Cisco IOS Performance Routing Command Reference

PfR Commands

active-probe (PfR)

To configure a Performance Routing (PfR) active probe for a target prefix, use the active-probe command in PfR master controller configuration mode. To disable the active probe, use the no form of this command.

active-probe probe-type ip-address target-port number [codec codec-name]

no active-probe probe-type ip-address

Syntax Description

Command Default

No active probes are configured.

Command Modes

PfR master controller configuration (config-pfr-mc)

Command History

Usage Guidelines

The active-probe command is entered on a PfR master controller.

This command is used to optionally configure a master controller to command a border router to transmit active probes to a target IP address or prefix. The active probe is used to measure the delay (round-trip response time) of the target prefix to determine the performance of the current exit and to detect if the prefix is out-of-policy. The border router collects these performance statistics from the active probe and transmits this information to the master controller, which uses this information to optimize the prefix and to select the best available exit based on default and user-defined policies. The performance information is applied to the most specific optimized prefix, which includes the active probe host address. If the prefix is optimized and is currently using the best in-policy exit link, the master controller does not take any action.

Active probing requires you to configure a specific host or target address. The target address can also be learned by PfR through the NetFlow or Top Talker and Delay learning functionality. Active probes must be sent out of a PfR-managed external interface, which may or may not be the preferred route for an Optimized Prefix (OP). PfR can be configured to use the following four types of active probes:

•ICMP Echo—A ping is sent to the target address. Configuring an ICMP echo probe does not require knowledgeable cooperation from the target device. However, repeated probing could trigger an Intrusion Detection System (IDS) alarm in the target network. If an IDS is configured in a target network that is not under your administrative control, we recommend that you notify the target network administration entity.

•Jitter—A jitter probe is sent to the target address. A target port number must be specified. A remote responder must be enabled on the target device, regardless of the configured port number. An optional codec value can be configured. The codec value is required for Mean Opinion Score (MOS) calculations.

Note In Cisco IOS Release 15.1(2)T and later releases, when you configure a jitter probe the default codec value, g729a, is not nvgened in the running configuration. In Cisco IOS Release 15.1(1)T, 12.2(33(SRE), 12.2(33)SXH, and prior releases, if you did not specify a codec value while configuring the active-probe jitter command, the default codec value, g729a, was displayed in the output of the show running-config command.

•TCP Connection—A TCP connection probe is sent to the target address. A target port number must be specified. A remote responder must be enabled if TCP messages are configured to use a port number other than TCP well-known port number 23.

•UDP Echo—A UDP echo probe is sent to the target address. A target port number must be specified. A remote responder must be enabled on the target device, regardless of the configured port number.

PfR uses Cisco IOS IP Service Level Agreements (SLAs), a standard feature in Cisco IOS software, to command a border router to transmit an active probe to the target address. No explicit IP SLA configuration is required on the master controller or the border router. Support for IP SLAs is enabled by default when the PfR process is created. However, a remote responder must be enabled on the target device when configuring an active probe using jitter, UDP echo messages, or when configuring an active probe using TCP connection messages that are configured to use a port other than the TCP well-known port number 23. The remote responder is enabled by configuring the ip sla monitor responder global configuration command on the target device.

Note For external BGP (eBGP) peering sessions, the IP address of the eBGP peer must be reachable from the border router via a connected route in order for active probes to be generated.

Examples

The following example configures an active probe using an ICMP reply (ping) message. The 10.4.9.1 address is the target. No explicit configuration is required on the target device.

Router(config)# pfr master

Router(config-pfr-mc)# active-probe echo 10.4.9.1 

The following example configures an active probe using jitter messages. The 10.4.9.2 address is the target. The target port number must be specified when configuring this type of probe, and a remote responder must also be enabled on the target device. An optional codec value of g711alaw is specified to be used for MOS calculations.

Router(config)# pfr master

Router(config-pfr-mc)# active-probe jitter 10.4.9.2 target-port 1001 codec g711alaw

The following example configures an active probe using a TCP connection message. The 10.4.9.3 address is the target. The target port number must be specified when configuring this type of probe.

Router(config)# pfr master

Router(config-pfr-mc)# active-probe tcp-conn 10.4.9.3 target-port 23 

The following example configures an active probe using UDP messages. The 10.4.9.4 address is the target. The target port number must be specified when configuring this type of probe, and a remote responder must also be enabled on the target device.

Router(config)# pfr master

Router(config-pfr-mc)# active-probe udp-echo 10.4.9.4 target-port 1001 

Related Commands

active-probe address source (PfR)

To configure an interface on a Performance Routing (PfR) border router as the source of the active probe, use the active-probe address source command in PfR border router configuration mode. To configure active probing to use a default exit interface, use the no form of this command.

active-probe address source interface type number

no active-probe address source interface

Syntax Description

Command Default

The source IP address is taken from the default PfR external interface that transmits the active probe.

Command Modes

PfR border router configuration (config-pfr-br)

Command History

Usage Guidelines

The active-probe address source command is entered on a border router and allows you to specify the source interface from which active probes are transmitted. When this command is configured, the primary IP address of the specified interface is used as the active probe source. The IP address of the active probe source interface must be unique to ensure that the probe reply is routed back to the specified source interface. If the interface is not configured with an IP address, the active probe will not be generated. If the IP address is changed after the interface has been configured as an active probe source, active probing is stopped and then restarted with the new IP address. If the IP address is removed after the interface has been configured as an active probe source, active probing is stopped and is not restarted until a valid primary IP address is reconfigured.

Note For external Border Gateway Protocol (eBGP) peering sessions, the IP address of the eBGP peer must be reachable from the border router via a connected route in order for active probes to be generated.

Examples

The following example configures Fast Ethernet interface 0/0 as the active probe source:

Router(config)# pfr border 

Router(config-pfr-br)# active-probe address source interface FastEthernet 0/0

The following example configures Gigabit Ethernet interface 0/0/0 as the active probe source:

Router(config)# pfr border 

Router(config-pfr-br)# active-probe address source interface GigabitEthernet 0/0/0

Related Commands

aggregation-type (PfR)

To configure a Performance Routing (PfR) master controller to aggregate learned prefixes based on the type of traffic flow, use the aggregation-type command in PfR Top Talker and Top Delay learning configuration mode. To set learned prefix aggregation to the default type, use the no form of this command.

aggregation-type {bgp | non-bgp | prefix-length prefix-mask}

no aggregation-type

Syntax Descriptionno application define application-name

Command Default

If this command is not configured or if the no form of this command is entered, the default prefix mask for aggregating learned prefixes is 24.

Command Modes

PfR Top Talker and Top Delay learning configuration (config-pfr-mc-learn)

Command History

Usage Guidelines

The aggregation-type command is entered on a master controller. This command is used to configure PfR to aggregate learned prefixes based on the traffic flow type. BGP prefixes or non-BGP prefixes can be aggregated, and traffic flows can be aggregated based on prefix length.

Entering the bgp keyword configures the aggregation of learned prefixes based on prefix entries in the BGP routing table. This keyword is used if internal BGP (iBGP) peering is enabled in the PfR managed network.

Entering the non-bgp keyword configures the aggregation of learned prefixes based on any other routing protocol. Prefix entries that are present in the BGP routing table are ignored when this keyword is entered.

Examples

The following example configures the aggregation of learned BGP prefixes:

Router(config)# pfr master

Router(config-pfr-mc)# learn

Router(config-pfr-mc-learn)# aggregation-type bgp

Related Commands

api provider (PfR)

To register an application programming interface (API) provider with a Performance Routing (PfR) master controller and to enter PfR master controller application interface provider configuration mode, use the api provider command in PfR master controller configuration mode. To unregister the application interface provider, use the no form of this command.

api provider provider-id [priority value]

no api provider provider-id

Syntax Description

Command Default

An API provider is not registered with a PfR master controller.

