Table Of Contents

Boot Commands on Cisco IOS XR Software

config-register

reload

reload location

show system backup

show variables boot

show variables system

system backup

system boot-sequence

Boot Commands on Cisco IOS XR Software

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This chapter describes the commands used to boot or reset the Cisco IOS XR software.

For more information about ROM Monitor (ROMMON) and boot tasks, see Cisco IOS XR Getting Started Guide.

config-register

To define the configuration register boot value, use the config-register command in administration EXEC mode.

config-register value [location all]

Syntax Description

value	Hexadecimal or decimal value that represents the 16-bit configuration register value to be used the next time the router is reloaded. Range is from 0x0 to 0xFFFF (0 to 65535 in decimal). For information about common configuration register settings, see Table 1.
location all	Specifies all RP nodes in a multishelf system.

Defaults

Enter the command config-register value to set the configuration register setting for the DSC (DSDRSC of the owner SDR).

By default, the configuration register value is 0x102 after a TURBOBOOT.

Command Modes

Administration EXEC

Command History

Release	Modification
Release 2.0	This command was introduced on the Cisco CRS-1.
Release 3.0	No modification.
Release 3.2	This command was first supported on the Cisco XR 12000 Series Router. This command was moved from global configuration mode to Administration configuration mode.
Release 3.3.0	Support was added for the location all keywords.
Release 3.4.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

The configuration register setting is a 16-bit, user-configurable value that determines how the primary route processor (RP) functions during initialization. The configuration register can cause the RP to boot normally from the default configuration, or to enter ROMMON mode during a reload. Configuration register settings can also be used to perform tasks such as password recovery.

The config-register command is entered in administration EXEC mode, on the designated system controller (DSC) of the system. The DSC is the primary RP of the owner secure domain router (owner SDR). When setting the configuration register value for the config-register command, note the following conditions:

•If both the primary and standby DSC are up and running when the configuration register value is set, the configuration register value applies to both the primary and standby DSC.

•By contrast, if only the primary DSC is up and running when the configuration register value is set and the standby DSC is introduced into the router at a later time, the router does not attempt to synchronize the configuration register value for the standby RP to that of the active RP; in this situation, the configuration register setting applied to the standby DSC is determined by the configuration register value set in ROMMON mode.

•To set the configuration register value for all RPs in a multishelf system, enter the command config-register value location all.

---

Note To display the current configuration settings, use the command show variables boot.

---

The most commonly used configuration register settings are described in Table 1.

Table 1 Common Configuration Register Settings 

Value	Description
0x0	RP enters ROMMON mode (rommon B1>) on the next system boot.
0x2	RP loads the Cisco IOS XR software software and default configuration on the next system boot. After logging in, the user can access EXEC mode.
0x102	Router disables the break key.
0x40	Router enters the password recovery mode on the next system boot.

Task ID

Task ID	Operations
root-lr	read, write

Examples

The following example shows how to set the configuration register on the DSC to 0x2. Setting the configuration registration to 0x2 causes the router to boot the Cisco IOS XR software and enter EXEC mode during a router reload.

RP/0/RP0/CPU0:router(admin)# config-register 0x2 

Successfully set config-register to 0x2 on node 0/RP0/CPU0 

Successfully set config-register to 0x2 on node 0/RP1/CPU0 

Related Commands

Command	Description
reload	Defines how the node functions during a reset operation in ROMMON mode.
show variables boot	Displays the RP configuration register setting.
show version	Displays information on the Cisco IOS XR software.

reload

To reload the designated secure domain router system controller (DSDRSC), use the reload command in EXEC mode.

reload [force]

Syntax Description

force

(Optional) Forces the reload without performing any cleanup.

Defaults

The reload process performs cleanup.

Command Modes

EXEC

Command History

Releases	Modifications
Release 2.0	This command was introduced on the Cisco CRS-1.
Release 3.0	No modification.
Release 3.2	This command was first supported on the Cisco XR 12000 Series Router.
Release 3.3.0	No modification.
Release 3.4.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

Use the reload command to cause the DSDRSC to reload the Cisco IOS XR software according to the configuration register setting (for example, 0x0 to enter ROMMON mode and 0x2 to reload the RP to EXEC mode). If a standby DSDRSC is in the ready redundancy state, the reload command also causes the router to failover to the standby DSDRSC. Use the show redundancy command in EXEC mode to display the status of the standby RP.

