System Management Command Reference for Cisco 8000 Series Routers

action

To configure a track to implement actions based on changes in the state of the track, use the action command in the track configuration mode. To delete the configuration of action tracking, use the no form of this command.

action {track-up | | track-down} error-disable interface interface-name [ auto-recover]

no action {track-up | | track-down} error-disable interface interface-name [ auto-recover]

Syntax Description


track-up	Configures action on the track when the track goes up.
track-down	Configures action on the track when the track goes down.
error-disable	Disables the specified interface when the track state changes.
interface `interface name`	Name of the interface to be disabled.
auto-recover	(Optional) Allows the interface that is error-disabled by object tracking to auto-recover. Autorecovery of the interface occurs when the track state changes to the pre-error-disabled state.

Command Default

No default behavior or values

Command Modes

Track configuration (config track)

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

To use the action command, you must be in a user group that is associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.

Task ID


Task ID	Operation
sysmgr	read, write

Examples

This example shows how to configure the action command:

Router# configure
Router(config)# track t1
Router(config-track)# type route reachability route ipv4 192.2.0.1/24
Router(config)# action track-down error-disable interface GigabitEthernet 0/0/0/1 auto-recover

delay

To configure the delay, in seconds, before the track or interface state should be polled for a change in status, use the delay command in track configuration mode. To delete the configuration of delay tracking, use the no form of this command.

delay {up | down} seconds

no delay {up | down} [seconds]

Syntax Description


delay up `seconds`	Sets delay of from 1 to 180 seconds before communication of up status of the tracked object or list of objects.
delay down `seconds`	Sets delay of from 1 to 180 seconds before communication of down status of the tracked object or list of objects.

Command Default

No default behavior or values

Command Modes

Track configuration

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

The delay command can be used in conjunction with all track types:

When using the no form of the command, the use of the seconds argument is optional.

Task ID


Task ID	Operations
sysmgr	read, write

Examples

The following example shows that the tracking process is configured to notify the network administrator that the interface should be polled for its up state in five-second intervals:


Router# configuration
Router(config)# track name1         
Router(config-track)# delay up 5

interface (track)

To select an interface object type for tracking purposes, use the interface command in interface configuration mode. To delete the configuration of a track based on a particular interface object type, use the no form of this command.

interface type interface-path-id

no interface type interface-path-id

Syntax Description

type

(Optional) Interface type. For more information, use the question mark (?) online help function.

interface-path-id

(Optional) Physical interface or virtual interface.

Note

Use the show interfaces command to see a list of all interfaces currently configured on the router.

For more information about the syntax for the router, use the question mark (? ) online help function.

Command Default

No default behavior or values

Command Modes

Interface configuration

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

To access the interface command, you must be in line protocol tracking configuration submode.

For information about interface keywords, see Interface and Hardware Component Command Reference for Cisco 8000 Series Routers.

Task ID


Task ID	Operations
sysmgr	read, write

Examples

The following example shows the interface command in the context of object tracking:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# track track12
RP/0/RP0/CPU0:router(config-track)# type line-protocol state
RP/0/RP0/CPU0:router(config-track-line-prot)# interface atm 0/2/0/0.1

line-protocol track

To associate a specific track with an IPsec or GRE interface object, use the line-protocol track command in interface configuration mode. To delete the association between the track and the IPsec or GRE interface object, use the no form of this command.

line-protocol track object-name

no line-protocol track object-name

Syntax Description


`object-name`	Name of object being tracked.

Command Default

No default behavior or values

Command Modes

Interface configuration

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
sysmgr	read, write

Examples

The following example shows how the line-protocol track command is used:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# track PREFIX1
RP/0/RP0/CPU0:router(config-track)# type route reachability
RP/0/RP0/CPU0:router(config-track-route)# route ipv4 7.0.0.0/24
RP/0/RP0/CPU0:router(config-track-route)# interface service-ipsec 1
RP/0/RP0/CPU0:router(config-if)# vrf 1
RP/0/RP0/CPU0:router(config-if)# ipv4 address 70.0.0.2 255.25.255.0
RP/0/RP0/CPU0:router(config-if)# line-protocol track PREFIX1

object

To configure an object for tracking, use the object command in list tracking configuration mode. To delete a previously configured track based on an object, use the no form of this command.

object object-name [not]

no object object-name

Syntax Description


`object-name`	Name of the object to be tracked.
not	(Optional) Deletes a preivously configured track based on whether an interface object is not up or down.

