Contents

Introduction

Prerequisites

Requirements

Components Used

Problem

Solution

Introduction

This document describes the procedure to recover the password on XE-SDWAN.

Prerequisites

Requirements

There are no specific requirements for this document.

Components Used

The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, ensure that you understand the potential impact of any command.

Problem

In XE-SDWAN (version 16.10.3 onward), there is a default one-time admin password due to security reasons which can be easily ignored by the user and potentially can get into a user lock situation. This is especially dangerous during initial router setup if control connection with vManage controller is not established; you cannot simply attach new template with username and password set. This article gives a detailed procedure on how to recover.

Username: admin

Password:

Router#

Sep 23 20:36:03.133: SDWAN INFO: WARNING: Please configure a new username and password; one-time user admin is removed.

This is the new message on the console after login with default admin/admin credentials.

Note: This procedure wipes out the current configuration, so please take a backup of the configuration if possible before you proceed further.

Solution

This is an example of how a device gets locked as it ignores the onetime password message from console logs:

rommon 2 > boot bootflash:asr1000-ucmk9.16.10.3a.SPA.bin

File size is 0x2f7f66c6

Located asr1000-ucmk9.16.10.3a.SPA.bin

Image size 796878534 inode num 17, bks cnt 194551 blk size 8*512

################################################################################################################################################################################################################################################################################################################################################################################################################################

Boot image size = 796878534 (0x2f7f66c6) bytes

<<<<<<<< OUTPUT TRIMMED >>>>>>>>>

Press RETURN to get started!

<<<<<<<< OUTPUT TRIMMED >>>>>>>>>

*Sep 23 20:35:33.558: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon vdaemon @ pid 2218 in vpn 0

*Sep 23 20:35:33.635: %Cisco-SDWAN-Router-TTMD-6-INFO-1200001: R0/0: TTMD: Starting

*Sep 23 20:35:33.725: %Cisco-SDWAN-Router-CFGMGR-6-INFO-300001: R0/0: CFGMGR: Starting

*Sep 23 20:35:33.823: %Cisco-SDWAN-Router-FPMD-6-INFO-1100001: R0/0: FPMD: Starting

*Sep 23 20:35:33.953: %Cisco-SDWAN-Router-FTMD-6-INFO-1000020: R0/0: FTMD: SLA class '__all_tunnels__' added at index '0': loss = 128%, latency = 2147483647 ms

*Sep 23 20:35:34.424: %Cisco-SDWAN-Router-FTMD-4-WARN-1000007: R0/0: FTMD: Connection to TTM came up. p_msgq 0x7fe1b3235500 p_ftm 0x9a3020

*Sep 23 20:35:41.475: %DMI-5-INITIALIZED: R0/0: syncfd: process has initialized.

*Sep 23 20:35:44.975: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback65528, changed state to up

*Sep 23 20:35:44.991: %SYS-5-LOG_CONFIG_CHANGE: Buffer logging: level debugging, xml disabled, filtering disabled, size (262144)

*Sep 23 20:35:45.025: SDWAN INFO: Received ENABLE_CONSOLE message from sysmgr

*Sep 23 20:35:45.025: Console Enabled

*Sep 23 20:35:45.025: SDWAN INFO: PNP start, status: success

*Sep 23 20:35:45.023: %DMI-5-ACTIVE: R0/0: nesd: process is in steady state.

*Sep 23 20:35:45.888: EXEC mode enabled on console

User Access Verification

Username: admin

Password:

Router#

*Sep 23 20:36:03.133: SDWAN INFO: WARNING: Please configure a new username and password; one-time user admin is removed.

*Sep 23 20:36:03.240: %DMI-5-CONFIG_I: R0/0: nesd: Configured from NETCONF/RESTCONF by system, transaction-id 14

Router#exit

Press RETURN to get started.

User Access Verification

Username: admin

Password:

% Login invalid

Press RETURN to get started.

User Access Verification

Username:

Login incorrect

Username:

Step 1. Initiate the process with these steps:

1. Power cycle the router and force it get into the ROMmon mode with break sequence (ctrl+break, ctrl+c).

2. Change the config register to 0xA102 or 0x8000.

Note: We recommend 0xA102 because it is less prone to user errors. For example, if you set config register by mistake to 0x800 instead of 0x8000 (two zeros instead of three), the console baud rate is set to 4800 instead of configuration bypass. For more information about configuration registers, please see  https://www.cisco.com/c/en/us/support/docs/routers/10000-series-routers/50421-config-register-use.html

Note: In Cisco IOS® XE software, the configuration bypass cannot be done with 0x2142 config register because Cisco IOS® XE SD-WAN software stores configuration in a different way in the Configuration Data Base (CDB) on the flash. From Cisco IOS® XE SD-WAN software 16.10.1, onward, bit 15 can be set to 1 to bypass configuration, hence configuration register is, for example, 0xA102. This is a result of bit 15 at (0x8000) in combination with hex value of default register 0x2102.

