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Table Of Contents

Boot Commands on Cisco IOS XR Software

config-register

mirror

mirror pause

mirror resume

mirror verify

reload

reload (administration EXEC)

show epm trace boot

show mirror

show reboot

show system backup

show variables boot

show variables system

system backup

system boot-sequence


Boot Commands on Cisco IOS XR Software

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

For more information about ROM Monitor (ROMMON) and boot tasks, see Cisco IOS XR ROM Monitor Guide or 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 {node-id | 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 5.

location {node-id | all}

Specifies the node in a multishelf system. The all keyword specifies all RP nodes.


Defaults

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 keyword.

Release 3.4.0

No modification.

Release 3.5.0

No modification.

Release 3.6.0

No modification.

Release 3.7.0

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 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.

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

The most commonly used configuration register settings are described in Table 5.

Table 5 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 and default configuration on the next system boot. After logging in, the user can access EXEC mode.

0x102

Router loads the Cisco IOS XR software with the console break key disabled on the next system boot.

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

Performs a reload of the route processor.

show variables boot

Displays the configuration register setting and boot file setting for the RPs in the system.

show version

Displays information about the Cisco IOS XR software.


mirror

To configure disk mirroring on a node, use the mirror command in global configuration mode. To disable disk mirroring, use the no form of this command.

mirror location [preconfigure] node-id primary-device:secondary-device:

no mirror location node-id

Syntax Description

primary-device:

Specifies the primary boot device used to store installation packages and configuration files.

•On the Cisco XR 12000 Series Router, the supported devices are disk0:, disk1:, and compactflash: (if installed).

•On the Cisco CRS-1, the supported devices are disk0: and disk1: (if installed).

secondary-device:

Storage device on the same RP as the primary-device, to where critical data is replicated.

•Supported devices are the same as for primary-device:, but secondary-device: must be different than the primary-device:.

preconfigure

Enables you to specify a node that is not yet installed.

node-id

Node in a multishelf system. It can be a node that is not yet installed if the keyword preconfigure is used.


Defaults

No default behavior or values

Command Modes

Global configuration

Command History

Release
Modification

Release 3.6.0

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

Release 3.7.0

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 mirror command replicates all critical data contained in the primary partition of the primary boot device, onto a second storage device on the same RP. Therefore, if the primary boot device fails, applications continue to be serviced transparently by the secondary device, without having to switch control to a standby RP.

Before the mirror command can be used, the secondary storage device must be partitioned using the format command. If the primary boot device is not partitioned, once mirroring is enabled and all data on the primary boot device is replicated to the secondary device, the primary boot device is partitioned automatically. This guarantees that only critical data on the primary boot device is mirrored to the secondary device. Noncritical data, such as logging data, should not be mirrored and should, therefore, be saved to the secondary partition on the storage device.

To temporarily suspend disk mirroring without changing the configuration, use the mirror pause command in EXEC mode.

Task ID
Task ID
Operations

root-lr

read, write


Examples

The following example shows how to configure disk mirroring from the primary boot device (disk0:) to the secondary storage device (disk1:): 

RP/0/RP0/CPU0:router(config)# mirror location 0/rp0/cpu0 disk0: disk1:

Related Commands

Command
Description

format

Formats a file system.

mirror pause

Temporarily pauses disk mirroring on a node.

mirror resume

Resumes disk mirroring on a node after it has been temporarily stopped.


mirror pause

To temporarily pause disk mirroring on a node, use the mirror pause command in EXEC or administration EXEC mode.

mirror pause [location {node-id | all}]

Syntax Description

location {node-id | all}

Specifies the RP node in a multishelf system. The all keyword specifies all RP nodes.


Defaults

If no node is specified, disk mirroring is paused on the active RP.

Command Modes

EXEC
Administration EXEC

Command History

Release
Modification

Release 3.6.0

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

Release 3.7.0

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 mirror pause command temporarily pauses the mirroring of the primary boot device. This command is primarily useful during an installation operation to prevent significant performance degradation on single CPU boards. The mirror pause command does not change the configured state of mirroring, but rather causes the mirroring to be suspended until the mirror resume command is used.