Command Modes

PfR master controller configuration (config-pfr-mc)

Command History

Usage Guidelines

The PfR application interface defines the mode of communication and messaging between applications and the network for the purpose of optimizing the traffic associated with the applications. A provider is defined as an entity outside the network in which the router configured as a PfR master controller exists, for example, an ISP, or a branch office of the same company. The provider has one or more host devices running one or more applications that use the PfR application interface to communicate with a PfR master controller. A provider must be registered with a PfR master controller before an application on a host device can interface with PfR. Use the api provider command to register the provider, and use the host-address (PfR) command to configure a host device. After registration, a host device in the provider network can initiate a session with a PfR master controller. The PfR application interface provides an automated method for networks to be aware of applications and provides application-aware performance routing.

Use the optional priority keyword to specify a priority value for the provider when multiple providers are registered with PfR. The number 1 assigns the highest priority to any requests through the application interface. If you assign a priority, each provider must be assigned a different priority number. If you try to assign the same priority number to two different providers, an error message is displayed on the console.

Note API provider IDs and API priority values in the range of 1 to 100 are reserved for internal Cisco applications.

Use the show pfr api provider command to view information about the currently registered providers. Use the show pfr master policy command with the dynamic keyword to display information about policies created dynamically by an application using the PfR application interface.

Examples

The following example shows how to register a provider on a master controller. In this example, more than one provider is configured, so the priority is set for each provider. For the single host device configured for provider 101, no priority is set and the default priority value of 65535 is assigned, giving this host device a lower priority than each of the host devices configured for provider 102.

Router(config)# pfr master

Router(config-pfr-mc)# api provider 101

Router(config-pfr-mc-api-provider)# host-address 10.1.2.2 key-chain PFR_HOST

Router(config-pfr-mc-api-provider)# exit

Router(config-pfr-mc)# api provider 102 priority 4000

Router(config-pfr-mc-api-provider)# host-address 10.2.2.2 key-chain PFR_HOST 
priority 3000

Router(config-pfr-mc-api-provider)# host-address 10.2.2.3 key-chain PFR_HOST 
priority 4000 
Router(config-pfr-mc-api-provider)# end

Related Commands

application define (PfR)

To configure a user-defined custom application to be monitored by Performance Routing (PfR), use the application define command in PfR master controller configuration mode. To remove the definition of a user-defined custom application to be monitored by PfR, use the no form of this command.

application define application-name {access-list access-list-name | nbar}

no application define application-name

Syntax Descriptionno application define application-name

Command Default

No custom-defined applications are configured for use with PfR.

Command Modes

PfR master controller configuration (config-pfr-mc)

Command History

Usage Guidelines

The application define command allows a user-defined custom application to be configured on the master controller as an application that can be used in PfR configuration to create a traffic class that can be measured and controlled using PfR techniques. An access list can be used to define the traffic flows to create a custom application.

PfR supports the ability to define a custom application to be identified using NBAR. NBAR includes many defined applications, but a Packet Description Language Module (PDLM) can be used to add a new protocol to the list of supported NBAR applications. A PDLM uses a mapping of static TCP and UDP port numbers to create a custom application. The application defined by a PDLM file must be recognized on a PfR border router and configured on the master controller using the application define command. The PfR master controller makes a request to the border router to determine if the application is supported. Use the show pfr master nbar application command to check if the application is supported on each border router.

To display defined applications, use the show pfr master defined or the show pfr border defined commands.

Examples

The following example, starting in global configuration mode, shows how to define a custom application named ACCESS_DEFINE using an access list. The access list is configured to identify all TCP traffic from any destination or source and from a destination port number of 500.

Router(config)# ip access-list ACCESS_DEFINE

Router(config-ext-nacl)# permit tcp any any 500

Router(config-ext-nacl)# exit

Router(config)# pfr master 

Router(config-pfr-mc)# application define APP_ACCESS access-list ACCESS_DEFINE

Router(config-pfr-mc)# end

The following example, starting in global configuration mode, shows how to define a custom application named APP_NBAR1 to be identified using NBAR and used in PfR configuration to create a traffic class that can be measured and controlled using PfR techniques.

Router(config)# pfr master 

Router(config-pfr-mc)# application define APP_NBAR1 nbar 

Router(config-pfr-mc)# end

Related Commands

backoff (PfR)

To set the backoff timer to adjust the time period for prefix policy decisions, use the backoff command in PfR master controller configuration mode. To set the backoff timer to the default values, use the no form of this command.

backoff min-timer max-timer [step-timer]

no backoff

Syntax Description

Command Default

PfR uses the following default values if this command is not configured or if the no form of this command is entered:

min-timer: 300
max-timer: 3000
step-timer: 300

Command Modes

PfR master controller configuration (config-pfr-mc)

Command History

Usage Guidelines

The backoff command is entered on a PfR master controller. This command is used to adjust the transition period during which the master controller holds an out-of-policy prefix. The master controller waits for the transition period before making an attempt to find an in-policy exit. This command is configured with a minimum and maximum timer value and can be configured with an optional step timer.

The min-timer argument is used to set the minimum transition period in seconds. If the current prefix is in-policy when this timer expires, no change is made and the minimum timer is reset to the default or configured value. If the current prefix is out-of-policy, PfR will move the prefix to an in-policy and reset the minimum timer to the default or configured value.

The max-timer argument is used to set the maximum length of time PfR holds an out-of-policy prefix when there are no PfR controlled in-policy prefixes. If all PfR controlled prefixes are in an out-of-policy state and the value from the max-timer argument expires, PfR will select the best available exit and reset the minimum timer to the default or configured value.

The step-timer argument allows you to optionally configure PfR to add time each time the minimum timer expires until the maximum time limit has been reached. If the maximum timer expires and all PfR managed exits are out-of-policy, PfR will install the best available exit and reset the minimum timer.

Configuring a new timer value will immediately replace the existing value if the new value is less than the time remaining. If the new value is greater than the time remaining, the new timer value will be used when the existing timer value expires.

Examples

The following example sets the minimum timer to 400 seconds, the maximum timer to 4000 seconds, and the step timer to 400 seconds:

Router(config)# pfr master

Router(config-pfr-mc)# backoff 400 4000 400 

Related Commands

border (PfR)

To enter PfR managed border router configuration mode to establish communication with a Performance Routing (PfR) border router, use the border command in PfR master controller configuration mode. To disable communication with the specified border router, use the no form of this command.

border ip-address [key-chain key-name]

no border ip-address

Syntax Description

Command Default

No communication is established between a PfR border router and a master controller.

Command Modes

PfR master controller configuration (config-pfr-mc)

Command History

Usage Guidelines

The border command is entered on a master controller. This command is used to establish communication between a master controller and a border router. Border key-chain configuration is required during initial configuration. Once configured, the key-chain keyword is optional. Communication is established between the master controller and the border router processes to allow the master controller to monitor and control prefixes and exit links. Communication must also be established on the border router using the master command. Passive monitoring in PfR observe mode is enabled by default when communication is established between a PfR border router and a master controller.

At least one border router must be configured to enable PfR. A maximum of ten border routers can be configured to communicate with a single master controller. The IP address that is used to specify the border router must be assigned to an interface that is physically located on the border router and the IP address must be reachable by the master controller.

Communication between the master controller and the border router is protected by key-chain authentication. The authentication key must be configured on both the master controller and the border router before communication can be established. The key-chain configuration is defined in global configuration mode on both the master controller and the border router before key-chain authentication is enabled for master controller to border router communication. For more information about key management in Cisco IOS software, see the "Managing Authentication Keys" section in the "Configuring IP Protocol-Independent Features" chapter of the Cisco IOS IP Routing: Protocol-Independent Configuration Guide.

When the border command is entered, the router enters PfR managed border router configuration mode. Local interfaces must be defined as internal or external using the interface (PfR) command. A single PfR master controller can support up to 20 interfaces.

Enabling a Border Router and Master Controller Process on the Same Router

A Cisco router can be configured to perform in dual operation and run a master controller process and a border router process on the same router. However, this router will use more memory than a router that is configured to run only a border router process. This factor should be considered when selecting a router for dual operation.