3. Reset the box (check the output for the command):

Initializing Hardware ...

System integrity status: 90170400 12030117

U

System Bootstrap, Version 16.3(2r), RELEASE SOFTWARE

Copyright (c) 1994-2016  by cisco Systems, Inc.

Current image running: Boot ROM1

Last reset cause: PowerOn

Warning: Octeon PCIe lanes not x2 width: sts=0x5011

ASR1001-HX platform with 16777216 Kbytes of main memory

rommon 1 >     confreg 0x8000

You must reset or power cycle for new config to take effect

rommon 2 > i

Reset .......

Initializing Hardware ...

System integrity status: 90170400 12030117

Trixie configured

CaveCreek Link Status reg: Bus/Dev/Func: 0/28/1, offset 0x52, status = 00003011Times left ms:0000005C

Initializing DS31408...

Read MB FPGA Version: 0x16051716

DS31408 locked to local Oscillator

Taking Yoda out of reset...

Yoda VID enabled...

Crypto enabled...

Warning: Octeon PCIe link width not x2: sts=00001001

requesting link retrain

Astro enabled...

Astro PLL/bandgap init...

NP5c out of reset...

U

System Bootstrap, Version 16.3(2r), RELEASE SOFTWARE

Copyright (c) 1994-2016  by cisco Systems, Inc.

CPLD Version: 16033009 ASR1001-HX Slot:0

Current image running: Boot ROM1

Last reset cause: LocalSoft

Reading confreg 0x8000

Enabling interrupts

Initializing SATA controller...done

Checking for PCIe device presence...

Warning: Octeon PCIe lanes not x2 width: sts=0x5011 done

ASR1001-HX platform with 16777216 Kbytes of main memory

autoboot entry: NVRAM VALUES: bootconf: 0x0, autobootstate: 0

autobootcount: 0, autobootsptr: 0x0

Step 2. Boot the XE-SDWAN .bin image from rommon:

rommon 3 > boot bootflash:asr1000-ucmk9.16.10.3a.SPA.bin

Warning: filesystem is not clean

File size is 0x2f7f66c6

Located asr1000-ucmk9.16.10.3a.SPA.bin

Image size 796878534 inode num 17, bks cnt 194551 blk size 8*512

#######################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################################

File is comprised of 200 fragments (0%)

<<<<<< OUTPUT TRIMMED >>>>>>>>

Press RETURN to get started!

<<<<<< OUTPUT TRIMMED >>>>>>>>

*Sep 23 20:47:34.124: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon cfgmgr @ pid 5018 in vpn 0

*Sep 23 20:47:34.125: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon fpmd @ pid 5019 in vpn 0

*Sep 23 20:47:34.125: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon ftmd @ pid 5020 in vpn 0

*Sep 23 20:47:34.126: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon ompd @ pid 5021 in vpn 0

*Sep 23 20:47:34.127: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon ttmd @ pid 5022 in vpn 0

*Sep 23 20:47:34.127: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon vdaemon @ pid 5023 in vpn 0

*Sep 23 20:47:34.214: %Cisco-SDWAN-Router-TTMD-6-INFO-1200001: R0/0: TTMD: Starting

*Sep 23 20:47:34.307: %Cisco-SDWAN-Router-CFGMGR-6-INFO-300001: R0/0: CFGMGR: Starting

*Sep 23 20:47:34.382: %Cisco-SDWAN-Router-FPMD-6-INFO-1100001: R0/0: FPMD: Starting

*Sep 23 20:47:34.525: %Cisco-SDWAN-Router-FTMD-6-INFO-1000020: R0/0: FTMD: SLA class '__all_tunnels__' added at index '0': loss = 128%, latency = 2147483647 ms

*Sep 23 20:47:41.143: %ONEP_BASE-6-CONNECT: [Element]: ONEP session Application:com.cisco.syncfd Host:Router ID:726 User:a has connected.

*Sep 23 20:47:41.997: %DMI-5-INITIALIZED: R0/0: syncfd: process has initialized.

