How to factory reset rommon cisco router. I learned that 4331 does have a reset button at the back of the device but it seems like the ISR 4431 version does not have reset button on the outside or visibly. ********* Notice ********* - The process is done on real equipment Cisco router ISR 4321/K9. etc in the device. Within 60 seconds, press the Break key ( not CTRL+Break ). Perform a reset in ROMMON mode to automatically set the environment variables. After a factory reset, the device clears all its environment variables including the MAC_ADDRESS and the IP_ADDRESS, which are required to locate and load the software. dir flash: 2. To get into ROMMON, you can hold down the reset button on the front/back of the device for 5-10 seconds before IOS boots up. Bypass KSH authentication with AUX_AUTHEN_LEVEL=0 and boot. Mar 3, 2024 · First you should issue the dir bootflash: command to locate a valid image for your router. Thanks to balaji. May 25, 2020 · After the factory reset process is complete, the router reboots to ROMMON mode. Mar 24, 2021 · #HowToReset #CiscoRouter #PasswordConfigHow To Reset Cisco Router - Password & Config Reset to Factory Default [Config Register 0x2142]Download Link - Putty Mar 3, 2019 · Make sure that you are using default speed/port settings on the hyperterminal screen. If you are changing the confreg to 0x2142 of the sp naturally, it will not ignore the start-up configuration (2142 means ignore the start-up config). Samir Solved: Factory reset for Cisco IR809G router - Cisco Community. There are two ways to reset an IR829 to factory settings, depending on the version of IOS installed. Aug 25, 2021 · After the factory reset process is complete, the router reboots to ROMMON mode. A 3945 came to me that was returned from the field and I was instructed to clean it up (physically), wipe the config and upgrade the ios. The data can be configuration, log files, boot variables, core files, and so on. 154-3. M4. For example: Issue the no shutdown command on every interface that you use. This is the correct process to recover this infinite boot loop issue: 1. 03. For reseting you need to change the config register value to 0x2142. If you are using PUTTY, right click on the top of PUTTY Window, and select Special Command > Break. I am trying to go into rommode for password recovery but am not able to. Try downloading the firmware with "Advanced Security" feature set. T. This procedure is faster than the Xmodem download. Ces deux méthodes sont décrites ci-dessous. For Cisco IOS® Version 15. If the router is already powered on, power it off and then power it on. There are several memory components in the device(s), as listed for the C111x device as an example in the following table. 1) Power off the router. Router#copy flash:c3845-adventerprisek9-mz. Router> enable Password: <password> Router# Enter the enable command and password to access privileged EXEC commands. I cannot get to ROMMON, nor can the CTRL-B. May 3, 2023 · Thanks for sharing your experience and how you solved your problem. The default gateway should be a routing device in the same subnet as the IP address configured in Step 6. Do you want to reset the router to the factory Reboots the router with the new configuration register value. rommon 2> reset. If you issue a show ip interface brief command, every interface that you want to use should be "up up". 3) Break into rommon. Ensure that there is uninterrupted power supply when the factory reset process is in progress. I am try to perform prepare my cisco 2600 for my LAB but when followed the proper settings, I received the below errors: C2600 platform with 49152 Kbytes of main memory rommon 1 > rommon 1 > confreg 0x2142 rommon 2 > reset System Bootstrap, Mar 5, 2023 · 04-25-2023 08:51 AM. SPA. - Sep 13, 2023 · Method 1. Enter the password, or just press enter if there is no password set. One of my colleagues initially setup the first C8500-12X however, forgot to add a local user / enable password, but did setup tacacs authentication. power off the device. Recovering a router from ROMmon is not possible by telneting to any of the interfaces. Reset button doesn't work and I can't go into rommon mode - ctrl+break, ctrl+c, special command -> break (in PuTTy) doesn't work also. Press and hold the reset button for 10 seconds, and then Dec 14, 2006 · Type enable secret <password> in order to change the enable secret password. 11-11-2020 03:45 AM. 15. 