Examples

The following example defines a key chain named MASTER in global configuration mode and then configures a master controller to communicate with the 10.4.9.6 border router. The master controller authenticates the border router using the defined key CISCO.

Router(config)# key chain MASTER

Router(config-keychain)# key 1

Router(config-keychain-key)# key-string CISCO

Router(config-keychain-key)# exit

Router(config-keychain)# exit

Router(config)# pfr master

Router(config-pfr-mc)# logging

Router(config-pfr-mc)# border 10.4.9.6 key-chain MASTER

Router(config-pfr-mc-br)# interface FastEthernet0/0 external

Router(config-pfr-mc-br)# interface FastEthernet0/1 internal

Related Commands

clear pfr border

To reset a connection between a Performance Routing (PfR) border router and the PfR master controller, use the clear pfr border command in privileged EXEC mode.

clear pfr border *

Syntax Description

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The clear pfr border command is entered on a border router. The border router and master controller will automatically reestablish communication after this command is entered.

Examples

The following example resets a connection between a border router and a master controller:

Router# clear pfr border *

Related Commands

clear pfr master

To reset a connection between a Performance Routing (PfR) master controller process and all active border router connections, use the clear pfr master command in privileged EXEC mode.

clear pfr master *

Syntax Description

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The clear pfr master command is entered on a master controller. The master controller will restart all configured and default processes and reestablish communication with active border routers after this command is entered.

Examples

The following example resets the master controller process and all active border router connections:

Router# clear pfr master *

Related Commands

clear pfr master border

To reset an active Performance Routing (PfR) border router connection or all connections with a PfR master controller, use the clear pfr master border command in privileged EXEC mode.

clear pfr master border {* | ip-address}

Syntax Description

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The clear pfr master border command is entered on a master controller.

Examples

The following example resets all border router connections to the master controller:

Router# clear pfr master border *

The following example resets a single border router connection to the master controller:

Router# clear pfr master border 10.4.9.6

Related Commands

clear pfr master prefix

To clear Performance Routing (PfR) controlled prefixes from the master controller database, use the clear pfr master prefix command in privileged EXEC mode.

clear pfr master prefix {* | prefix | inside * | learned [inside]}

Syntax Description

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The clear pfr master prefix command is entered on a master controller.

Examples

The following example clears learned prefixes:

Router# clear pfr master prefix learned 

The following example clears all inside prefixes:

Router# clear pfr master prefix inside *

Related Commands

clear pfr master traffic-class

To clear Performance Routing (PfR) controlled traffic classes from the master controller database, use the clear pfr master traffic-class command in privileged EXEC mode.

clear pfr master traffic-class [access-list access-list-name | application application-name [prefix] | inside | learned [delay | inside | list list-name | throughput] | prefix prefix | prefix-list prefix-list-name]

Syntax Description

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The clear pfr master traffic-class command is entered on a master controller. To clear PfR-controlled traffic classes defined by an application identified using Network-Based Application Recognition (NBAR) from the master controller database, use the clear pfr master traffic-class application nbar command.

Table 1 displays the keywords that represent the application that can be configured with the clear pfr master traffic-class command. Replace the application-name argument with the appropriate keyword from the table.

Examples

The following example shows how to clear traffic classes defined by the Secure Shell (SSH) application and the 10.1.1.0/24 prefix:

Router# clear pfr master traffic-class application ssh 10.1.1.0/24

The following example shows how to clear traffic classes that were learned:

Router# clear pfr master traffic-class learned

Related Commands

clear pfr master traffic-class application nbar

To clear Performance Routing (PfR) controlled traffic classes defined by an application identified using Network-Based Application Recognition (NBAR) from the master controller database, use the clear pfr master traffic-class application nbar command in privileged EXEC mode.

clear pfr master traffic-class application nbar [nbar-appl-name [prefix]]

Syntax Description

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The clear pfr master traffic-class application nbar command is entered on a master controller. To clear all other types of PfR-controlled traffic classes from the master controller database, use the clear pfr master traffic-class command.

NBAR is capable of identifying applications based on the following three types of protocols:

•Non-UDP and non-TCP IP protocols—For example, Generic Routing Encapsulation (GRE) and Internet Control Message Protocol (ICMP).

•TCP and UDP protocols that use statically assigned port numbers—For example, CU-SeeMe desktop video conference (CU-SeeMe-Server) and Post Office Protocol over Transport Layer Security (TLS) and Secure Sockets Layer (SSL) server (SPOP3-Server).

•TCP and UDP protocols that dynamically assign port numbers and require stateful inspection—For example, Real-Time Transport Protocol audio streaming (RTP-audio) and BitTorrent File Transfer Traffic (BitTorrent).

Use the clear pfr master traffic-class application nbar ? command to determine if an application can be identified using NBAR and replace the nbar-appl-name argument with the appropriate keyword from the screen display.

The list of applications identified using NBAR and available for profiling PfR traffic classes is constantly evolving. For lists of many of the NBAR applications defined using static or dynamically assigned ports, see the "Performance Routing with NBAR/CCE Application and Recognition" module.

For more details about NBAR, see the "Classifying Network Traffic Using NBAR" section of the Cisco IOS Quality of Service Solutions Configuration Guide.

If the prefix argument is specified, only the PfR-controlled traffic class that matches the application specified by the nbar-appl-name argument and the destination prefix specified by the prefix argument are cleared. If the prefix argument is not specified, all PfR-controlled traffic classes that match the application specified by the nbar-appl-name argument, regardless of the destination prefix, are cleared.

Examples

The following example shows how to determine the keyword that represents an application identified using NBAR in order to clear the PfR traffic classes defined by the application:

Router# clear pfr master traffic-class application nbar ?

The following example shows how to clear PfR traffic classes defined by the RTP-audio application that is identified using NBAR and the 10.1.1.0/24 prefix:

Router# clear pfr master traffic-class application nbar rtp-audio 10.1.1.0/24

The following example shows how to clear all PfR traffic classes defined by applications identified using NBAR:

Router# clear pfr master traffic-class application nbar

Related Commands

cost-minimization (PfR)

To configure Performance Routing (PfR) cost-based optimization policies on a master controller, use the cost-minimization command in PfR border exit interface configuration mode. To disable a cost-based optimization policy, use the no form of this command.

cost-minimization {calc {combined | separate | sum} | discard [daily] {absolute number | percent percentage} | end day-of-month day [offset [-] hh:mm] | fixed fee [cost] | nickname name | sampling period minutes [rollup minutes] | summer-time start end [offset] | tier percentage fee fee}

no cost-minimization {calc | discard | end day-of-month day [offset [-] hh:mm] | fixed fee [cost] | nickname | sampling period | summer-time | tier percentage}

Syntax Description

Command Default

No cost-based optimization policies are configured.

Command Modes

PfR border exit interface configuration (config-pfr-mc-br-if)

Command History

Usage Guidelines

The cost-minimization command is configured on a master controller. Cost-based optimization allows you to configure link policies based on the Internet service provider (ISP) financial cost of each exit link in your network. The cost-minimization command allows you to configure the master controller to send traffic over exit links that provide the most cost-effective bandwidth utilization, while still maintaining the desired performance characteristics.

Examples

The following example, starting in global configuration mode, configures cost-based optimization on a master controller. Cost optimization configuration is applied under the external interface configuration. A policy for a tiered billing cycle is configured. Calculation is configured separately for egress and ingress samples. The time interval between sampling is set to 10 minutes. These samples are configured to be rolled up every 60 minutes. In this example, summer time is configured to start the second week in March on a Sunday at 2 in the morning plus one hour, and to end on Sunday in the first week in November at 2 in the morning minus one hour. The last day of the billing cycle is on the 30th day of the month with an offset of 5 hours added to UTC to adjust for the time zone.