The mirror pause command has no affect if the mirror configuration command is not enabled.

Task ID
Task ID
Operations

root-lr

read, write


Examples

The following example shows how to pause disk mirroring on the active RP: 

RP/0/RP0/CPU0:router# mirror pause

Related Commands

Command
Description

mirror

Configures disk mirroring on a node.

mirror resume

Resumes disk mirroring on a node after it has been temporarily stopped.


mirror resume

To resume disk mirroring on a node after it has been temporarily stopped, use the mirror resume command in EXEC or administration EXEC mode.

mirror resume [location {node-id | all}]

Syntax Description

location {node-id | all}

Specifies the RP node in a multishelf system. The all keyword specifies all RP nodes.


Defaults

If no node is specified, disk mirroring is enabled on the active RP.

Command Modes

EXEC
Administration EXEC

Command History

Release
Modification

Release 3.6.0

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

Release 3.7.0

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 mirror resume command resumes the mirroring of the primary boot device after it has been temporarily paused with the mirror pause command.

The mirror resume command has no affect if the mirror configuration command is not enabled and the mirror pause command has not been used.

Task ID
Task ID
Operations

root-lr

read, write


Examples

The following example shows how to resume disk mirroring on the active RP: 

RP/0/RP0/CPU0:router# mirror resume

Related Commands

Command
Description

mirror

Configures disk mirroring on a node.

mirror pause

Temporarily pauses disk mirroring on a node.


mirror verify

To verify disk synchronization for disk mirroring on a node, use the mirror verify command in EXEC or administration EXEC mode.

mirror verify [location node-id]

Syntax Description

location node-id

Specifies the RP node in a multishelf system.


Defaults

If no node is specified, the verification is done on the active RP.

Command Modes

EXEC
Administration EXEC

Command History

Release
Modification

Release 3.6.0

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

Release 3.7.0

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 mirror verify command verifies the synchronization consistency between the primary and secondary media devices being used in mirroring. The command verifies that the full contents are identical between the mirrored devices and reports any inconsistencies found.

Task ID
Task ID
Operations

root-lr

read, write


Examples

The following example shows how to verify the disk mirroring on the active RP: 

RP/0/0/CPU0:router# mirror verify


Mirror Verify Information for 0/0/CPU0.

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

Primary device and secondary device are fully synchronized.

Related Commands

Command
Description

mirror

Configures disk mirroring on a node.


reload

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

reload

Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values

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.

Release 3.4.1

The force keyword was not supported.

Release 3.5.0

Prompt was added to continue with reload in the event that there is no available standby node.

Release 3.6.0

No modification.

Release 3.7.0

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 fail over 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.

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.

If you use the reload command and there is no available standby node, you are prompted to continue with the reload: 

RP/0/RP0/CPU0:router# reload

Standby card not present or not Ready for failover. Proceed?[confirm]

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 the ready state, then the router fails over to the standby RP. If the standby RP is not installed or is not in the 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 (administration EXEC)

Performs a reload of a single node or all nodes in the system.

show redundancy

Displays the redundancy status of the RPs.


reload (administration EXEC)

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

reload [location {node-id | all} | rack rack-number]

Syntax Description

location

Specifies which node to reload.

node-id

The node-id argument is expressed in rack/slot/module notation.

all

Reloads all the nodes in the system.

rack

Reloads all the nodes on a specified chassis.

rack-number

Rack number of the line card chassis or fabric chassis.


Defaults

No default 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.

Release 3.4.1

The force keyword was not supported.

Release 3.5.0

No modification.

Release 3.6.0

No modification.

Release 3.7.0

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.

Note Before reloading nodes on a Cisco CRS-1 router, 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 secure domain router (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.

•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 rack rack-number command. This command cannot be used to reload the DSC line card chassis (rack 0).