168. I just bought a used Router 2811 which is protected by an unknown password. Remarque : Pour afficher des informations sur les commandes dans cet article, consultez le document de référence traitant de la commande des principes de base de la configuration Cisco IOS®. Type enable at the Router > prompt. Step 1. Otherwise, power it on. I push enter but it says: " authentication error" I see there is some errors during startup in IOS row 1,5,6,7,8 is little strange to see errors on brand new router. rommon 1 >. Jul 7, 2014 · Solved: Dears, Have you any idea about how to recover password? as i forgot to configure a username and configured it to login local under console and VTY. If is Nov 7, 2020 · rommon 7> set IP_ADDRESS=192. Level 10. Pleas i need your help M. Pop the lid of the router. Step 2: Wait for 10 seconds of startup and send a break signal to terminal. Do you want to reset the router to the factory default. below the out put. It is possible to reset your Cisco router back to its factory default configuration. Type reset at the rommon 2> prompt. 16. If a Cisco router has a reset button, you can follow this procedure to restore its factory settings using the reset button: Step 1. If the Cisco IOS® version is 15. Use this procedure to upgrade the ROMmon on a router: SUMMARY STEPS. Nov 30, 2022 · Reset before you continue: rommon 7 > reset. Type confreg 0x2142 at the rommon 1> prompt in order to boot from Flash. Perform these steps to configure the router to boot up in ROM monitor mode the next time it is rebooted. 4- Reinstall licenses, apps and revelant data. Rick Hi, i have quite the same issue as previous post( https://supportforums. But now i have a new switch C9200L-48T-4G-E V02 already factory reseted by me but not successful so far. router (config) #config-register 0x2142. Enters global configuration mode. If you have the zero-touch provisioning (ZTP) capability setup, after the router completes the factory reset procedure, the router reboots with ZTP configuration. Tried both method of sending Ctrl+Brk sequence as well as removing flash from the router. Type no after each setup question, or press Ctrl-C in order to skip the initial setup procedure. After you open your connection, press enter a couple times, and you should get a prompt like: ‘ciscoasa>’, or ‘nameofyourdevice>’. Ensure that In-Service Software Upgrade (ISSU Dec 12, 2017 · After the factory reset process is complete, the router reboots to ROMMON mode. Router will end up in ROMMON mode. or. This method uses the config-register 0x2142 command in global configuration mode. iv. 05. If you do not know the password, just perform hard reboot. iii. bin to the flash and deleted the original ios thinking the new ios was just going to work. Then issue the command confreg 0x2102 Since the data deleted we realiced that we don't have any pack or license file for the router, what we want: 1- Change the admin password for the device. Hi, Our company recently acquired 2 x Cisco C8500-12X. Aug 17, 2007 · Using write erase will remove the startup-config and when the router boots it will have an empty config - and this is what used to be the factory default. Green led is always blinking. type ‘config factory-default’. 1 release. Insert flash. 152-1. Jan 4, 2018 · The factory reset commands are used to remove all the customer specific data on a router/switch that has been added. settings if pressed within five seconds of router power up". 01-31-2022 08:28 PM. 4. 06-22-2009 03:35 PM - edited 03-01-2019 03:49 PM. Apr 4, 2007 · Hi, If break is disabled, turn the router OFF ( wait few seconds ), turn the router ON. Aug 22, 2023 · To reset 6500/6000 switches which run Cisco IOS Software in redundant mode to factory defaults, you need to complete these steps: Erase the startup configuration with the erase startup-config command on the active Supervisor Engine. I would like to reset the password in order to be able of accessing the prvildge mode and config mode. Mar 7, 2022 · Type enable secret <password> to change the enable secret password, for example. TCC_2. Connect the power and turn on. This method uses the config-register 0x2102 command in global configuration mode. Power on the device, as soon as you see console output, use break key or cntr + c. Jun 9, 2022 · Options. Here is what I did: -Connected via console -Ctrl-Break to get to "Rommon 1>" prompt -Entered 'confreg 0x142' -Entered 'reset' -Entered save running-config. The router will boot from the USB. Readonly ROMMON initialized PASSWORD RECOVERY FUNCTIONALITY IS DISABLED Any guidanc Feb 11, 2020 · After the factory reset process is complete, the router reboots to ROMMON mode. *may new image name will differ. Solved: Hello, I have tried to reset a Cisco 2811 to factory defaults to no avail. Locate the reset button on the router. Reset router configuration to factory default. 