Router(config)# pfr master 

Router(config-pfr-mc)# border 10.5.5.55 key-chain key 

Router(config-pfr-mc-br)# interface Ethernet 0/0 external 

Router(config-pfr-mc-br-if)# cost-minimization nickname ISP1 

Router(config-pfr-mc-br-if)# cost-minimization summer-time 2 Sun Mar 02:00 
1 Sun Nov 02:00 60

Router(config-pfr-mc-br-if)# cost-minimization end day-of-month 30 offset 23:59

Router(config-pfr-mc-br-if)# cost-minimization calc separate 

Router(config-pfr-mc-br-if)# cost-minimization sampling period 10 rollup 60 

Router(config-pfr-mc-br-if)# cost-minimization tier 100 fee 1000

Router(config-pfr-mc-br-if)# cost-minimization tier 90 fee 900 

Router(config-pfr-mc-br-if)# cost-minimization tier 80 fee 800 

Router(config-pfr-mc-br-if)# end

Related Commands

count (PfR)

To set the number of traffic classes to be learned by a learn list during a Performance Routing (PfR) learn session, use the count command in learn list configuration mode. To reset the number of traffic classes to be learned by a learn list to the default values, use the no form of this command.

count number max max-number

no count number max max-number

Syntax Description

Command Default

If this command is not configured, the number of traffic classes to be learned by a learn list during a PfR learn session is set to the default values:
number: 50
max-number: 100

Command Modes

Learn list configuration (config-pfr-mc-learn-list)

Command History

Usage Guidelines

Use this command to set the number of traffic classes that a border router sends to the master controller for a learn list during a PfR learn session. An overall maximum number of traffic classes for a learn list can also be configured.

Examples

In the following example, the number of traffic classes to be learned in the first learn list (remote login traffic class) session is set to 50, and the maximum number of traffic classes to be learned for all sessions of the first learn list is set to 90. The second traffic class for file transfer traffic is configured with a maximum number of traffic classes set to 80, with 40 traffic classes set to be learned in a single session. Starting in global configuration mode, application traffic classes are defined using two PfR learn lists, LEARN_REMOTE_LOGIN_TC and LEARN_FILE_TRANSFER_TC. The remote login traffic class is configured using keywords representing Telnet and Secure Shell (SSH) traffic, and the resulting prefixes are aggregated to a prefix length of 24. The file transfer traffic class is configured using a keyword that represents FTP and is also aggregated to a prefix length of 24. A prefix-list is applied to the file transfer traffic class to permit traffic from the 10.0.0.0/8 prefix. The master controller is configured to learn the top prefixes based on the highest outbound throughput for the filtered traffic, and the resulting traffic classes are added to the PfR application database.

Router(config)# ip prefix-list INCLUDE_10_NET 10.0.0.0/8

Router(config)# pfr master 

Router(config-pfr-mc)# learn 

Router(config-pfr-mc-learn)# list seq 10 refname LEARN_REMOTE_LOGIN_TC

Router(config-pfr-mc-learn-list)# count 50 max 90

Router(config-pfr-mc-learn-list)# traffic-class application telnet ssh

Router(config-pfr-mc-learn-list)# aggregation-type prefix-length 24 

Router(config-pfr-mc-learn-list)# throughput 

Router(config-pfr-mc-learn-list)# exit

Router(config-pfr-mc-learn)# list seq 20 refname LEARN_FILE_TRANSFER_TC

Router(config-pfr-mc-learn-list)# count 40 max 80

Router(config-pfr-mc-learn-list)# traffic-class application ftp filter INCLUDE_10_NET

Router(config-pfr-mc-learn-list)# aggregation-type prefix-length 24 

Router(config-pfr-mc-learn-list)# throughput

Router(config-pfr-mc-learn-list)# end

Related Commands

debug pfr api

To display Performance Routing (PfR) application interface debugging information, use the debug pfr api command in privileged EXEC mode. To stop the display of PfR application interface debugging information, use the no form of this command.

debug pfr api [detail]

no debug pfr api

Syntax Description

Command Default

Detailed PfR application interface debugging messages are not displayed.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr api command is used to display messages about any configured PfR application interface providers or host devices. The PfR application interface defines the mode of communication and messaging between applications and the network for the purpose of optimizing the traffic associated with the applications. A provider is defined as an entity outside the network in which the router configured as a PfR master controller exists, for example, an ISP, or a branch office of the same company. The provider has one or more host devices running one or more applications that use the PfR application interface to communicate with a PfR master controller. A provider must be registered with a PfR master controller before an application on a host device can interface with PfR. Use the api provider (PfR) command to register the provider, and use the host-address (PfR) command to configure a host device. After registration, a host device in the provider network can initiate a session with a PfR master controller. The application interface provides an automated method for networks to be aware of applications and provides application-aware performance routing.

Caution When the detail keyword is entered, the amount of detailed output to be displayed can utilize a considerable amount of system resources. Use the detail keyword with caution in a production network.

Examples

The following example enables the display of PfR application interface debugging messages, and the output shows that a PfR policy failed due to a prefix that is not found:

Router# debug pfr api

OER api debugging is on

*May 26 01:04:07.278: OER API: Data set id received 5, data set len 9, host ip 10.3.3.3, 
session id 1, requies2

*May 26 01:04:07.278: OER API: Received get current policy, session id 1 request id 22

*May 26 01:04:07.278: OER API: Recvd Appl with Prot 256 DSCP 0 SrcPrefix 0.0.0.0/0  
SrcMask 0.0.0.0 

*May 26 01:04:07.278: OER API:  DstPrefix 10.2.0.0/24 DstMask 255.255.255.0 Sport_min 0 
Sport_max 0 Dport_mi0

*May 26 01:04:07.278: OER API: get prefix policy failed - prefix not found

*May 26 01:04:07.278: OER API: Get curr policy cmd received. rc 0

*May 26 01:04:07.278: OER API: Received send status response, status 0, session id 1, 
request id 22, sequence0

*May 26 01:04:07.278: OER API: rc for data set 0

Table 2 describes the significant fields shown in the display. The content of the debugging messages depends on the commands that are subsequently entered at the router prompt.

Related Commands

debug pfr border

To display general Performance Routing (PfR) border router debugging information, use the debug pfr border command in privileged EXEC mode. To stop the display of PfR debugging information, use the no form of this command.

debug pfr border

no debug pfr border

Syntax Description

This command has no arguments or keywords.

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr border command is entered on a border router. This command is used to display debugging information about the PfR border process, controlled routes, and monitored prefixes.

Examples

The following example enables the display of general PfR debugging information:

Router# debug pfr border 

*May  4 22:32:33.695: OER BR: Process Message, msg 4, ptr 33272128, value  140

*May  4 22:32:34.455: OER BR: Timer event, 0

Table 3 describes the significant fields shown in the display.

Related Commands

debug pfr border active-probe

To display debugging information for active probes configured on the local border router, use the debug pfr border active-probe command in privileged EXEC mode. To stop the display of debug event information, use the no form of this command.

debug pfr border active-probe [detail]

no debug pfr border active-probe [detail]

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr border active-probe command is entered on a border router. This command is used to display the status and results of active probes that are configured on the local border router.

Examples

The following example enables the display of active-probe debug information on a border router:

Router# debug pfr border active-probe 

*May  4 23:47:45.633: OER BR ACTIVE PROBE: Attempting to retrieve Probe 

Statistics.

      probeType = echo, probeTarget = 10.1.5.1, probeTargetPort = 0

      probeSource = Default, probeSourcePort = 0, probeNextHop = Default

      probeIfIndex = 13

*May  4 23:47:45.633: OER BR ACTIVE PROBE: Completed retrieving Probe 

Statistics.

      probeType = echo, probeTarget = 10.1.5.1, probeTargetPort = 0

      probeSource = Default, probeSourcePort = 0, probeNextHop = 10.30.30.2

      probeIfIndex = 13, SAA index = 15

*May  4 23:47:45.633: OER BR ACTIVE PROBE: Completions 11, Sum of rtt 172, 

Max rtt 36, Min rtt 12

*May  4 23:47:45.693: OER BR ACTIVE PROBE: Attempting to retrieve Probe 

Statistics.

      probeType = echo, probeTarget = 10.1.4.1, probeTargetPort = 0

      probeSource = Default, probeSourcePort = 0, probeNextHop = Default

      probeIfIndex = 13

*May  4 23:47:45.693: OER BR ACTIVE PROBE: Completed retrieving Probe 

Statistics.

      probeType = echo, probeTarget = 10.1.4.1, probeTargetPort = 0

      probeSource = Default, probeSourcePort = 0, probeNextHop = 10.30.30.2

      probeIfIndex = 13, SAA index = 14

Table 4 describes the significant fields shown in the display.