•To reload a specific node on the router, specify the reload command with the location node-id keyword and argument. The node-id is expressed as 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

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]

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 3.6 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

Performs a reload of the route processor.

show redundancy

Displays the redundancy status of the RPs.


show epm trace boot

To display execution path monitoring traces, use the show epm trace boot command in administration EXEC mode.

show epm trace boot [hexdump] [last n] [reverse] [stats] [tailf] [unique] [verbose] [wrapping] [file filename original] [location node-id]

Syntax Description

hexdump

Displays traces in hexidecimal format.

last n

Displays the last n number of traces only.

reverse

Displays the most recent traces first.

stats

Displays execution path statistics.

tailf

Displays new traces as they are added.

unique

Displays unique entries only, along with the count of the number of times this entry appears.

verbose

Displays additional internal debugging information.

wrapping

Displays wrapping entries.

file filename original

Specifies the filename of the file to display.

location node-id

Specifies the RP node for which to display the execution path monitoring information. The node-id argument is expressed in rack/slot/module notation.

all

Displays mirroring information for all RP nodes in the router.


Defaults

No default behavior or values

Command Modes

Administration EXEC

Command History

Release
Modification

Release 3.6.0

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

Release 3.7.0

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 show epm trace boot command provides a simple way of tracking and time-stamping critical events to clearly understand their temporal relationship to one another and the amount of time spent performing critical operations.

Task ID
Task ID
Operations

basic services

read


Examples

The following is sample output from the show epm trace boot command: 

RP/0/RP0/CPU0:router(admin)# show epm trace boot


8 wrapping entries (1024 possible, 0 filtered, 8 total)

Jul 12 21:17:36.229 epm/boot 0/RP0/CPU0 t1  @ 00:00:14 - [init] start

Jul 12 21:17:54.746 epm/boot 0/RP0/CPU0 t1  @ 00:00:32 - [sysmgr] start

Jul 12 21:17:55.315 epm/boot 0/RP0/CPU0 t7  @ 00:00:33 - [sysmgr] start-level: start

Jul 12 21:17:59.899 epm/boot 0/RP0/CPU0 t9  @ 00:00:37 - [sysmgr] start-level: admin

Jul 12 21:20:13.564 epm/boot 0/RP0/CPU0 t15 @ 00:02:51 - [sysmgr] start-level: infra

Jul 12 21:21:47.562 epm/boot 0/RP0/CPU0 t11 @ 00:04:25 - [sysmgr] start-level: active

Jul 12 21:22:09.132 epm/boot 0/RP0/CPU0 t6  @ 00:04:47 - [sysmgr] start-level: final

Jul 12 21:22:17.475 epm/boot 0/RP0/CPU0 t9  @ 00:04:55 - [sysmgr] lr-plane-up

In this sample output, the time stamp following the @ sign is the elapsed time in the format hh:mm:ss since the execution phase started (for example, since node start, in the case of a boot).

show mirror

To display disk mirroring information, use the show mirror command in EXEC or administration EXEC mode.

show mirror [location {all | node-id}]

Syntax Description

location node-id

Specifies RP node for which to display the mirroring information. The node-id argument is expressed in rack/slot/module notation.

all

Displays mirroring information for all RP nodes in the router.


Defaults

No default behavior or values

Command Modes

EXEC
Administration EXEC

Command History

Release
Modification

Release 3.6.0

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

Release 3.7.0

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.

Task ID
Task ID
Operations

filesystem

read


Examples

The following is sample output from the show mirror command: 

RP/0/0/CPU0:router# show mirror 


Mirror Information for 0/0/CPU0.

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

 Mirroring Enabled

   Configured Primary:         disk0:

   Configured Secondary:       disk1:


 Current Mirroring State:      Syncing Files

   Current Physical Primary:   disk1:

   Current Physical Secondary: disk0:


 Mirroring Logical Device:     disk0:


 Physical Device     State       Flags

--------------------------------------------------------

  disk0:           Available     Enabled Formatted 

  disk1:           Available     Enabled Formatted 

  compactflash:    Not Present   

  disk0a:          Available     Formatted 

  disk1a:          Available     Formatted 

  compactflasha:   Not Present   


Mirroring Rommon Variable

 BOOT_DEV_SEQ_CONF = disk0:;disk1:

 BOOT_DEV_SEQ_OPER = disk1:

 MIRROR_ENABLE = Y


 Syncing Files

  Number Left:     5735

  Current file:    c12k-base-3.6.0.10I/schema/l2protocols_srp_action.schema

  Current state:   File is Syncing

Table 6 describes the significant fields shown in the display.