990: %SYS-5-RELOAD: Reload requested by cisco on console. No Valid Cisco IOS Software Image in Flash. 2- Create a backup of any license file/data, apps. The factory reset process takes a backup of the boot image if the system is booted from an image stored locally (bootflash or harddisk). configuration and proceed y/n [n]: and simply replied "y". This may be helpful to some other user who has the same issue. This feature is introduced starting from IOS XE Fuji 16. here is the text from putty. Solved: i remembered before it's very easy to factory reset a switch such as 2960, just hold mode button 10 seconds restart. Oct 10, 2006 · Do you want to reset the router to factory default . reset. May 6, 2016 · Edit: Connect console cable directly with laptop and VG350 then perform below steps for recovery of password. Type config-register 0x2102, or the value you recorded in step 2. use. The router remains in ROM monitor and does not boot the Cisco IOS software. However in your case I suspect that your version of factory default is the way that it came from the factory and that included a config that initiated SDM, supplied a default address for the Dec 8, 2023 · [confirm] The following will be deleted as a part of factory reset: 1: Crash info and logs 2: User data, startup and running configuration 3: All IOS images, including the current boot image 4: OBFL logs 5: User added rommon variables 6: Data on Field Replaceable Units(USB/SSD/SATA) The system will reload to perform factory reset. Locate where the DRAM is and gently remove it. Enter confreg 0x142 to reset the configuration register: rommon 2> confreg 0x142. Could nor find a default username and password and tried. 06. The router reboots, but ignores the saved configuration. Reload the router. I always do that to show to the students how to do to reset the startup-config. Unfortunately it wasn't fully configured yet So what i would like to know is if possible to perform hardware reset on it. HTH . boot usb1:isr4200-universalk9_ias. Sep 13, 2006 · If both routers are different but have a compatible PCMCIA Flash card filesystem, you can use the other router to load a Cisco IOS Software image into a Flash card, which you can then move to the router you try to recover. If you're sure that Hyperterm is setup right (i. 03-02-2016 02:56 PM. Hold the reset button for about 30 seconds until the Protocol over Ethernet (PoE) light comes on and then release the button. Overriding the ADMIN configuration in XR: Mar 30, 2011 · On the standby RP/RSP from the CONSOLE port hit the ESC key and type ‘ksh’ without quotes and hit ENTER. The process will vary slightly depending on the model of the router, but in general, the steps are as follows: 1. The problem in my case was that the router (Cisco 2650 Prerequisites for Performing a Factory Reset. 0; Enter the set DEFAULT_GATEWAY command to configure the default gateway for the switch to use to get to the TFTP server, as this example shows. The device reloads to perform factory reset which results in the switch entering the ROMMON mode. S1-std. Flow control: None. This is because you are changing the config-register of the SP and NOT the RP. Make sure to wear a non-static ground strip. Unable to factory reset ISR 900 series router (c921-4p) 05-28-2019 05:33 AM. From ROMmon mode, issue the confreg 0x2102 command, as shown: Factory reset on cisco 1811 - Cisco Community. Aside from a return materials authorization (RMA), the only other option is to swap flash single in-line memory modules (SIMMs) from another 4500 or 4700 router that has a valid boot image and a main Cisco IOS software. The first time this happend to me. Dec 15, 2023 · After the factory reset process is complete, the router reboots to ROMMON mode. - This guide can be used for Cisco 1941/K9 router series. Put the DRAM back. ii. Jan 23, 2019 · - power cycle the router - wait long enough to be sure that the router has been able to go through its boot process - change the emulator back to the normal speed - hopefully you will be in rommon. The router cycles its power Aug 2, 2019 · Command . Solved: Hello, I need help with a cisco IR809G LTE router. You must know how to copy the Cisco IOS® software image from a TFTP server to the router. set. com/discussion/11705241/cisco-1921-router-default-password-invalid),but i couldn't get Jan 23, 2008 · If both the main image and the boot image are corrupted or deleted, there is no easy way to recover the router. 