When the reload command is used and a failover occurs, the running (active) software configuration is automatically maintained during failover.

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Caution If a standby RP is not installed or is not in the ready state, then the router experiences a loss of service while the active RP is reloading the Cisco IOS XR software. To view the status of the standby RP, issue the show redundancy command in EXEC mode.

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Task ID

Task ID	Operations
root-lr	execute

Examples

The following example shows how to reload the active RP. If a standby RP is in Ready state, then the router fails over to the standby RP. If the standby RP is not installed or not in Ready state, then the router enters ROMMON mode and routing operations stop.

RP/0/RP0/CPU0:router# reload

Updating Commit Database.  Please wait...[OK]

Proceed with reload? [confirm] y

PCI0 device[7]: Vendor ID 0x10ee

PCI0 device[7]: Device ID 0x300e

PCI1 device[7]: Device ID 0x1100

PCI1 device[7]: Vendor ID 0x1013

PCI1 device[8]: Device ID 0x649

PCI1 device[8]: Vendor ID 0x1095

PCI1 device[9]: Device ID 0x5618

PCI1 device[9]: Vendor ID 0x14e4

PCI1 device[10]: Device ID 0x5618

PCI1 device[10]: Vendor ID 0x14e4

System Bootstrap, Version 1.15(20040120:002852) ,

Copyright (c) 1994-2004 by cisco Systems, Inc.

Board type is 0x100000 (1048576)

Enabling watchdog

Broadcom 5618 #0 Found on PCI

Broadcom 5618 #1 Found on PCI

No. of BCM 56xx switches found 2 .

BCM Switch #0 initialisation complete.

BCM Switch #1 initialisation complete

G4(7450-SMP-GT64260_A) platform with 2048 Mb of main memory

rommon B1 >

Related Commands

Command	Description
config-register	Defines the configuration register setting in administration EXEC mode.
reload	Defines how the node functions during a reset operation in ROMMON mode.
reload location	Performs a reload of a single node or all nodes in the system.
show redundancy	Displays the redundancy status of the RPs.

reload location

To reload a node or all nodes on a single chassis or multishelf system, use the reload location command in the administration EXEC mode.

reload location [node-id | all] [rack rack-number] [force]

Syntax Description

node-id	The node-id argument is expressed in rack/slot/module notation.
all	Reloads all the nodes in the system.
force	Forces a node reload without cleaning up the data.
rack	Reloads all the nodes on a specified chassis.
rack-number	The rack number of the line card chassis or fabric chassis.

Defaults

The default behavior for reload is the force option.

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.3.0	This command was introduced on the Cisco CRS-1 and Cisco XR 12000 Series Router.
Release 3.4.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

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Note Before reloading nodes on a Cisco CRS-1, we recommend using the cfs check command to check the sanity of the configuration file system and attempt to recover from internal inconsistencies.
Enter the cfs check command on each SDR that has nodes impacted by the reload. If you enter the reload location all command, run the cfs check command on every SDR in the system before reloading the router.

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•To reload all the nodes in all chassis in a multishelf system, use the reload location all command.

•To reload all the nodes in a specific chassis, use the reload location rack rack-number command. This command cannot be used to reload the DSC line card chassis in Release 3.3.0 (rack 0). DSC failover between racks is not supported in this release.

•To reload a specific node on the router specify the reload location node-id command. The node-id is expressed rack/slot/module.

•To ensure a graceful reload and ensure the sanity of the configuration file system, enter the cfs check command on each SDR that has nodes impacted by the reload.