Table 6 show mirror Field Descriptions 

Field
Description

Mirroring Enabled

Indicates whether mirroring is enabled or disabled.

Configured Primary

If mirroring is enabled, the configured primary disk for mirroring.

Configured Secondary

If mirroring is enabled, the configured secondary disk for mirroring.

Current Mirroring State

Current status of mirroring. Possible values are as follows:

Syncing files—Files are being synchronized between the primary and secondary disks.

Not Configured—Mirroring is not configured.

Mirroring Paused—In this state no mirroring is being done to the secondary device and the disk redundancy has been removed. The values of the BOOT_DEV_SEQ_OPER and MIRROR_ENABLE variables reflect this.

Redundant—The primary and secondary disks are totally in synchronization. Any read or write failure on the primary device results in disk redundancy failover such that all operations are performed on the secondary device.

Current Physical Primary

Current primary disk.

Current Physical Secondary

Current secondary disk.

Mirroring Logical Device

Device name used by the mirroring process to intercept all application requests to that named device before passing them through to one of the mirrored physical devices.

Physical Device

Physical disk in router.

State

Status of the disk. Possible values are as follows:

Available—Disk exists in router and is available.

Not present—Disk does not exist in router. "a" partitions of disks are only available after the disk has been formatted with the partition keyword.

Flags

Enabled—Disk mirroring has been enabled on this device and the device is part of the mirroring process.

Repaired—During the boot, some minor inconsistencies were discovered on the disk and were repaired to make the file system consistent.

Formatted—Disk was formatted before mirroring was enabled.

BOOT_DEV_SEQ_CONF=

ROM Monitor environmental variable for the boot disk sequence. This variable is is set when mirroring is enabled through the mirror configuration command. The devices in this ROMMON variable declare the primary and the secondary devices of the mirroring process. The first device is the primary device and the second device is the secondary device in the mirroring process.

Note This variable is also shared by the disk backup feature. This variable can also be set or unset using the system boot-sequence command of the disk backup feature. But the use of system boot-sequence and system backup commands is blocked, if mirroring is enabled.

BOOT_DEV_SEQ_OPER=

ROM Monitor environmental variable that reflects the state of the disk redundancy status. When mirroring is enabled and the state is redundant, this variable is set to the primary device followed by the secondary device. When mirroring is not in the redundancy state, then this variable is updated to contain only the primary device.

MIRROR_ENABLE

ROM Monitor environmental variable whose value reflects the mirroring status. If it is set to Y, then mirroring is enabled. If it is set to P, then mirroring is paused. If empty, mirroring is not enabled.


Related Commands

Command
Description

mirror

Configures disk mirroring on a node.

mirror verify

Verifies disk synchronization for disk mirroring on a node.


show reboot

To display reboot information for a node, use the show reboot command in EXEC or administration EXEC mode.

show reboot {[first | last] {crashinfo | syslog | trace} | graceful | history [reverse] | pcds} location node-id

Syntax Description

first

Displays information about the first ungraceful reboot.

last

Displays information about the last ungraceful reboot.

crashinfo

Displays crash information for an ungraceful reboot.

syslog

Displays the syslogs related to an ungraceful reboot.

trace

Displays trace information for an ungraceful reboot.

graceful

Displays information about the last graceful reboot.

history

Displays the reboot history of a specific node.

reverse

Displays the reboot history information in reverse chronological order.

pcds

Displays PCDS critical information about the last ungraceful reboot.

location node-id

Specifies which node to reload. The node-id argument is expressed in rack/slot/module notation.


Defaults

No default behavior or values

Command Modes

EXEC
Administration EXEC

Command History

Release
Modification

Release 3.6.0

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

Release 3.7.0

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 history keyword for the show reboot command displays all reboot causes stored for previous node resets.

Crash information (crashinfo), syslog, and kernel dumper ltrace (trace) can be displayed for the first or last reboot if it is an ungraceful reboot.