255. I have followed more Cisco documents that explain the procedure to restore the default factory configuration, but none of them works. Mar 30, 2011 · And issue 'sync', this will make the change persistent in the rommon config vars. Press and hold the reset button. Use a non-static cloth and wipe the contacts clean. Solved: Hello, I bought Cisco 1921, but I don't know password to this router. Now upon boot, I get the rommon> prompt and I Aug 4, 2021 · The device reloads to perform the factory reset that results in the router entering the ROMMON mode. If you issue a show ip interface brief command, every interface that you want to use should display up up. My 2800 series router don't boot now on rommon mode. The factory reset commands are used to remove all the customer specific data on a router/switch that has been added. Mar 7, 2019 · Options. connect console cable. When I turn on the Router it gives me some errors and messages, I tried to to go to ROMmon mode by pressing Ctrl + Break but it prompts me to Factory Reset and even the factory reset does not work saying it could not boot the image. Wait for the flash initializing message to appear as shown: done Initializing Flash. Core Issue. See the “Checking the Current ROMmon Version” section on page 5-2 for information about interpreting the output of the command that you run. To solve this problem, you should change the value of the configuration register as shown below: So, if your router is stuck in ROMmon mode, you should know the value of your configuration register, based on which you can determine the router behavior and eventually solve the problem. Important If the current boot image is a remote image or is stored in a USB or a NIM-SSD, ensure that you take a backup of the image before starting the factory reset process. rommon> sync . 155-2. See the boot command in the “Command Descriptions” section in this appendix. Solved: why my router 4331 reset after restarting Nov 12, 2020 · 11-12-2020 11:55 AM. type ‘config t’. S. type ‘ena’ to go to enable mode. Jun 12, 2020 · 101 4. For most Cisco models, this button is located on the back of the router. 01. - In ROMMO Nov 15, 2021 · Break key, ctrl + b, ESC or anything else to send break didn't work. Initialize the router by entering the reset command: rommon 2> reset. you see ROMMON1 >. There are many different instructions out there on how long to hold the reset pin and when and so on and so forth. Dec 16, 2023 · From Cisco IOS XE Dublin 17. A Cisco router is stuck in ROMmon mode. . I first tried to remove the flashcompact when booting in other to access the rommon mode and go on the set up process. Power up the router. i. bin. confirm it by accessing another Cisco Box console port)8 N 1 no flow control, then you may have corrupt ROM issues. Once you are done with this config register modification you can Dec 2, 2022 · Insert flash. Step 2. Issue 'i' or 'reset' and when the rsp is booting up, it should ignore the config file, since there's no config file found on /harddisk: called no-config . Jun 12, 2023 · Do you want to reset the router to the factory default configuration and proceed y/n [n]: Router continuing with existing configuration no valid BOOT image found Final autoboot attempt from default boot device Failed to find bootable image on device bootflash:. Risks: If a router is configured with no service password-recovery, this disables all access to the ROMMON. I am using console cable to directly access the router. The router is booting an IOS with IP Base feature set. ********* Notice ********* - The process is done on real equipment Cisco router ISR 4331/K9. To use the ROM monitor, you must be using a terminal or PC that is connected to the router over the console port. The bottom line is that without rommon 1 interaction, you have no method of forcing base maintenance actions. Yes, I know this is an old post, but using the info posted by Leo, and then got more details: Turn off and disconnect power. Mar 1, 2019 · For most purposes, the factory default setting of the configuration register is the most appropriate. configuration and proceed [y/n] ? y . This also erases the startup configuration on the standby Supervisor Engine. Jul 18, 2023 · Power down the router and remove the power cable (to minimize chances of self-inflicted electrocution). We can no longer access the device, since it asks for credentials. It's a file similar to this: isr4400-universalk9. Step 3. You also then need to press the BREAK key. Jun 18, 2009 · no service password-recovery command has been configured on my router, so the break sequence will no longer work in order to get to ROM Monitor (ROMmon) mode to perform a password recovery. The terminal should display: rommon 2>. Feb 7, 2007 · I'll have to mull this a bit. Jan 29, 2006 · Download using the Boot Image and a Trivial File Transfer Protocol (TFTP) Server. If this fails get the standby RP/RSP into ROMMON. 