Task ID

Task ID	Operations
root-system	execute

Examples

The following example shows how to reload all the nodes on the router:

RP/0/RP0/CPU0:router(admin)# reload location all 

Graceful reload of all nodes not supported

Assuming 'force'

Operation may result in file corruptions or loss of config. Proceed [Y/N]? Y

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Note To ensure the sanity of the configuration file system, enter the cfs check command on each SDR impacted by the reload operation. If you enter the reload location all command, run the cfs check command on every SDR in the system before reloading the router.

---

The following example shows how to reload all the nodes in a single chassis:

RP/0/RP0/CPU0:router(admin)# reload rack 1

Graceful reload of a rack in admin mode is not supported

Assuming 'force' mode

Operation may result in file corruption or loss of config. Proceed? [confirm]

In Release 3.3.0, you cannot reload the chassis containing the DSC. The following example shows the message displayed if an attempt is made to reload rack 0 (line card chassis 0) in a multishelf system:

RP/0/RP0/CPU0:router(admin)# reload rack 0

Reload of rack 0 is not supported in 3.3 release.

Related Commands

Command	Description
cfs check	Verifies the Configuration File System (CFS).
config-register	Defines the configuration register setting in administration EXEC mode.
reload	Defines how the node functions during a reset operation in ROMMON mode.
reload	Performs a reload of the route processor.
show redundancy	Displays the redundancy status of the RPs.

show system backup

To display the system backup details and history, use the show system backup command in EXEC and administration EXEC mode.

show system backup [target-dev] [details | diff] [verify] [location {all | node-id}]

Syntax Description

target-dev	(Optional) Displays the backup details and history for the specified device.
details	(Optional) Lists the software packages and configurations stored on the specified backup device.
diff	(Optional) Displays the differences between the software packages and configuration files on the backup device, with the packages and configuration files on the current boot device.
verify	(Optional) Verifies the software packages and configuration files stored on the specified backup device.
location node-id	(Optional) Displays information for a designated RP node.
location all	(Optional) Displays information for all RP nodes.

Defaults

Enter the show system backup command without keywords or arguments to display the date, time and status of the last backup for the current DSDRSC. This command also displays the configured primary and secondary boot devices.

Command Modes

EXEC

Administration EXEC

Command History

Release	Modification
Release 3.4.0	This command was introduced on the Cisco CRS-1 and Cisco XR 12000 Series Router.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

Use the show system backup command to display details of the current system backup on a local storage device.

•Enter the show system backup command to display information on the backup performed for the active RP where you are logged in, including the date, time and status of the last backup.

•Enter the show system backup target-dev command to display backup information for a specified device on a RP node.

•Enter the show system backup details command to list information about the software packages and configuration files stored on the backup device.

•Enter the show system backup diff command to display the differences between the software and configurations on the backup device and the software and configurations on the currently active boot disk.

•Enter the show system backup location command with the location node-id keyword and argument to display information for a backup on a specific node. Use the location all keywords to display information for backups on all nodes in the system.

Command Modes

•To display information for the current SDR, enter the show system backup command in the EXEC mode of that SDR.

•When the command is entered in administration EXEC mode, the backup information for the owner SDR is displayed.

Task ID

Task ID	Operations
root-lr	execute

Examples

In the following example, the show system backup command displays the status of the last system backup:

RP/0/0/CPU0:router# admin 

RP/0/0/CPU0:router(admin)# show system backup 

System Backup information for node0_0_CPU0 on disk1:

=======================================================

Last Backup Successful

Backup started at Sat Jun 24 12:22:10 2006

 ended at Sat Jun 24 12:42:11 2006

Verify started at Sat Jun 24 12:42:12 2006

 ended at Sat Jun 24 12:48:47 2006

BOOT_DEV_SEQ_CONF=disk0:;disk1:

BOOT_DEV_SEQ_OPER=disk0:;disk1:

In the following example, the show system backup command is entered with the details keyword to display additional information on the configuration and software package files stored on the backup device. Because this command is entered in administration EXEC mode, the backup information for both the administration and SDR configurations is displayed.