Command Default

No default behavior or values

Command Modes

List tracking configuration

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

To delete a previously configured track based on whether an interface object is not up or down, use the not keyword together with the object command in a list of tracked objects based on a Boolean expression.

The object command can be used only for a track based on a Boolean expression.

Task ID


Task ID	Operations
sysmgr	read, write

Examples

The following example shows how to configure an object, using the optional not keyword, in a tracked list of objects based on a Boolean calculation:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# track connection100 
RP/0/RP0/CPU0:router(config-track-list)# type list boolean and
RP/0/RP0/CPU0:router(config-track-list)# object obj3 no

route ipv4

To configure that an IP prefix and subnet mask should be used as the basis to track route reachability, use the route ipv4 command in route tracking configuration mode. To remove this configuration, use the no form of the command.

route ipv4 IP prefix and subnet mask

no route ipv4

Syntax Description


`IP prefix and subnet mask`	Network and subnet mask; for example, 10.56.8.10/16.

Command Default

No default behavior or values

Command Modes

Route tracking configuration

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

The IP prefix and subnet mask arguments are optional for the no form of this command.

Task ID


Task ID	Operations
sysmgr	read, write

Examples

The following example displays use of the route ipv4 command:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# track track22
RP/0/RP0/CPU0:router(config-track)# type route reachability
RP/0/RP0/CPU0:router(config-track-route)# route ipv4 10.56.8.10/16

show track

To display information about objects that were tracked and to specify the format of the report, use the show track command in EXEC mode.

show track [track-name | interface | ipv4 route] [brief]

Syntax Description


`track-name`	(Optional) Name of track used for tracking objects; for example, track1.
brief	(Optional) Displays a single line of information related to the preceding argument or keyword.
interface	(Optional) Displays tracked interface objects.
ipv4 route	(Optional) Displays the tracked IPv4 route objects.

Command Default

No default behavior or values

Command Modes

EXEC

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

Use the show track command to display information about objects that are tracked by the tracking process. When no arguments or keywords are specified, information for all objects is displayed.

Task ID


Task ID	Operations
sysmgr	read

Examples

The following sample output illustrates use of the show track command:


RP/0/RP0/CPU0:router# show track Track_name3

  Track_name3 
          List boolean and is DOWN
          1 change, last change 10:26:20 SJC Sun Aug 05 2007
                  object name2 not UP
                  object name1 UP

track

To initiate or identify a tracking process used to track the status of an object or list of objects, use the track command in global configuration mode. To remove the tracking process, use the no form of this command.

track track-name

no track track-name

Syntax Description

track track-name

Name of track used for tracking objects; for example, track1.

Note

Special characters are not allowed in a track-name.

Command Default

No default behavior or values

Command Modes

Global configuration

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

When you use the track command, you enter track configuration mode.

Task ID


Task ID	Operations
sysmgr	read, write

Examples

This example shows that the tracking process is configured to notify the network administrator about the up state of the tracked object list every five seconds:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# track LIST2
RP/0/RP0/CPU0:router# track LIST2 delay up 5

type line-protocol state

To configure tracking of the line protocol state of an interface object, use the type line-protocol command in track configuration mode. To delete the configuration of line-protocol tracking, use the no form of this command.

type line-protocol state

no type line-protocol state

Command Default

No default behavior or values

Command Modes

Track configuration

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

The type line-protocol state command can be used in conjunction with the delay command to configure the delay, in seconds, before the track or interface state should be polled for a change in its status.

The type line-protocol state command enters line-protocol tracking configuration mode.

Task ID


Task ID	Operations
sysmgr	read, write

Examples

This example shows how to use the type line-protocol state command:


Router# configure
Router(config)# track track12
Router(config-track)# type line-protocol state

type list boolean

To configure a tracked list of objects based on a Boolean calculation, use the type list boolean command in track configuration mode. To remove an object tracking list based on a Boolean calculation, use the no form of the command.

type list boolean {and | or}

no type list boolean {and | or}

Syntax Description


and	Specifies that the list is up if all objects are up, or down if one or more objects are down. For example, when tracking two interfaces, up means that both interfaces are up, and down means that either interface is down.
or	Specifies that the list is up if at least one object is up. For example, when tracking two interfaces, up means that either interface is up, and down means that both interfaces are down.