6 or Later. This will erase all current configurations. This allows you to boot your router, but does not install a valid Cisco IOS Software image in Flash. 06-09-202204:06 AM. Click Yes to continue. after resetting I copied running config to start. 3- Reset the device to default. Oct 19, 2021 · Hello, I have used Cisco 1921, and we forgot its login and password. Apr 13, 2019 · Hard reboot the router and press BREAK key continues until you will not get into the rommon mode. 4) Enter "confreg 0x2142". 1. 247. x release and later, you can use the factory-reset all secure command to reset the router and securely clear the files stored in the bootflash memory. How to Reset a Cisco Router Using the Reset Button. Enter your password if prompted. As long as the configuration value is 0x0, you must manually boot the operating system from the console. - Jan 16, 2007 · Stop bits: 1. This step bypasses the startup configuration where the passwords are stored. bandi and Leo Laohoo for their support and advice. Usually when the emulator is running at such low speed the signal that it is sending looks like a break signal to the router. 7. Where I made the mistake was I copied c3900e-universalk9-mz. You typically use Break during boot (Break is available in Special Commands menu in Putty by clicking on the Icon in the top left corner of the Putty window) to put the Router in ROMMON mode so you can change the config register. 2. Software and Hardware Support . 7) Enter "copy startup-config running-config". Feb 5, 2014 · The router is now reset to the original factory defaults. You may need either login and reset the router to default or switch on the router so that you can break into rommon prompt. Continue holding the reset button until after it gets to [OK] and gave some Invalid Input errors. rommon> reset. Hello, I wish to reset my 2911 router. Dec 23, 2020 · here is the steps : 1. rommon> i . Enter the config-register 0x2142 command in global configuration mode. Login with a local username and password. Method 2. Without a valid Cisco IOS Software image in Flash, you have four different options: Booting from a TFTP server. bin disk0: I found another procedure to enter rommon mode if the break sequence does not work: If unable to break into ROMMON mode, perform these steps: Remove flash. Feb 23, 2021 · To reset some Cisco routers and switches, you need to enter ROMMON mode. These are three ways the router can enter ROM Monitor (ROMmon) mode (rommon#>): Reload, initialize, or power cycle the router with the configuration register boot field set to 0. From the router that works, copy the image into the PCMCIA card. Enters privileged EXEC mode. Break router into ROMMON mode with break sequence while you boot Jan 30, 2006 · To recover a router from ROMmon mode, the router should be physically accessible and should have a terminal connected to the console port. Dec 18, 2007 · There is a valid Cisco IOS Software image in Flash. (Configure the terminal to operate at 9600 baud, 8 data bits, no parity, and 1 stop bit (9600 8N1). Since the 1000 Series Router has its boot image in ROM, it cannot be corrupted and is always available. Il existe deux méthodes principales pour reconfigurer un routeur Cisco avec ses paramètres d'usine initiaux. Oct 9, 2017 · Upgrading the ROMmon for a Router. Router 2811 access rommon. e. See How To Upgrade from ROMmon Using the Boot Image for the detailed instructions. If you have a copy of the config try below steps: ESS 2020 Factory Reset and Password Recovery. (Optional) Run the show platform command or the show rom-monitor slot command on the router to see the current release numbers of ROMmon on the hardware. Ensure that all the software images, including the current image, configurations, and personal data are backed up before you begin the factory reset process. The reset button itself is under the same screwed down plat that covers the mini-USB console port. Cisco router is now factory default reset. Wrong IOS image on ADVANCED K9 Router. PASSWORD RECOVERY IS DISABLED. The configuration register setting is displayed in the last line of the show version command output and must be set to 0x2102. 