RP/0/0/CPU0:router(admin)# show system backup details 

System Backup information for node0_0_CPU0 on disk1:

=======================================================

Last Backup Successful

Backup started at Sat Jun 24 12:22:10 2006

 ended at Sat Jun 24 12:42:11 2006

Verify started at Sat Jun 24 12:42:12 2006

 ended at Sat Jun 24 12:48:47 2006

BOOT_DEV_SEQ_CONF=disk0:;disk1:

BOOT_DEV_SEQ_OPER=disk0:;disk1:

Admin configuration last commit record on disk1:

  Device          Commitid    Time Stamp

  disk1:          2000000010  23:07:59 UTC Fri Jun 09 2006

SDR configuration last commit record on disk1:

  Device          Commitid    Time Stamp

  disk1:          1000000030  11:56:43 UTC Thu Jun 22 2006

Active software packages on disk1:

c12k-os-mbi-3.4.0

c12k-base-3.4.0

c12k-admin-3.4.0

c12k-fwdg-3.4.0

c12k-lc-3.4.0

c12k-rout-3.4.0

c12k-diags-3.4.0

c12k-k9sec-3.4.0

c12k-mcast-3.4.0

c12k-mgbl-3.4.0

c12k-sbc-3.4.0

c12k-mpls-3.4.0

No Inactive software packages on disk1:

In the following example, backup information is displayed for backups located on disk1 in all RPs in the system. In this example, a separate backup was created on disk1 of node 0/3/CPU0 for a non-owner SDR.

RP/0/0/CPU0:router(admin)# show system backup disk1: location all 

System Backup information for node0_0_CPU0 on disk1:

=======================================================

Last Backup Successful

Backup started at Sat Jun 24 12:22:10 2006

 ended at Sat Jun 24 12:42:11 2006

Verify started at Sat Jun 24 12:42:12 2006

 ended at Sat Jun 24 12:48:47 2006

BOOT_DEV_SEQ_CONF=disk0:;disk1:

BOOT_DEV_SEQ_OPER=disk0:;disk1:

System Backup information for node0_3_CPU0 on disk1:

=======================================================

Last Backup Successful

Backup started at Sat Jun 24 13:02:23 2006

 ended at Sat Jun 24 13:21:30 2006

Verify started at Sat Jun 24 13:21:30 2006

 ended at Sat Jun 24 13:27:55 2006

BOOT_DEV_SEQ_CONF=disk0:;disk1:

BOOT_DEV_SEQ_OPER=disk0:;disk1:

Table 2 describes the significant fields shown in the display.

Table 2 show system backup Field Descriptions 

Field	Description
BOOT_DEV_SEQ_CONF=	ROM Monitor environmental variable for the boot disk sequence. This variable is defined by the system boot-sequence command. The first disk is the primary device; the second disk is the backup (secondary) device. The value listed in the secondary device is also used as the default backup target device for the system backup command.
BOOT_DEV_SEQ_OPER=	ROM Monitor environmental variable for the boot disks currently in use by the system.

Related Commands

Command	Description
system boot-sequence	Defines the order of boot devices used to bring up a router. The secondary device argument also defines the default backup target device used by the system backup command.
system backup	Performs a backup of software and configuration files.

show variables boot

To display the configuration register setting and boot file setting for the RPs in the system, use the show variables boot command in administration EXEC mode.

show variables boot

Syntax Description

This command has no arguments or keywords.

Defaults

No defaults behavior or values

Command Modes

Administration EXEC

Command History

Release	Modification
Release 3.3.0	This command was introduced on the Cisco CRS-1 and Cisco XR 12000 Series Router.
Release 3.4.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

Use the show variables boot command to display system boot variables for the router. This command displays the configuration register setting and boot file setting for the RPs in the system.

The configuration register setting is set with the command config-register. The boot variable is set in ROM Monitor mode. For more information on ROM Monitor mode, see Cisco IOS XR ROM Monitor Guide.