Related Commands

debug pfr border learn

To display debugging information about learned prefixes on the local border router, use the debug pfr border learn command in privileged EXEC mode. To stop the display of debug event information, use the no form of this command.

debug pfr border learn [top number]

no debug pfr border learn [top number]

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr border learn command is entered on a border router. This command is used to display debugging information about prefixes learned on the local border router.

Examples

The following example enables the display of active-probe debug information on a border router:

Router# debug pfr border learn 

*May  4 22:51:31.971: OER BR LEARN: Reporting prefix 1: 10.1.5.0, throughput 201

*May  4 22:51:31.971: OER BR LEARN: Reporting 1 throughput learned prefixes

*May  4 22:51:31.971: OER BR LEARN: State change, new STOPPED, old STARTED, reason Stop 
Learn

Table 5 describes the significant fields shown in the display.

Related Commands

debug pfr border routes

To display debugging information for Performance Routing (PfR) controlled or monitored routes on the local border router, use the debug pfr border routes command in privileged EXEC mode. To stop the display of debug event information, use the no form of this command.

debug pfr border routes {bgp | eigrp [detail] | piro [detail] | static}

no debug pfr border routes {bgp | eigrp | piro | static}

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr border routes command is entered on a border router. This command is used to display the debugging information about PfR-controlled or monitored routes on the local border router.

PIRO provides the ability for PfR to search for a parent route—an exact matching route, or a less specific route—in any IP Routing Information Base (RIB). If a parent route for the traffic class exists in the RIB, policy-based routing is used to control the prefix.

EIGRP route control provides the ability for PfR to search for a parent route—an exact matching route, or a less specific route—in the EIGRP routing table. If a parent route for the traffic class exists in the EIGRP routing table, temporary EIGRP routes are injected and identified by adding a configurable extended community tag value.

The following example enables the display of active-probe debug information on a border router:

Router# debug pfr border routes bgp

*May  4 22:35:53.239: OER BGP: Control exact prefix 10.1.5.0/24

*May  4 22:35:53.239: OER BGP: Walking the BGP table for 10.1.5.0/24

*May  4 22:35:53.239: OER BGP: Path for 10.1.5.0/24 is now under OER control

*May  4 22:35:53.239: OER BGP: Setting prefix 10.1.5.0/24 as OER net#

Table 6 describes the significant fields shown in the display.

The following example enables the display of detailed debugging information for PIRO routes and shows that the parent route for the prefix 10.1.1.0 is found in the RIB and a route map is created to control the application. Note that detailed border PBR debugging is also active.

Router# debug pfr border routes piro detail

Feb 21 00:20:44.431: PIRO: Now calling ip_get_route

Feb 21 00:20:44.431: PFR PIRO: Parent lookup found parent 10.1.1.0, mask 255.255.255.0, 
nexthop 10.1.1.0 for network 10.1.1.0/24

...

Feb 21 00:22:46.771: PFR PIRO: Parent lookup found parent 10.1.1.0, mask 255.255.255.0, 
nexthop 10.1.1.0 for network 10.1.1.0/24

Feb 21 00:22:46.771: PFR PIRO: Control Route, 10.1.1.0/24, NH 0.0.0.0, IF Ethernet4/2

Feb 21 00:22:46.771: PIRO: Now calling ip_get_route

Feb 21 00:22:46.771: PIRO: Now calling ip_get_route

Feb 21 00:22:46.771: PFR PIRO: Parent lookup found parent 10.1.1.0, mask 255.255.255.0, 
nexthop 10.1.1.0 for network 10.1.1.0/24

Feb 21 00:22:46.771: OER BR PBR(det): control app: 10.1.1.0/24, nh 0.0.0.0, if 
Ethernet4/2,ip prot 256, dst opr 0, src opr 0, 0 0 0 0, src net 0.0.0.0/0, dscp 0/0

Feb 21 00:22:46.771: OER BR PBR(det): Create rmap 6468E488

Feb 21 00:22:46.775: PfR-RIB RIB_RWATCH: (default:ipv4:base) T 10.1.1.0/24 EVENT Track 
start

Feb 21 00:22:46.775: PfR-RIB RIB_RWATCH: (default:ipv4:base) N 10.1.1.0/24 Adding track

Feb 21 00:22:46.775: PfR-RIB RIB_RWATCH: (default:ipv4:base) N 10.1.1.0/24 QP Schedule 
query

Feb 21 00:22:46.775: PfR-RIB RIB_RWATCH: (default:ipv4:base) T 10.1.1.0/24 EVENT Query 
found route

Feb 21 00:22:46.775: PfR-RIB RIB_RWATCH: (default:ipv4:base) N 10.1.1.0/24 Adding route

Feb 21 00:22:46.775: PfR-RIB RIB_RWATCH: (default:ipv4:base) R 10.1.1.0/24  d=0 p=0 -> 
Updating

Feb 21 00:22:46.775: PfR-RIB RIB_RWATCH: (default:ipv4:base) R 10.1.1.0/24  d=110 p=1 -> 
Et4/2 40.40.40.2 40 Notifying

Feb 21 00:22:46.775: PfR-RIB RIB_RWATCH: Adding to client notification queue

Feb 21 00:22:46.775: PfR-RIB RIB_RWATCH: (default:ipv4:base) W 10.1.1.0/24 c=0x15 Client 
notified reachable

Feb 21 00:22:46.779: PFR PIRO: Route update rwinfo 680C8E14, network 10.1.1.0, mask_len 24 
event Route Up

Feb 21 00:22:46.779: OER BR PBR(det): PIRO Path change notify for prefix:10.1.1.0, 
masklen:24, reason:1

Table 7 describes the significant fields shown in the display.

Related Commands

debug pfr border traceroute reporting

To display debugging information for traceroute probes on the local border router, use the debug pfr border traceroute reporting command in privileged EXEC mode. To stop the display of debug event information, use the no form of this command.

debug pfr border traceroute reporting [detail]

no debug pfr border traceroute reporting [detail]

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr border traceroute reporting command is entered on a border router. This command is used to display the debugging information about traceroute probes sourced on the local border router.

Examples

The following example enables the display of active-probe debug information on a border router:

Router# debug pfr border traceroute reporting 

May 19 03:46:23.807: OER BR TRACE(det): Received start message: msg1 458776, 
msg2 1677787648, if index 19, host addr 100.1.2.1, flags 1, max ttl 30, 
protocol 17, probe delay 0

May 19 03:46:26.811: OER BR TRACE(det): Result msg1 458776, 
msg2 1677787648 num hops 30 sent May 19 03:47:20.919: OER BR TRACE(det):  
Received start message: msg1 524312, msg2 1677787648, if index 2, 
host addr 100.1.2.1, flags 1, max ttl 30, protocol 17, probe delay 0

May 19 03:47:23.923: OER BR TRACE(det): Result msg1 524312, 
msg2 1677787648 num hops 3 sent

Table 8 describes the significant fields shown in the display.

Related Commands

debug pfr cc

To display Performance Routing (PfR) communication control debugging information for master controller and border router communication, use the debug pfr cc command in privileged EXEC mode. To stop the display of PfR debugging information, use the no form of this command.

debug pfr cc [detail]

no debug pfr cc [detail]

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr cc command can be entered on a master controller or on a border router. This command is used to display messages exchanged between the master controller and the border router. These messages include control commands, configuration commands, and monitoring information. Enabling this command will cause very detailed output to be displayed and can utilize a considerable amount of system resources. This command should be enabled with caution in a production network.