Command Default

No default behavior or values

Command Modes

Track configuration

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

The type list boolean command enters the list tracking configuration mode, and can be used in conjunction with the delay command to configure the delay, in seconds, before the track or interface state should be polled for a change in its status.

To remove a track based on whether an interface object is not up or down, use the not keyword together with the object command as shown in the example that follows.

Task ID


Task ID	Operations
sysmgr	read, write

Examples

This example shows how to use the type list boolean command in creating a list of objects to be tracked:


Router# configure
Router(config)# track LIST2
Router(config-track)# type list boolean and
Router(config-track-list)# object IPSec1 not
Router(config-track-list)# object IPSec2
Router(config-track-list)# object PREFIX1
Router(config-track-list)# exit
Router(config)# track IPSec1
Router(config-track)# type line-protocol state
Router(config-track-line-prot)# interface tengige 0/0/0/3
Router(config-track-line-prot)# exit
Router(config-track)# track IPSec2
Router(config-track)# type line-protocol state
Router(config-track-line-prot)# interface ATM0/2/0.1
Router(config-track-line-prot)# exit
Router(config)# track PREFIX1
Router(config-track)# type route reachability
Router(config-track-route)# route ipv4 7.0.0.0/24
Router(config-track-route)# exit
Router(config-track)# interface service-ipsec 1
Router(config-if)# vrf 1
Router(config-if)# ipv4 address 70.0.0.2 255.255.255.0
Router(config-if)# profile vrf_1_ipsec
Router(config-if)# line-protocol track LIST2
Router(config-if)# tunnel source 80.0.0.2
Router(config-if)# tunnel destination 80.0.0.1
Router(config-if)# service-location preferred-active 0/2/0
Router(config-if)# commit

type route reachability

To configure the routing process to notify the tracking process when the route state changes due to a routing update, use the type route reachability command in track configuration mode. To remove a track based on route reachability, use the no form of this command.

type route reachability

no type route reachability

Syntax Description

This command has no keywords or arguments.

Command Default

No default behavior or values

Command Modes

Track configuration

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

A tracked IP-route object is considered up and reachable when a routing-table entry exists for the route and the route is not inaccessible.

The type route reachability command can be used in conjunction with the delay command to configure the delay, in seconds, before the track or interface state should be polled for a change in its status.

The route reachability tracking process is based on either of the following, depending on your router type:

vrf—A VRF table name.
route—An IPv4 prefix consisting of the network and subnet mask (for example, 10.56.8.10/16).

Task ID


Task ID	Operations
sysmgr	read, write

Examples

This example shows how to track for route reachability:


Router# configure
Router(config)# track track22
Router(config-track)# type route reachability

type rtr

To configure the router to track the return code of IP service level agreement (SLA) operations, use the type rtr command in track configuration mode. To remove a track based on IP SLA return code, use the no form of this command.

type rtr ipsla-no reachability

no type rtr

Syntax Description


`ipsla-no`	IP SLA operation number. Values can range from 1 to 2048.
reachability	Tracks whether the route is reachable or not.

Command Default

None

Command Modes

Track configuration

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

Use the type rtr command in conjunction with a configuration that uses:

The

track keyword in the permit command within an ACL definition. For example:


ipv4 access-list abf-track
  10 permit any any nexthop track track1 1.2.3.4

An IP service level agreement configuration.

Task ID


Task ID	Operation
sysmgr	read, write

Examples

This example shows how to configure IPSLA object tracking:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# track track22
RP/0/RP0/CPU0:router(config-track)# type rtr 1 reachability

vrf (track)

To configure a VRF table to be used as the basis to track route reachability, use the vrf command in route tracking configuration mode. To delete the configuration of a VRF table for the purpose of IP route tracking purposes, use the no form of the command.

vrf vrf-table-name

no vrf [vrf-table-name]

Syntax Description


`vrf-table-name`	Network and subnet; for example, 10.56.8.10/16.

Command Default

No default behavior or values

Command Modes

Route tracking configuration

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
sysmgr	read, write

Examples

The following example displays the use of the vrf command:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# track track22
RP/0/RP0/CPU0:router(config-track)# type route reachability
RP/0/RP0/CPU0:router(config-track-route)# vrf vrf1

Bias-Free Language

Results

Chapter: Object Tracking Commands

Object Tracking Commands

action

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

delay

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

interface (track)

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

line-protocol track

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

object

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

route ipv4

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

show track

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

track

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

type line-protocol state

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

type list boolean

Syntax Description

Command Default

Command Modes