Task ID

Task ID	Operations
root-lr	read

Examples

The following is sample output from the show variables boot command:

RP/0/RP0/CPU0:router# show variables boot

Node 0/RP0/CPU0:

    BOOT variable = disk0:hfr-os-mbi-3.3.30/mbihfr-rp.vm,1;

    CONFREG variable = 0x2

Node 0/RP1/CPU0:

    BOOT variable = disk0:hfr-os-mbi-3.3.30/mbihfr-rp.vm,1;

    CONFREG variable = 0x2

Related Commands

Command	Description
config-register	Defines the configuration register setting in administration EXEC mode.
show variables system	Displays internal system environmental variables set on the router.
show version	Displays information on the Cisco IOS XR software.

show variables system

To display internal system environmental variables set on the router, use the show variables system command in EXEC mode.

show variables system

Syntax Description

This command has no arguments or keywords.

Defaults

No defaults behavior or values

Command Modes

EXEC

Command History

Release	Modification
Release 2.0	This command was introduced on the Cisco CRS-1.
Release 3.0	No modification.
Release 3.2	This command was first supported on the Cisco XR 12000 Series Router. Removed the boot keyword.
Release 3.3.0	No modification.
Release 3.4.0	No modification.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

Use the show variables system command to display system environmental variables for the router.

The boot keyword was removed from the show variables system command in Cisco IOS XR Software Release 3.2. To display the configuration register setting, use the show variables boot command in administration EXEC mode.

Task ID

Task ID	Operations
basic-services	read

Examples

The following is sample output from the show variables system command. The output is meant to be interpreted by Cisco personnel.

RP/0/RP0/CPU0:router# show variables system

TERM=vt220

GDB_PDEBUG=-P1

TERM=vt100

DIR_PREFIX=.

LOADPATH=/pkg

LD_LIBRARY_PATH=/pkg/lib

PATH=/pkg/bin

BFM_CONFIG_PATH=/pkg/bfm/config

BGP_PATH=/pkg/bgp

CONFIGS_PATH=/pkg/configs

CRAFT_PATH=/pkg/cwi

CTF_PATH=/pkg/ctf

DM_RULES_PATH=/pkg/dm/rules

ETC_PATH=/pkg/etc

FPD_PATH=/pkg/fpd

IM_RULES_PATH=/pkg/rules

INIT_STARTUP_PATH=/pkg/init.d

INSTHELPER_PATH=/pkg/other

MAN_PATH=/pkg/man

MIB_LIBRARY_PATH=/pkg/lib/mib

MIB_PATH=/pkg/mib

NETIO_SCRIPT_PATH=/pkg/script

PARSER_PATH=/pkg/parser

PARTITIONS_PATH=/pkg/partitions

QOS_PATH=/pkg/qos

SCHEMA_PATH=/pkg/schema

STARTUP_PATH=/pkg/startup

TCL_LIBRARY=/pkg/lib/tcl

UCODE_PATH=/pkg/gsr/ucode

UCODE_ROOT_PATH=/pkg/ucode

VCM_RULES_PATH=/pkg/vcmrules

JOB_ID=0

INSTANCE_ID=1

SYSMGR_TUPLE=

SYSMGR_NODE=node0_RP0_CPU0

EXIT_STATUS=0

SYSMGR_RESTART_REASON=0

AAA_USER=egran

EXEC_PID=18280619

TASKID_MAP_SIZE=72

HOME=/disk0:/usr

TMPDIR=/disk0:/var/tmp

PWD=/disk0:/usr

Related Commands

Command	Description
config-register	Defines the configuration register setting in administration EXEC mode.
show variables boot	Displays the configuration register setting and boot file setting for the RPs in the system.
show version	Displays information on the Cisco IOS XR software.

system backup

To back up the system software and configurations to a backup disk, use the system backup command in EXEC or administration EXEC mode.

system backup [target-dev] [format] [location {all | node-id}] [synchronous | asynchronous]