Examples

The following example enables the display of PfR communication control debugging messages:

Router# debug pfr cc

*May  4 23:03:22.527: OER CC: ipflow prefix reset received: 10.1.5.0/24

Table 9 describes the significant fields shown in the display.

Related Commands

debug pfr master border

To display debugging information for Performance Routing (PfR) border router events on a PfR master controller, use the debug pfr master border command in privileged EXEC mode. To stop border router event debugging, use the no form of this command.

debug pfr master border [ip-address]

no debug pfr master border

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr master border command is entered on a master controller. The output displays information related to the events or updates from one or more border routers.

Examples

The following example shows the status of two border routers. Both routers are up and operating normally.

Router# debug pfr master border 

OER Master Border Router debugging is on

Router#

1d05h: OER MC BR 10.4.9.7: BR I/F update, status UP, line 1 index 1, tx bw 10000

0, rx bw 100000, time, tx ld 0, rx ld 0, rx rate 0 rx bytes 3496553, tx rate 0,

tx bytes 5016033

1d05h: OER MC BR 10.4.9.7: BR I/F update, status UP, line 1 index 2, tx bw 10000

0, rx bw 100000, time, tx ld 0, rx ld 0, rx rate 0 rx bytes 710149, tx rate 0, t

x bytes 1028907

1d05h: OER MC BR 10.4.9.6: BR I/F update, status UP, line 1 index 2, tx bw 10000

0, rx bw 100000, time, tx ld 0, rx ld 0, rx rate 0 rx bytes 743298, tx rate 0, t

x bytes 1027912

1d05h: OER MC BR 10.4.9.6: BR I/F update, status UP, line 1 index 1, tx bw 10000

0, rx bw 100000, time, tx ld 0, rx ld 0, rx rate 0 rx bytes 3491383, tx rate 0,

tx bytes 5013993

Table 10 describes the significant fields shown in the display.

Related Commands

debug pfr master collector

To display data collection debugging information for PfR monitored prefixes, use the debug pfr master collector command in privileged EXEC mode. To disable the display of this debugging information, use the no form of this command.

debug pfr master collector {active-probes [detail [trace]] | netflow}

no debug pfr master collector {active-probes [detail [trace]] | netflow}

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr master collector command is entered on a master controller. The output displays data collection information for monitored prefixes.

Examples

debug pfr master collector active-probes Example

The following example enables the display of aggregate active probe results for the 10.1.0.0/16 prefix on all border routers that are configured to execute this active probe:

Router# debug pfr master collector active-probes 

*May  4 22:34:58.221: OER MC APC: Probe Statistics Gathered for prefix 10.1.0.0/16 on all 
exits,notifying the PDP

*May  4 22:34:58.221: OER MC APC: Summary Exit Data (pfx 10.1.0.0/16, bdr 10.2.2.2, if 13, 
nxtHop Default):savg delay 13, lavg delay 14, sinits 25, scompletes 25

*May  4 22:34:58.221: OER MC APC: Summary Prefix Data: (pfx 10.1.0.0/16) sloss 0, lloss 0, 
sunreach 25, lunreach 25, savg raw delay 15, lavg raw delay 15, sinits 6561, scompletes 
6536, linits 6561, lcompletes 6536 

*May  4 22:34:58.221: OER MC APC: Active OOP check done

Table 11 describes the significant fields shown in the display.

debug pfr master collector active-probes detail Example

The following example enables the display of aggregate active probe results from each target for the 10.1.0.0/16 prefix on all border routers that are configured to execute this active probe:

Router# debug pfr master collector active-probes detail 

*May  4 22:36:21.945: OER MC APC: Rtrv Probe Stats: BR 10.2.2.2, Type echo, 

Tgt 10.1.1.1,TgtPt 0, Src Default, SrcPt 0, NxtHp Default, Ndx 13 

*May  4 22:36:22.001: OER MC APC: Remote stats received: BR 10.2.2.2, Type 

echo, Tgt 10.15.1, TgtPt 0, Src Default, SrcPt 0, NxtHp Default, Ndx 13 

*May  4 22:36:22.313: OER MC APC: Perf data point (pfx 10.1.0.0/16, bdr 

10.2.2.2, if 13, xtHop Default):  avg delay 20, loss 0, unreach 0, 

initiations 2, completions 2, delay sum40, ldelay max 20, ldelay min 12 

*May  4 22:36:22.313: OER MC APC: Perf data point (pfx 10.1.0.0/16, bdr 

10.2.2.2, if 13, xtHop Default):  avg delay 20, loss 0, unreach 0, 

initiations 2, completions 2, delay sum40, ldelay max 20, ldelay min 12 

*May  4 22:36:22.313: OER MC APC: Probe Statistics Gathered for prefix 

10.1.0.0/16 on al exits, notifying the PDP

*May  4 22:36:22.313: OER MC APC: Active OOP check done

Table 12 describes the significant fields shown in the display.

debug pfr master collector active-probes detail trace Example

The following example enables the display of aggregate active probe results and historical statistics from each target for the 10.1.0.0/16 prefix on all border routers that are configured to execute this active probe:

Router# debug pfr master collector active-probes detail trace 

*May  4 22:40:33.845: OER MC APC: Rtrv Probe Stats: BR 10.2.2.2, Type echo, 

Tgt 10.1.5.1, TgtPt 0, Src Default, SrcPt 0, NxtHp Default, Ndx 13 

*May  4 22:40:33.885: OER MC APC: Remote stats received: BR 10.2.2.2, Type 

echo, Tgt 10.1.5.1, TgtPt 0, Src Default, SrcPt 0, NxtHp Default, Ndx 13 

*May  4 22:40:34.197: OER MC APC: Remote stats received: BR 10.2.2.2, Type 

echo, Tgt 10.1.2.1, TgtPt 0, Src Default, SrcPt 0, NxtHp Default, Ndx 13 

*May  4 22:40:34.197: OER MC APC: Updating Probe (Type echo Tgt 10.1.2.1 

TgtPt 0) Total Completes 1306, Total Attempts 1318

*May  4 22:40:34.197: OER MC APC: All stats gathered for pfx 10.1.0.0/16 

Accumulating Stats

*May  4 22:40:34.197: OER MC APC: Updating Curr Exit Ref (pfx 10.1.0.0/16, 

bdr 10.2.2.2, if 13, nxtHop Default) savg delay 17, lavg delay 14, savg loss 

0, lavg loss 0, savg unreach 0, lavg unreach 0

*May  4 22:40:34.197: OER MC APC: Probe Statistics Gathered for prefix 

10.1.0.0/16 on all exits, notifying the PDP

*May  4 22:40:34.197: OER MC APC: Active OOP check done

Table 13 describes the significant fields shown in the display.

debug pfr master collector netflow Example

The following example enables the display of passive monitoring results for the 10.1.5.0/24 prefix:

Router# debug pfr master collector netflow 

*May  4 22:31:45.739: OER MC NFC: Rcvd  egress update from BR 10.1.1.2       

  prefix 10.1.5.0/24  Interval 75688  delay_sum 0  samples 0  bytes 20362  pkts 505  flows 
359  pktloss 1 unreach 0

*May  4 22:31:45.739: OER MC NFC: Updating exit_ref; BR 10.1.1.2 i/f Et1/0, s_avg_delay 
655, l_avg_delay 655, s_avg_pkt_loss 328, l_avg_pkt_loss 328, s_avg_flow_unreach 513, 
l_avg_flow_unreach 513

*May  4 22:32:07.007: OER MC NFC: Rcvd ingress update from BR 10.1.1.3       

  prefix 10.1.5.0/24  Interval 75172  delay_sum 42328  samples 77  bytes 22040  pkts 551  
flows 310  pktloss 0 unreach 0

Table 14 describes the significant fields shown in the display.

Related Commands

debug pfr master cost-minimization

To display debugging information for cost-based optimization policies, use the debug pfr master cost-minimization command in privileged EXEC mode. To disable the display of this debugging information, use the no form of this command.

debug pfr master cost-minimization [detail]

no debug pfr master cost-minimization [detail]

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr master cost-minimization command is entered on a master controller. The output displays debugging information for cost-minimization policies.

