ip sla ethernet-monitor schedule 10 schedule-period 60 start-time now

Configuration B

ip sla ethernet-monitor 20
 type echo domain testdomain evc testevc
!
ip sla ethernet-monitor reaction-configuration 20 react connectionLoss threshold-type consecutive 3 action-type trapOnly
!
ip sla ethernet-monitor schedule 20 schedule-period 60 start-time now

Example Individual IP SLAs Ethernet Ping Operation

The following example show the configuration for an IP SLAs Ethernet ping operation. In Configuration C, the maintenance endpoint identification number is 23, the maintenance domain name is testdomain, and the VLAN identification number is 34. In Configuration D, the maintenance endpoint identification number is 23, the maintenance domain name is testdomain, and the EVC is identified as testevc. In both configurations, the proactive threshold monitoring configuration specifies that when three consecutive connection loss events occur, an SNMP trap notification should be sent. Operation 1 and operation 5 are scheduled to start immediately.

Configuration C

ip sla 1
 ethernet echo mpid 23 domain testdomain vlan 34
!
ip sla reaction-configuration 1 react connectionLoss threshold-type consecutive 3 action-type trapOnly
!
ip sla schedule 1 start-time now

Configuration D

ip sla 5
 ethernet echo mpid 23 domain testdomain evc testevc
!
ip sla reaction-configuration 5 react connectionLoss threshold-type consecutive 3 action-type trapOnly
!
ip sla schedule 5 start-time now

Additional References

Related Documents

Related Topic

Document Title

Cisco IOS commands

Cisco IOS Master Commands List, All Releases

Cisco IOS IP SLAs commands

Cisco IOS IP SLAs Command Reference

Ethernet CFM

Configuring Ethernet Connectivity Fault Management in a Service Provider Network module of the Cisco IOS Carrier Ethernet Configuration Guide

Multioperation scheduling for Cisco IOS IP SLAs

Configuring a Multiple Operation Scheduler module of the Cisco IOS IP SLAs Configuration Guide

Proactive threshold monitoring for Cisco IOS IP SLAs

Configuring Proactive Threshold Monitoring of IP SLAs Operations module of the Cisco IOS IP SLAs Configuration Guide

Standards

Standard

Title

IEEE 802.1ag

Connectivity Fault Management

MIBs

MIB

MIBs Link

  • CISCO-RTTMON-MIB
  • CISCO-IPSLA-ETHERNET-MIB

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:

http://www.cisco.com/go/mibs

RFCs

RFC

Title

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

--

Technical Assistance

Description

Link

The Cisco Support and Documentation website provides online resources to download documentation, software, and tools. Use these resources to install and configure the software and to troubleshoot and resolve technical issues with Cisco products and technologies. Access to most tools on the Cisco Support and Documentation website requires a Cisco.com user ID and password.

http://www.cisco.com/cisco/web/support/index.html

Feature Information for IP SLAs for Metro-Ethernet

The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.

Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to http://www.cisco.com/go/cfn. An account on Cisco.com is not required.

Table 1 Feature Information for IP SLAs for Metro-Ethernet

Feature Name

Releases

Feature Information

IP SLAs for Metro-Ethernet

12.2(33)SB 12.2(33)SRB 12.2(33)SXI 12.4(20)T 15.0(1)S

The IP Service Level Agreements (SLAs) for Metro-Ethernet feature provides the capability to gather Ethernet-layer network performance metrics. Available statistical measurements for the IP SLAs Ethernet operation include round-trip time, jitter (interpacket delay variance), and packet loss.

IP SLAs Metro-Ethernet 2.0 (EVC)

12.2(33)SRD 15.0(1)S

Support for Ethernet Virtual Circuits (EVCs) was added.

IP SLAs Metro-Ethernet 3.0 (CFM d8.1)

12.2(33)SRE 15.0(1)S

Support for port level statistical measurements was added.

IEEE 802.1ag - D8.1 standard Compliant CFM, IP SLA for Ethernet

15.1(1)T

Support for CFM d8.1 replaced support for CFM d1.0. IP SLAs integration with CFM d1.0 continues to be supported in Cisco IOS Release 15.0M and Cisco IOS Release 12.4(20)T.

Cisco and the Cisco Logo are trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and other countries. A listing of Cisco's trademarks can be found at www.cisco.com/go/trademarks. Third party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1005R)

Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.



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