Cisco ISR4300, user credential is not working and password recovery disabled, How to recover the access to the router

Cisco 4331, user credential is not working and password recovery disabled

Step by step solution to recover the access to the router

First, make sure you have a configuration backup because this following step will erase all the config

Console to the router, using Terra Term

Power cycle

System Bootstrap, Version 11.1(4675) [kluk 143], INTERIM SOFTWARE
Copyright (c) 1994-1996 by cisco Systems, Inc.
C3600 processor with 32768 Kbytes of main memory
Main memory is configured to 64 bit mode with parity disabled

PASSWORD RECOVERY FUNCTIONALITY IS DISABLED
program load complete, entry point: 0x80008000, size: 0x2733f4

When I see the word "Password Recovery Functionality is Disabled"

Send CTRL Break

It will prompt a question to Reset to factory default

PASSWORD RECOVERY IS DISABLED.

Do you want to reset the router to factory default

configuration and proceed [y/n] ? y

Reset router configuration to factory default.

It should boot to router prompt

Now, you can re-configure it again

Comments

Recovering Fabric Interconnects When You Do Not Have Working Images on The Fabric Interconnect or The Bootflash

Recovering Fabric Interconnects When You Do Not Have Working Images on The Fabric Interconnect or The Bootflash You can perform these steps when both or any fabric interconnect goes down during firmware upgrade, gets rebooted, and is stuck at the loader prompt, and you do not have working images on the fabric interconnect. Procedure Step 1 Reboot the switch, and in the console, press Ctrl+L as it boots to get the loader prompt. Note You may need to press the selected key combination multiple times before your screen displays the loader prompt. Example: loader> Step 2 Configure the interface to receive the kickstart image through TFTP. Enter the local IP address and subnet mask for the system at the loader> prompt, and press Enter . Example: loader> set ip 10.104.105.136 255.255.255.0 Specify the IP address of the default gateway. Example: loader> set gw 10.104.105.1 Boot the kickstart image file from the required server. Example...

Upgrade Software On A Cisco Catalyst 3850 Series Switch Stack

Upgrade Software On A Cisco Catalyst 3850 Series Switch Stack Set a new SW#1 as stand alone copy bin file using usb copy usbflash0:xxxxx.bin flash: New-SW01#request platform software package install switch all file flash:cat3k_caa-universalk9ldpe .16 .03 .08 .SPA.bin new auto-copy New-SW01#reload New-SW01# request platform software package clean connect the stack cable

Upgrading an Old Nexus 3048 to Current NX-OS Posted on 2018/11/16 Yeah, I know. I’m supposed to be a Wi-Fi guy. However, I sometimes still have to touch routers and switches. I have some help for you if you need to upgrade some old Nexus switches. The Nexus 3048s are great DC caliber gig switches with proper front-to-back airflow. Used ones are really cheap and I think they make great management switches, which is what I’m using them for. If you have a Cisco Nexus 3048 with an older release of NX-OS on it, you need to go through several upgrades to get it to NX-OS v7. Here’s a walkthrough on the procedures. If you find you already on v6, for example, you can skip the 5.x step. Upon initial boot, you will need to abort Power-On Auto Provisioning. You will then be prompted for the admin password. Skip the basic configuration dialog. After a few moments, you will be able to login with the admin credentials you set during boot. I suggest downloading all the requ...

Cisco Problem and Solution

Search This Blog