Examples

The following example enables the display of detailed cost-based optimization policy debug information:

Router# debug pfr master cost-minimization detail

OER Master cost-minimization Detail debugging is on

*May 14 00:38:48.839: OER MC COST: Momentary target utilization for exit 10.1.1.2 i/f

Ethernet1/0 nickname ISP1 is 7500 kbps, time_left 52889 secs, cumulative 16 kb, rollup 
period 84000 secs, rollup target 6000 kbps, bw_capacity 10000 kbps

*May 14 00:38:48.839: OER MC COST: Cost OOP check for border 10.1.1.2, current util: 0 
target util: 7500 kbps

*May 14 00:39:00.199: OER MC COST: ISP1 calc separate rollup ended at 55 ingress Kbps

*May 14 00:39:00.199: OER MC COST: ISP1 calc separate rollup ended at 55 egress bytes

*May 14 00:39:00.199: OER MC COST: Target utilization for nickname ISP1 set to 6000, 
rollups elapsed 4, rollups left 24

*May 14 00:39:00.271: OER MC COST: Momentary target utilization for exit 10.1.1.2 i/f 
Ethernet1/0 nickname ISP1 is 7500 kbps, time_left 52878 secs, cumulative 0 kb, rollup 
period 84000 secs, rollup target 6000 kbps, bw_capacity 10000 kbps

*May 14 00:39:00.271: OER MC COST: Cost OOP check for border 10.1.1.2, current util: 0 
target util: 7500 kbps

Table 15 describes the significant fields shown in the display.

Related Commands

debug pfr master exit

To display debug event information for Performance Routing (PfR) managed exits, use the debug pfr master exit command in privileged EXEC mode. To stop the display of debug event information, use the no form of this command.

debug pfr master exit [detail]

no debug pfr master exit [detail]

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr master exit command is entered on a master controller. This command is used to display debugging information for master controller exit selection processes.

Examples

The following example shows output from the debug pfr master exit command, entered with the detail keyword:

Router# debug pfr master exit detail 

*May  4 11:26:51.539: OER MC EXIT: 10.1.1.1, intf Fa4/0 INPOLICY 

*May  4 11:26:52.195: OER MC EXIT: 10.2.2.3, intf Se2/0 INPOLICY 

*May  4 11:26:55.515: OER MC EXIT: 10.1.1.2, intf Se5/0 INPOLICY 

*May  4 11:29:14.987: OER MC EXIT: 7 kbps should be moved from 10.1.1.1, intf Fa4/0 

*May  4 11:29:35.467: OER MC EXIT: 10.1.1.1, intf Fa4/0 in holddown state so skip OOP 
check 

*May  4 11:29:35.831: OER MC EXIT: 10.2.2.3, intf Se2/0 in holddown state so skip OOP 
check 

*May  4 11:29:39.455: OER MC EXIT: 10.1.1.2, intf Se5/0 in holddown state so skip OOP 
check

Table 16 describes the significant fields shown in the display.

Related Commands

debug pfr master learn

To display debug information for PfR master controller learning events, use the debug pfr master learn command in privileged EXEC mode. To stop the display of debug information, use the no form of this command.

debug pfr master learn [detail]

no debug pfr master learn [detail]

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr master learn command is entered on a master controller. This command is used to display debugging information for master controller learning events.

Examples

The following example shows output from the debug pfr master learn command. The output shows PfR Top Talker debug events. The master controller is enabling prefix learning for new border router process:

Router# debug pfr master learn 

06:13:43: OER MC LEARN: Enable type 3, state 0

06:13:43: OER MC LEARN: OER TTC: State change, new RETRY, old DISABLED, reason TT start 

06:13:43: OER MC LEARN: OER TTC: State change, new RETRY, old DISABLED, reason TT start 
request

06:13:43: OER MC LEARN: OER TTC: State change, new RETRY, old DISABLED, reason T

T start request

06:14:13: OER MC LEARN: TTC Retry timer expired

06:14:13: OER MC LEARN: OER TTC: State change, new STARTED, old RETRY, reason At

 least one BR started

06:14:13: %OER_MC-5-NOTICE: Prefix Learning STARTED

06:14:13: OER MC LEARN: MC received BR TT status as enabled

06:14:13: OER MC LEARN: MC received BR TT status as enabled

06:19:14: OER MC LEARN: OER TTC: State change, new WRITING DATA, old STARTED, reason 
Updating DB

06:19:14: OER MC LEARN: OER TTC: State change, new SLEEP, old WRITING DATA, reason 
Sleep state

Table 17 describes the significant fields shown in the display.

Related Commands

debug pfr master prefix

To display debug events related to prefix processing on a Performance Routing (PfR) master controller, use the debug pfr master prefix command in privileged EXEC mode. To disable the display of debug information, use the no form of this command.

debug pfr master prefix [prefix | appl] [detail]

no debug pfr master prefix [prefix | appl] [detail]

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr master prefix command is entered on a master controller. This command displays debugging information related to prefix monitoring and processing.

Examples

The following example shows the master controller searching for the target of an active probe after the target has become unreachable.

Router# debug pfr master prefix 

OER Master Prefix debugging is on

06:01:28: OER MC PFX 10.4.9.0/24: APC last target deleted for prefix, no targets

 left assigned and running

06:01:38: OER MC PFX 10.4.9.0/24: APC Attempting to probe all exits

06:02:59: OER MC PFX 10.4.9.0/24: APC last target deleted for prefix, no targets

 left assigned and running

06:03:08: OER MC PFX 10.4.9.0/24: APC Attempting to probe all exits

06:04:29: OER MC PFX 10.4.9.0/24: APC last target deleted for prefix, no targets

 left assigned and running

06:04:39: OER MC PFX 10.4.9.0/24: APC Attempting to probe all exits

06:05:59: OER MC PFX 10.4.9.0/24: APC last target deleted for prefix, no targets

 left assigned and running

06:06:09: OER MC PFX 10.4.9.0/24: APC Attempting to probe all exits

Table 18 describes the significant fields shown in the display.

Related Commands

debug pfr master prefix-list

To display debug events related to prefix-list processing on a Performance Routing (PfR) master controller, use the debug pfr master prefix-list command in privileged EXEC mode. To disable the display of debug information, use the no form of this command.

debug pfr master prefix-list list-name [detail]

no debug pfr master prefix-list list-name

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr master prefix-list command is entered on a master controller. This command displays debugging information related to prefix-list processing.

Examples

The following example shows output from the debug pfr master prefix-list command.

Router# debug pfr master prefix-list 

23:02:16.283: OER MC PFX 10.1.5.0/24: Check PASS REL loss: loss 0, policy 10%, notify TRUE

23:02:16.283: OER MC PFX 10.1.5.0/24: Passive REL loss in-policy

23:02:16.283: OER MC PFX 10.1.5.0/24: Check PASS REL delay: delay 124, policy 50%, notify 
TRUE

23:02:16.283: OER MC PFX 10.1.5.0/24: Passive REL delay in policy

23:02:16.283: OER MC PFX 10.1.5.0/24: Prefix not OOP

23:02:16.283: OER MC PFX 10.1.5.0/24: Check PASS REL unreachable: unreachable 0, policy 
50%, notify TRUE

23:02:16.283: OER MC PFX 10.1.5.0/24: Passive REL unreachable in-policy

23:02:16.283: OER MC PFX 10.1.5.0/24: Check PASS REL loss: loss 0, policy 10%, notify TRUE

23:02:16.283: OER MC PFX 10.1.5.0/24: Passive REL loss in policy

Table 19 describes the significant fields shown in the display.

Related Commands

debug pfr master process

To display debug information about the PfR master controller process, use the debug pfr master process command in privileged EXEC mode. To stop displaying debug information, use the no form of this command.

debug pfr master process [detail]

no debug pfr master process [detail]

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr master process command is entered on a master controller.