2) Turn it back on. thanks. not sure what you want after that your choice. cisco. Issue the no shutdown command on every interface that is used. If you don’t have a break key (you may be on laptop) you can send a break key through Putty, Click the Before factory reset process is started, if the configuration register on the router is set to manually boot from ROMMON, then after factory reset the router will stop at ROMMON. Mar 29, 2019 · The device reloads to perform factory reset which results in the switch entering the ROMMON mode. You will need a paperclip or similar to press the. The system is locked, meaning it's set to go immediately to username and password before doing anything else after boot up. Jun 22, 2009 · 5. You are in privileged EXEC mode when the prompt changes to a "# " from the "> "; for example,Router> to Router# . To change the configuration register to this setting, issue the configuration-register 0x2102 command, as shown: Router(config)# config-register 0x2102. - In ROMMON, you can't use "tab" to auto-complete the command. 10 rommon 8> set IP_SUBNET_MASK=255. 3. Can you post the complete output to the following ROMMON commands: 1. No answer to ctrl-brake or any key, and appears "differents blocks" (picture) to decompression blocks. Greetings, I have a new cisco 1811 that I have perfomed a factory reset on. For both occasions, I am getting the below message and there is no prompt comes up. Jan 31, 2024 · Using the factory reset Commands. Aug 31, 2018 · I was buy brand new router and have connected him to console port but when i need to hit enter after I get message press enter . Nov 20, 2017 · The ADSL cable that you connect to the Cisco router must be 10BASE-T Category 5, unshielded twisted-pair (UTP) cable. . I have tried many times but my old config keeps loading. @Buha_ZZ wrote: Booting flash:/c860vae-ipbasek9-mz. Apr 17, 2019 · However, before the factory reset process started, if the configuration register was set to manually boot from ROMMON, the router stops at ROMMON. Nov 15, 2018 · Can some one help me my router got stuck in rommon mode. During router boot-up process I am using special command > Break to force rommode , router shows " Readonly ROMMON initialized program load complete, entry p The Restore Factory Defaults page opens: Step 2. Jan 22, 2017 · Step 1: Reload router. Hi. Downloading the image via TFTP. After the reboot is completed, login with the default credentials. To reset the device, click the Default button. 124-10. Now load Image in the USB drive (fat format and maximum 4Gb in size). 6 and later, power off the device and simultaneously press the reset button while you apply power to the device. I was wondering if there is a work around for this like if the reset button is inside the dev. Step 4. Jan 11, 2013 · 3)hit ctrl+break until you are in rommon mode Type confreg 0x2142 at the rommon 1> prompt in order to boot from Flash. 6) An empty router will come up. A confirmation window appears. Perform standard procedure for password recovery. Apr 27, 2021 · PASSWORD RECOVERY IS DISABLED. 11. Comment . This causes the router to ignore the start-up configuration on the next reload. Software and Hardware Support for Factory Reset Jul 13, 2006 · The sup720 have two processors, the switch processor (sp) and the route processor (rp). rommon 1 > confreg Configuration Summary (Virtual Configuration Register: 0xc400) enabled are: diagnostic mode use net in IP bcast address use all zero broadcast b Dec 11, 2017 · Method 2. The router should give you about 60 seconds to do this after power-on. ***** Notice ***** - The process is done on real equipment Cisco router 1921/K9. 5) Enter "reset". Type config-register <configuration_register_setting>. Nov 21, 2023 · This step bypasses the startup configuration where the passwords are stored. Info for factory reset. *Jan 22 06:36:23. Unplug and plug the power cord from the switch. In some cases, the internal bootflash file system does not recognized by router: rommon 8 > dir bootflash: Reset before you continue: rommon 9 > reset Solution. The factory-reset all command erases the bootflash, nvram, rommon variables, licenses, and logs. Issue the show version command to check the configuration register on the router. Aug 27, 2015 · Solved: hello all- i have a cisco 2811 i dont know the password that was set previously i was able to reset the router password, and gained access to it, but how do I reset the password on the service module? Any assistance would be appreciated it. After a factory reset, the device clears all its environment variables including the MAC_ADDRESS and the SERIAL_NUMBER which are required to locate and load the software. My project manager swears it is brand new but is asking for a username and password in the USB console. rq kd lp mh nr xs ho qw qt vb