*Sep 23 20:47:45.480: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback65528, changed state to up

*Sep 23 20:47:45.495: %SYS-5-LOG_CONFIG_CHANGE: Buffer logging: level debugging, xml disabled, filtering disabled, size (262144)

*Sep 23 20:47:45.534: SDWAN INFO: Received ENABLE_CONSOLE message from sysmgr

*Sep 23 20:47:45.534: Console Enabled

*Sep 23 20:47:45.534: SDWAN INFO: PNP start, status: success

*Sep 23 20:47:45.531: %DMI-5-ACTIVE: R0/0: nesd: process is in steady state.

*Sep 23 20:47:45.945: EXEC mode enabled on console

Step 3. Log in with default admin credentials:

User Access Verification

Username: admin

Password:

Router#

*Sep 23 20:48:16.659: SDWAN INFO: WARNING: Please configure a new username and password; one-time user admin is removed.

*Sep 23 20:48:16.767: %DMI-5-CONFIG_I: R0/0: nesd: Configured from NETCONF/RESTCONF by system, transaction-id 14

Router#

Router#sh ver | i Configuration register

Configuration register is 0x8000

Step 4. This is a mandatory step.

1. Change the configuration register back to 0x2102 and perform a sdwan software reset. This wipes out all the configuration that exists.

2. The router goes on a reboot at this step and boots up with software specified in the packages.conf configuration file:

Router#request platform software sdwan software reset

*Sep 23 20:52:17.400: %INSTALL-5-INSTALL_START_INFO: R0/0: install_engine: Started install activate bootflash:asr1000-ucmk9.16.10.3a.SPA.bin

*Sep 23 20:52:23.919: %SYS-7-NV_BLOCK_INIT: Initialized the geometry of nvram

Router#

*Sep 23 20:52:47.943: %INSTALL-5-INSTALL_COMPLETED_INFO: R0/0: install_engine: Completed install activate PACKAGESep 23 20:53:04.302:

Initializing Hardware ...

System integrity status: 90170400 12030117

U

System Bootstrap, Version 16.3(2r), RELEASE SOFTWARE

Copyright (c) 1994-2016  by cisco Systems, Inc.

Current image running: Boot ROM1

Last reset cause: LocalSoft

Warning: Octeon PCIe lanes not x2 width: sts=0x5011

ASR1001-HX platform with 16777216 Kbytes of main memory

File size is 0x00001a47

Located packages.conf

Image size 6727 inode num 1120114, bks cnt 2 blk size 8*512

#

File size is 0x01e7df8e

Located asr1000-rpboot.16.10.3a.SPA.pkg

Image size 31973262 inode num 1120126, bks cnt 7806 blk size 8*512

########################################################################################################################################################################################################################################################################################################################

Boot image size = 31973262 (0x1e7df8e) bytes

ROM:RSA Self Test Passed

ROM:Sha512 Self Test Passed

<<<<<< OUTPUT TRIMMED >>>>>>>>

*Sep 23 20:57:13.347: %ONEP_BASE-6-CONNECT: [Element]: ONEP session Application:com.cisco.syncfd Host:Router ID:8029 User:a has connected.

*Sep 23 20:57:15.226: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon cfgmgr @ pid 4435 in vpn 0

*Sep 23 20:57:15.227: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon fpmd @ pid 4436 in vpn 0

*Sep 23 20:57:15.228: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon ftmd @ pid 4437 in vpn 0

*Sep 23 20:57:15.229: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon ompd @ pid 4438 in vpn 0

*Sep 23 20:57:15.229: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon ttmd @ pid 4439 in vpn 0

*Sep 23 20:57:15.230: %Cisco-SDWAN-Router-SYSMGR-6-INFO-200017: R0/0: SYSMGR: Started daemon vdaemon @ pid 4440 in vpn 0

*Sep 23 20:57:15.308: %Cisco-SDWAN-Router-TTMD-6-INFO-1200001: R0/0: TTMD: Starting

*Sep 23 20:57:15.391: %Cisco-SDWAN-Router-CFGMGR-6-INFO-300001: R0/0: CFGMGR: Starting

*Sep 23 20:57:15.484: %Cisco-SDWAN-Router-FPMD-6-INFO-1100001: R0/0: FPMD: Starting

*Sep 23 20:57:15.620: %Cisco-SDWAN-Router-FTMD-6-INFO-1000020: R0/0: FTMD: SLA class '__all_tunnels__' added at index '0': loss = 128%, latency = 2147483647 ms

*Sep 23 20:57:16.092: %Cisco-SDWAN-Router-FTMD-4-WARN-1000007: R0/0: FTMD: Connection to TTM came up. p_msgq 0x7f5815c35500 p_ftm 0x9a3020

*Sep 23 20:57:27.380: %DMI-5-INITIALIZED: R0/0: syncfd: process has initialized.