Examples

The following is sample debug output for a master controller process:

Router# debug pfr master process

01:12:00: OER MC PROCESS: Main msg type 15, ptr 0, value 0

Table 20 describes the significant fields shown in the display.

Related Commands

debug pfr master traceroute reporting

To display debug information about traceroute probes, use the debug pfr master traceroute reporting command in privileged EXEC mode. To stop displaying debug information, use the no form of this command.

debug pfr master traceroute reporting [detail]

no debug pfr master traceroute reporting [detail]

Syntax Description

Command Default

No debugging messages are enabled.

Command Modes

Privileged EXEC (#)

Command History

Usage Guidelines

The debug pfr master traceroute reporting command is entered on a master controller. This command is used to display traceroute events on a master controller.

Examples

The following is sample debug output for a master controller process:

Router# debug pfr master traceroute reporting detail 

*May 12 18:55:14.239: OER MC TRACE: sent start message msg1 327704, msg2 167838976, if 
index 2, host add 10.1.5.2, flags 1, max ttl 30, protocol 17

*May 12 18:55:16.003: OER MC TRACE: sent start message msg1 393240, msg2 167838976, if 
index 2, host add 10.1.5.2, flags 1, max ttl 30, protocol 17

master#

*May 12 18:55:17.303: OER MC TRACE: Received result: msg_id1 327704, prefix 10.1.5.0/24, 
hops 4, flags 1

*May 12 18:55:19.059: OER MC TRACE: Received result: msg_id1 393240, prefix 10.1.5.0/24, 
hops 4, flags 1

Table 21 describes the significant fields shown in the display.

Related Commands

delay (PfR)

To configure PfR traffic class learning based on highest delay times or to set a delay threshold for a Performance Routing (PfR) policy, use the delay command in master controller, Top Talker and Top Delay learning, or learn list configuration mode. To reset the delay values to their default, use the no form of this command.

Master Controller Configuration Mode

delay {relative percentage | threshold maximum}

no delay

Top Talker and Top Delay Learning and Learn List Configuration Modes

delay

no delay

Syntax Description

Command Default

Master Controller Configuration Mode

PfR uses the default values if this command is not configured or if the no form of this command is entered. Default values:

percentage: 500 (50 percent)
maximum: 5000

Top Talker and Top Delay Learning and Learn List Configuration Modes

None

Command Modes

Master controller configuration (config-pfr-mc)
Top Talker and Top Delay learning configuration (config-pfr-mc-learn)
Learn list configuration (config-pfr-mc-learn-list)

Command History

Usage Guidelines

Configuring in Master Controller Configuration Mode

Use the delay command entered in PfR master controller configuration mode to set the delay threshold for a traffic class within a PfR policy as a relative percentage or as an absolute value. If the configured delay threshold is exceeded, the traffic class is out-of-policy.

The relative keyword is used to configure a relative delay percentage. The relative delay percentage is based on a comparison of short-term and long-term measurements. The short-term measurement reflects the delay percentage within a 5-minute period. The long-term measurement reflects the delay percentage within a 60-minute period. The following formula is used to calculate this value:

Relative delay measurement = ((short-term measurement - long-term measurement) / long-term measurement) * 100

The master controller measures the difference between these two values as a percentage. If the percentage exceeds the user-defined or default value, the delay percentage is determined to be out-of-policy. For example, if the long-term delay measurement is 100 milliseconds and the short-term delay measurement is 120 milliseconds, the relative delay percentage is 20 percent.

The threshold keyword is used to configure the absolute maximum delay period in milliseconds.

Configuring in Top Talker and Top Delay Learning and Learn List Configuration Modes

Use the delay command under the Top Talker and Top Delay learning or learn list configuration mode to enable traffic class learning based on the highest delay time. PfR measures the delay for optimized prefixes when this command is enabled, and the master controller creates a list of traffic classes based on the highest delay time.

Examples

Master Controller Configuration Mode

The following example shows how to set a 20 percent relative delay threshold:

Router(config)# pfr master

Router(config-pfr-mc)# delay relative 200 

Top Talker and Top Delay Learning Configuration Mode

The following example shows how to configure a master controller to learn traffic classes based on the highest delay times:

Router(config)# pfr master

Router(config-pfr-mc)# learn 

Router(config-pfr-mc-learn)# delay

Learn List Configuration Mode

The following example shows how to configure a master controller to learn traffic classes based on the highest delay times for a learn list named LEARN_REMOTE_LOGIN_TC for Telnet and Secure Shell (ssh) application traffic classes:

Router(config)# pfr master 

Router(config-pfr-mc)# learn 

Router(config-pfr-mc-learn)# list seq 10 refname LEARN_REMOTE_LOGIN_TC

Router(config-pfr-mc-learn-list)# traffic-class application telnet ssh

Router(config-pfr-mc-learn-list)# aggregation-type prefix-length 24 

Router(config-pfr-mc-learn-list)# delay

Related Commands

downgrade bgp (PfR)

To specify route downgrade options for a Performance Routing (PfR) managed interface using Border Gateway Protocol (BGP) advertisements, use the downgrade bgp command in PfR border exit interface configuration mode. To remove the route downgrade options, use the no form of this command.

downgrade bgp community community-number

no downgrade bgp community

Syntax Description

Command Default

No route downgrade options are specified.

Command Modes

PfR border exit interface configuration (config-pfr-mc-br-if)

Command History

Usage Guidelines

Use the downgrade bgp command to attach a BGP prepend community number to an inside prefix BGP advertisement from the network to another autonomous system such as an Internet service provider (ISP). The BGP prepend community will increase the number of autonomous system hops in the advertisement of the inside prefix from the ISP to its peers. Autonomous system prepend BGP community is the preferred method to be used for PfR BGP inbound optimization because there is no risk of the local ISP filtering the extra autonomous system hops.

Examples

The following example shows how to enforce an entrance link selection for learned inside prefixes using the BGP autonomous system number community prepend technique. The downgrade bgp command is configured under PfR border exit interface configuration mode to add the BGP community number 3:1 to BGP advertisements to packets that travel through this entrance link on the border router.

Router> enable

Router# configure terminal

Router(config)# pfr master

Router(config-pfr-mc)# max range receive percent 35

Router(config-pfr-mc)# border 10.1.1.2 key-chain PFR_KEY

Router(config-pfr-mc-br)# interface ethernet1/0 external

Router(config-pfr-mc-br-if)# maximum utilization receive absolute 2500

Router(config-pfr-mc-br-if)# downgrade bgp community 3:1

Router(config-pfr-mc-br-if)# exit

Router(config-pfr-mc-br)# exit

Router(config-pfr-mc)# exit

Router(config)# pfr-map INSIDE_LEARN 10

Router(config-pfr-map)# match pfr learn inside

Router(config-pfr-map)# set delay threshold 400

Router(config-pfr-map)# set resolve delay priority 1

Router(config-pfr-map)# set mode route control

Router(config-pfr-map)# end

Related Commands

expire after (PfR)

To set the length of time for which Performance Routing (PfR) learned prefixes are kept in the central policy database, use the expire after command in PfR Top Talker and Top Delay learning configuration mode. To disable the expiration timer and restore default behavior, use the no form of this command.

expire after {session number | time minutes}

no expire after

Syntax Description

Command Default

New prefixes are not learned if router memory utilization is greater than 90 percent. Inactive prefixes are removed (oldest first) from the central policy database as memory is needed.

Command Modes

PfR Top Talker and Top Delay learning configuration (config-pfr-mc-learn)

Command History

Usage Guidelines

The expire after command is entered on a PfR master controller in PfR Top Talker and Top Delay learning configuration mode. This command is used to configure a session- or time-based expiration period for learned prefixes. Each session is equal to one monitoring period plus a periodic interval time that separates monitoring periods. The time-based expiration timer is configured in minutes.

Examples

The following example configures learned prefixes to be removed from the central policy database after 100 monitoring periods:

Router(config)# pfr master

Router(config-pfr-mc)# learn

Router(config-pfr-mc-learn)# expire after session 100 

Related Commands