Syntax Description

target-dev	(Optional) Specifies the storage device used for the system backup. If a target device is not specified, then the secondary device defined with the system boot-sequence command is used. If a target device is not specified with either command, then the system backup command will return an error. •The target device cannot be the current boot device. •The target device must be large enough to store the current software set and configuration. •On the Cisco XR 12000 Series Router, the supported storage devices are disk0, disk1, and compactflash (if installed). •On the Cisco CRS-1, the supported storage devices are disk0 and disk1 (if installed).
format	(Optional) Formats a target disk that already contains a system backup. By default, the system backup command formats the target disk if that target disk does not contain a previous system backup. If the target disk already contains a backup, then the disk is not formatted again. The format keyword forces a format of the target device even if it contains a previous system backup.
location node-id	(Optional) Specifies an alternative node location for the backup target disk, such as the standby DSDRSC. By default, the backup files are copied to the target device in the current DSDRSC. Use the location node-id keyword and argument to specify an alternative node for the backup files, such as the standby DSDRSC. The node-id argument is expressed in rack/slot/module notation.
location all	(Optional) Backs up the software and configuration files to all RPs in the system or SDR. Each RP must contain a disk in the specified target device location, such as disk1.
asynchronous	(Optional) Performs the command in asynchronous mode. In asynchronous mode, the command runs in the background, and the EXEC prompt is returned as soon as possible.
synchronous	(Optional) Performs the command in synchronous mode. This mode allows the installation process to finish before the prompt is returned. This is the default mode.

Defaults

The operation is performed in synchronous mode.

The backup files are copied to the secondary device defined with the system boot-sequence command.

The backup files are copied to the target device on the current DSDRSC.

Command Modes

EXEC

Administration EXEC

Command History

Release	Modification
Release 3.4.0	This command was introduced on the Cisco CRS-1 and Cisco XR 12000 Series Router.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

Target Device for the Backup

Use the system backup command with the target-dev argument to specify the local storage device for backup software and configuration files. The target-dev argument is optional and applies only to the current backup operation.

•If a target storage device is not specified, then the files are backed up to the defined by the secondary storage device defined with the system boot-sequence command.

•If a target device is not specified with either the system backup target-dev command or the system boot-sequence command, then the backup operation is not allowed.

The target-dev can be any local storage device except the current boot device, and must be large enough to store the current software set and configuration. On the Cisco XR 12000 Series Router, the supported storage devices are disk0, disk1, and compactflash (if installed). On the Cisco CRS-1, the supported storage devices are disk0 and disk1 (if installed).

Location Node of the Target Device

By default, the backup is created on the specified target device of the active DSDRSC where the command is executed.

•To specify an alternate node for the system backup, such as the standby DSDRSC, use the system backup command with the location node-id keyword and argument.

•To perform the backup on all RPs installed in a specified SDR, use the system backup command with the location all keywords in EXEC mode.

•To perform the backup on all RPs in all SDRs installed in the system, use the system backup command with the location all keywords in administration EXEC mode.

---

Note Each RP or DRP impacted by the system backup command must contain the specified target device. For example, if the system backup command is executed for disk1 on all RPs in the system, then a flash disk must be installed in disk1 of each RP.

---

Command Modes

•Use the system backup command in administration EXEC mode to back up the administration plane configuration, including software and configurations for all SDRs in the system.

•Use the system backup command in the EXEC mode of an SDR to back up the software and configurations for a specific SDR.

Commit and Install Operations Not Allowed During Backup

•Configuration changes are not allowed during the backup process. Any attempts to commit configuration changes are rejected until the backup operation is complete.

•The backup process cannot be performed during an install operation. If an install operation is performed while a backup is in process, the backup operation terminates.

Displaying the Current Backup Information

Enter the show system backup command to display information about the current backup files. If no backup exists, an error message is displayed.

Task ID

Task ID	Operations
root-lr	read, write

Examples

The following example shows how To back up the software and configuration files for a Cisco XR 12000 Series Router.

•The command is run in administration EXEC mode, which backs up both the administration and SDR configurations.

•The target device is defined as disk1.

•Because this is the first backup on the device, the disk is formatted.

RP/0/0/CPU0:router# admin

RP/0/0/CPU0:router(admin)# system backup disk1:

Info:  node0_0_CPU0: formatting target device

Info:  node0_0_CPU0: copying admin configuration

Info:  node0_0_CPU0: copying SDR configuration

Info:  node0_0_CPU0: copying installed software

Info:  node0_0_CPU0: backup complete.