Task ID
Task ID
Operations

system

read


Examples

The following is sample output from the show reboot command with the history keyword: 

RP/0/RP0/CPU0:router# show reboot history location 0/rp0/cpu0 


No  Time                      Cause Code  Reason

--------------------------------------------------------------------------------

01  Thu Jul 19 00:25:03 2007  0x00000001  Cause: User Initiated reload 

                                            Process: reload 

                                                Traceback: fc1941a0 fc194290 fc0

                                          42d90 48200624 48202120 0

02  Thu Jul 19 20:32:57 2007  0x21000010  Cause: Missed deadline, client: sc-reddrv-main, 
                                                 timeout: 5                  

                                            Process: wd-critical-mon 

                                                Traceback: fc1941a0 fc194290 482

                                          00738 482013cc 48201c04 fc1d4fb0

03  Thu Jul 19 22:21:05 2007  0x00000000  

04  Thu Jul 19 22:44:37 2007  0x00000045  Cause: Non-dSC node booted with composite image                             

                                            Process: insthelper 

                                                Traceback: fc1941a0 fc194290 fc6

                                          1e4a0 4820f928 48210654 48201cc0

05  Thu Jul 19 22:52:19 2007  0x00000045  Cause: Non-dSC node booted with composite image                             

                                            Process: insthelper 

                                                Traceback: fc1941a0 fc194290 fc6

                                          204a0 4820f928 48210654 48201cc0

06  Fri Jul 20 02:10:51 2007  0x00000001  Cause: User Initiated reload 

                                            Process: reload 

                                                Traceback: fc15a1a0 fc15a290 fc0

                                          45d90 48200624 48202120 0

07  Mon Jul 23 19:39:49 2007  0x00000045  Cause: RP cold booted with incorrect software                               

                                            Process: insthelper 

                                                Traceback: fc1941a0 fc194290 fc6

                                          1a4a0 4820f8b0 48210fc8 48201cc0

08  Mon Jul 23 19:54:45 2007  0x00000002  Cause: User Initiated Reboot 

                                            Process: reboot 

                                                Traceback: fc1941a0 fc194290 482

                                          00154 48201468 0 0

The following is sample output from the show reboot command with the first crashinfo keywords: 

RP/0/RP0/CPU0:router# show reboot first crashinfo location 0/rp0/cpu0 


Crashinfo Timestamp: Thu Jul 19 20:32:57 2007


20070719 20:32:57


Crash Reason: Cause code 0x21000010 Cause: Missed deadline, client: sc-reddrv-main, 
timoeut: 5                    Process: wd-critical-mon                                                        
Traceback: fc1941a0 fc194290 48200738 482013cc 48201c04 fc1d4fb0 Timezone UTC0


Exception at 0xfc1944c8 signal 5 c=1 f=3


Active process(s):