*Sep 23 20:57:35.032: %LINEPROTO-5-UPDOWN: Line protocol on Interface Loopback65528, changed state to up

*Sep 23 20:57:35.048: %SYS-5-LOG_CONFIG_CHANGE: Buffer logging: level debugging, xml disabled, filtering disabled, size (262144)

*Sep 23 20:57:35.081: SDWAN INFO: Received ENABLE_CONSOLE message from sysmgr

*Sep 23 20:57:35.081: Console Enabled

*Sep 23 20:57:35.081: SDWAN INFO: PNP start, status: success

*Sep 23 20:57:35.079: %DMI-5-ACTIVE: R0/0: nesd: process is in steady state.

*Sep 23 20:57:35.682: EXEC mode enabled on console

Step 5. Now, once again you are prompted with one-time admin credentials. After this step, do not forget to change the default password. It is recommended to add an additional user also. If you miss this step and get locked out, then you need to repeat all the steps again.

User Access Verification

Username: admin

Password:

Router#

*Sep 23 20:58:18.048: SDWAN INFO: WARNING: Please configure a new username and password; one-time user admin is removed.

*Sep 23 20:58:18.155: %DMI-5-CONFIG_I: R0/0: nesd: Configured from NETCONF/RESTCONF by system, transaction-id 18

Router#confi

Router#config-tr

System is still initializing. Wait for PnP to be completed or terminate PnP with the command:

pnpa service discovery stop

Router#pnpa service discovery stop

PNP-EXEC-DISCOVERY (1): Stopping PnP Discovery...

Waiting for PnP discovery cleanup ..

Router#

*Sep 23 20:58:48.997: %PNP-6-PNP_DISCOVERY_ABORT_ON_CLI: PnP Discovery abort on CLI input

*Sep 23 20:58:48.999: %DMI-5-SYNC_START: R0/0: syncfd: External change to running configuration detected. The running configuration will be synchronized to the NETCONF running data store.

*Sep 23 20:58:54.955: %DMI-5-SYNC_COMPLETE: R0/0: syncfd: The running configuration has been synchronized to the NETCONF running data store.

*Sep 23 20:58:54.955: %DMI-5-ACTIVE: R0/0: syncfd: process is in steady state.

*Sep 23 20:58:55.150: %DMI-5-CONFIG_I: R0/0: nesd: Configured from NETCONF/RESTCONF by system, transaction-id 181

*Sep 23 20:58:55.676: %Cisco-SDWAN-Router-SYSMGR-5-NTCE-200050: R0/0: SYSMGR: System status solid green (reason: All daemons up)

Router#

*Sep 23 20:59:00.083: %INSTALL-5-INSTALL_START_INFO: R0/0: install_engine: Started install commit PACKAGE

*Sep 23 20:59:00.327: %INSTALL-5-INSTALL_COMPLETED_INFO: R0/0: install_engine: Completed install commit PACKAGE

Router#sh ver | i register

Configuration register is 0x2102

Router#sh sdwan ver

*Sep 23 20:59:12.640: %PNP-6-PNP_DISCOVERY_ABORT_ON_CLI: PnP Discovery abort on CLI input

*Sep 23 20:59:12.640: %PNP-6-PNP_DISCOVERY_STOPPED: PnP Discovery stopped (Discovery Aborted)16.10.3a

Router#

Router#sh sdwan ver

16.10.3a

Router#

Router#conf

Router#config-tr

admin connected from 127.0.0.1 with console on Router

Router(config)# username admin privilege 15   secret <your password>

Router(config)# username  sdwan privilege 15 secret <your password>

Router(config)# comm

Commit complete.

Router(config)#

*Sep 23 21:00:59.270: %DMI-5-CONFIG_I: R0/0: nesd: Configured from NETCONF/RESTCONF by admin, transaction-id 204

Router(config)# end

Step 6. Verify that you still have access to the device with newly created username and password:

Router#exit

Router con0 is now available

Press RETURN to get started.

User Access Verification

Username: admin

Password:

Router>en

Router#

Router#exit

Router con0 is now available

Press RETURN to get started.

User Access Verification

Username: sdwan

Password:

Router>en

Router#