Info:  node0_0_CPU0: verifying admin configuration

Info:  node0_0_CPU0: verifying installed software

Info:  node0_0_CPU0: verify complete.

Info:  node0_0_CPU0: command succeeded.

Related Commands

Command	Description
show system backup	Displays the system backup settings and history.
system boot-sequence	Defines the order of boot devices used to bring up a router. The secondary device argument also defines the default backup target device used by the system backup command.
system backup	Performs a backup of software and configuration files.

system boot-sequence

To define the order of local storage devices used to boot a router, use the system boot-sequence command in EXEC or administration EXEC mode.

system boot-sequence {primary-device [secondary-device] | disable} [location {all | node-id}]

Syntax Description

primary-device	Defines the default device where software packages are installed and run. This device is also the default location for router configurations. The value of the primary-device argument is normally disk0.
secondary-device	Defines the secondary (backup) boot device, used by the system backup command To back up system software and configurations. •On the Cisco XR 12000 Series Router, the supported storage devices are disk0, disk1, and compactflash (if installed). •On the Cisco CRS-1, the supported storage devices are disk0 and disk1 (if installed). Note The value of the secondary-device argument must be different from the value of the primary-device argument.
disable	Temporarily disables the automatic recovery mechanism (not supported in Release 3.4.0).
location node-id	Defines the boot sequence on any RP in the current SDR. The node-id argument is expressed in rack/slot/module notation.
location all	Defines the boot sequence on all RPs in all SDRs.

Defaults

The primary device is disk0. The (optional) secondary boot device is not defined.

Command Modes

EXEC

Administration EXEC

Command History

Release	Modification
Release 3.4.0	This command was introduced on the Cisco CRS-1 and Cisco XR 12000 Series Router.

Usage Guidelines

To use this command, you must be in a user group associated with a task group that includes the proper task IDs. For detailed information about user groups and task IDs, see the Configuring AAA Services on Cisco IOS XR Software module of the Cisco IOS XR System Security Configuration Guide.

Use the system boot-sequence command to define the local storage devices used to boot a router. You can define two devices with this command:

•The value of the primary-device argument defines the default device where software packages are installed and run. This device is also the default location for router configurations.

•The value of the secondary-device argument defines the device used by the system backup command To back up system software and configurations. This field is optional.

•The secondary device can also be temporarily defined when the system backup command is executed with the target-device argument. Use the system boot-sequence command with the secondary-device argument to permanently define the secondary (backup) device.

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Note The primary and secondary device definitions remain in effect until the system boot-sequence command is entered again.

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General Usage Guidelines

•The value of the secondary-device argument must be different from the value of the primary-device argument.

•We recommend disk0 as the primary boot device in the boot sequence, and disk1 as the secondary boot device.

•The boot device specified with the system boot-sequence command must be installed in the card, or the command is rejected.

Command Modes

•Use the system boot-sequence command in administration EXEC mode to define the boot sequence for all SDRs in the system.

•Use the system boot-sequence command in EXEC mode to define the boot sequence for a specific SDR.

Location Node

•Use the location node-id keyword and argument to define the boot sequence for a specific RP.

•Use the location all keywords to define the boot sequence for all RPs in the SDR. Use this command in administration EXEC mode to define the boot sequence for all RPs in all SDRs.

Disabling Automatic Recovery

Use the system boot-sequence command with the disable keyword to disable the automatic recovery.

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Note Automatic recovery is not supported in Release 3.4.0.

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Displaying the Current Boot Sequence Settings

Enter the show system backup command to display the currently configured boot sequence devices.

Task ID

Task ID	Operations
root-lr	read, write

Examples

The following example show how to define the primary and secondary boot device for the active RP (DSC). In this example, the default location for software and configurations is disk0. The location for backups of software and configurations is disk1.

RP/0/0/CPU0:router# admin 

RP/0/0/CPU0:router(admin)# system boot-sequence disk0: disk1:

Info:  node0_0_CPU0: command succeeded.

Related Commands

Command	Description
system backup	Performs a backup of software and configuration files.
show system backup	Displays the system backup settings and history.