        pkg/bin/wd-critical-mon Thread ID 1 on cpu 0

        pkg/bin/l3test Thread ID 0 on cpu 1


       REGISTER INFO 

        r0        r1        r2        r3

  R0   01000000  4817e8c0  4820e208  000000de  

        r4        r5        r6        r7

  R4   fc1b4856  7fffffff  4817e738  fc1b4856  

        r8        r9       r10       r11

  R8   00000000  602cf522  00000000  00000000  

       r12       r13       r14       r15

  R12  602cf51c  4820e1a0  00000000  00000000  

       r16       r17       r18       r19

  R16  00000000  00000000  00000000  00000000  

       r20       r21       r22       r23

  R20  00000000  00000000  48200000  48200000  

       r24       r25       r26       r27

  R24  48200000  48200000  48200000  48200000  

       r28       r29       r30       r31

  R28  00000028  00000001  21000010  6029b000  

       cnt        lr       msr        pc

  R32  00000000  fc194290  0002d932  fc1944c8  

       cnd       xer

  R36  44000094  20000006  


               SUPERVISOR REGISTERS  


              Memory Management Registers


              Instruction BAT Registers  

               Index #                Value

              IBAT0U #             0x1ffe

              IBAT0L #               0x12

              IBAT1U #                  0

              IBAT1L #                  0

              IBAT2U #         0x30000ffe

              IBAT2L #         0xf0000032

              IBAT3U #         0xfffc0003

              IBAT3L #            0x40011


              Data BAT Registers  

               Index #                Value

              DBAT0U #             0x1ffe

              DBAT0L #               0x12

              DBAT1U #                  0

              DBAT1L #         0x10000012

              DBAT2U #         0x30000ffe

              DBAT2L #         0xf000006a

              DBAT3U #         0xfffc0003

              DBAT3L #            0x40011


              Segment Registers

               Index #             SR-Value

                   0 #                  0

                   1 #                  0

                   2 #                  0

                   3 #                  0

                   4 #                  0

                   5 #                  0

                   6 #                  0

                   7 #                  0

                   8 #                  0

                   9 #                  0

                  10 #                  0

                  11 #                  0

                  12 #                  0

                  13 #                  0

                  14 #                  0

                  15 #                  0


              Exception Handling Registers

       Data Addr Reg #                DSISR

        0x602cf440 #         0x42000000

     SPRG0 #      SPRG1 #      SPRG2 #      SPRG3

     0x1 # 0x21000010 # 0x6029b000 #        0

   SaveNRestore SRR0 #    SaveNRestore SRR1

        0xfc1944c4 #            0x2d932


Miscellaneous Registers

    Processor Id Reg #                  0

                HID0 #         0x8410c0bc

                HID1 #         0x9001ac80


              MSSCR0 #            0x88000

              MSSSR0 #                  0


 STACK TRACE 

#0 0xfc194290

#1 0x48200738

#2 0x482013cc

#3 0x48201c04

#4 0xfc1d4fb0

Related Commands

Command
Description

reload

Performs a reload of the route processor.


show system backup

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

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

Syntax Description

target-device

(Optional) Displays the backup details and history for the specified device.

•On the Cisco XR 12000 Series Router, the supported devices are disk0:, disk1:, and compactflash: (if installed).

•On the Cisco CRS-1, the supported devices are disk0: and disk1: (if installed).

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 designated secure domain router system controller (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.

Release 3.5.0

No modification.

Release 3.6.0

No modification.

Release 3.7.0

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

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

•Use the target-device argument command to display backup information for a specified device on a RP node.

•Use the details keyword to list information about the software packages and configuration files stored on the backup device.

•Use the diff keyword to display the differences between the software and configurations on the backup device and the software and configurations on the currently active boot disk.

•Use 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 secure domain router (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 about 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 7 describes the significant fields shown in the display.

Table 7 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 route processors (RPs) in the system, use the show variables boot command in administration EXEC mode.

show variables boot [location {all | node-id}]

Syntax Description

location node-id

Specifies the node to reload. The node-id argument is expressed in rack/slot/module notation.

all

Reloads all the nodes in the system.


Defaults

No default 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

Support was added for the location keyword.

Release 3.5.0

No modification.

Release 3.6.0

No modification.

Release 3.7.0

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. Use the location node-id keyword and argument to display the configuration register setting for a specific card.

The configuration register setting is set with the command config-register. The boot variable is set in ROM Monitor mode. For more information about 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 about 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.

Release 3.5.0

No modification.

Release 3.6.0

No modification.

Release 3.7.0

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 about 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-device] [format] [synchronous | asynchronous] [location {all | node-id}]

Syntax Description

target-device

(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 returns 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 secure domain router system controller (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.

Release 3.5.0

No modification.

Release 3.6.0

No modification.

Release 3.7.0

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.

Target Device for the Backup

Use the system backup command with the target-device argument to specify the local storage device for backup software and configuration files. The target-device 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 secondary storage device defined with the system boot-sequence command.

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

The target-device 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 router, 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 router processors (RPs) installed in a specified secure domain router (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 distributed route processor (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 Installation 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 installation operation. If an installation 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

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

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.

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.

Release 3.4.1

The disable keyword and secondary-device argument were introduced.

Release 3.5.0

No modification.

Release 3.6.0

No modification.

Release 3.7.0

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 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.

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

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 secure domain routers (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 route processor (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.

Note Automatic recovery is supported from Cisco IOS XR Software Release 3.4.1.

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 shows 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.


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