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registration code so that the router can skip the configuration table in NVRAM and directly enter the ROM mode, modify the valid password and terminal password, or reset the valid Password (because the valid password is garbled and cannot be restored, you can only rewrite it ), then, the registration code is restored.
for 12 s until the router is started, and then change the default value of the Super Terminal bit, the communication baud rate is set to 9600, the data bit is 8, the parity bit is 1, and the stop bit is 1. After the connection is reconnected, you can see from the terminal that it is in the ROM status. Note: When the baud rate is 1200, NO content is displayed on the terminal. This method is applicable to vrouters 2500, 2600, And 4500.
8 conclusion
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When a Cisco router forgets or loses the enable password, there are two methods to restore it, depending on the series of products you are using.
Method 1
You can use this method to restore the following vrouters: cisco 2000 Series, 2500 series, 3000 series, Cisco 680 series with 4000x0 Motorola CPU, and 10.0 series r
configuration?" VALUE; At thatprompt, enter Y.Step 8 Reload The security appliance by entering the following command:Rommon #2 > BootThe security appliance loads a default configuration instead of the startup configuration.Step 9 Enter Privileged EXEC mode by entering the following command:Hostname> EnableStep Ten when prompted for the password, press Return.The passwo
This utility
When a Cisco router forgets or loses the enable password, there are two methods to restore it, depending on the series of products you are using.
Method 1
You can use this method to restore the following vrouters: cisco 2000 Series, 2500 series, 3000 series, Cisco 680 series with 4000x0 a6l a CPU, and 10.0
When a Cisco router forgets or loses the enable password, there are two ways to recover, depending on which series of routers you are using.
The first of these methods
This approach restores the following routers: Cisco 2000 series, 2500 series, 3000 series, Cisco 4000 series using the 680x0 Motorola CPU, and 10.0 se
The first of these methods
This approach restores the following routers: Cisco 2000 series, 2500 series, 3000 series, Cisco 4000 series using the 680x0 Motorola CPU, and 10.0 series routers running 7000 versions of Cisco IOS systems.
Implementation steps:
1. Connect a terminal at the console port of the router or a PC with the emulation terminal software insta
Ciscoswitch password reset steps1.PCMachine has Breakmethod of the key1.1Interrupt Device startup Ctrl+break keyStep: Turn off the device and restart:Self decompressing the image: Press the Ctrl+break key when you start the device ##########################Monitor:command "Boot" aborted due to user interrupt1.2change the value of the configuration register to 0x2142(Two register values:0x2102 (Normal),0x2142 (do not read the saved configuration))s
When a Cisco router forgets or loses the enable password, there are two ways to recover, depending on which series of routers you are using.
The first of these methods
This approach restores the following routers: Cisco 2000 series, 2500 series, 3000 series, Cisco 4000 series using the 680x0 Motorola CPU, and 10.0 se
1. Password Recovery Principle
1) The Cisco router stores several different configuration parameters and stores them in different memory modules. The memory of Cisco Series routers includes ROM, Flash memory, RAM, immutable RAM, and Dynamic memory DRAM. See table 1 ). Generally, when a vrodram starts, it first runs the program in ROM, conducts system self-check
Router Password recovery:Preparation: A PC is connected to a router with a console line How it works: Fix the Register value if the forgotten password is locked outside the routerThe default register value is 0x2102 (off), and to restore the password you need to turn this value on to tell the router to ignore the conte
1. CISCO's most basic experiment and password settingsGlobal passwordR1 # configure terminalR1 (config) # enable password XXXXConsole Logon password:Router # config terminalRouter (config) # line console 0Router (config-line) # exec-timeout 0 0 // set the console timeout value to zero, that is, never time out. The default value is 10 minutes.Router (config-line)
values
0x2142: Starting from flash, but not using the configuration file in NVRAM (for password recovery)
0X2101: Booting from boot RAM, applied to update system files
0x2141: Starting from boot RAM, but not using the configuration file in NVRAM
Where the third digit of the C bit is 1, the break key is turned off, whereas the break key is turned on.
0x141: Closes the break key, does not use the configuration file in Nvram, and starts from a syst
Cisco router is one of the widely used computer network communication devices. In daily operation, the router plays an important role in the whole system, and it is unavoidable to operate it frequently. For example:
Modify router configuration files, diagnose network failures, and so on. Once the password is forgotten, it can cause great trouble to the job, at this point, how to recover the
the input error and other operational effects, you can copy the above command into a txt text file, and paste it in the Operation console interface when used. (This does not understand, do not know how to operate)3. Cisco IOS Switch Password recoveryCisco iOS switches are more complex than the CatOS switch password recovery, even more than a router's
Tags: cisco switch password resetCisco switch, what do we do when we forget its login password? How do I clear its password? principle: Enter the bottom of the switch, by modifying the switch original profile name, after restarting the switch, the switch cannot find the original configuration file, it will load the
Lab Environment:The company has a Cisco switch that forgets the login password and cannot enter into privileged mode.Implementation features:To modify the login password in privileged mode1, desktop----start----All Programs----attachments----hyperterminal----files----New Connection---CustomThe name test----OK.2. The COM1 (depending on the actual situation) used i
1. Unplug the power cord of the vswitch, press the switch Mode button, and re-plug the power cord of the vswitch. Release the Mode button after the LEDs on Port 1x are off.
2. For the Catalyst 2940/2950 L series:
Unplug the power cord of the switch, hold down the Mode button of the switch, and re-plug the power cord of the switch. Release the Mode button after the stat led is off.
3. For the Catalyst 2955 series:
There is no external Mode button in Catalyst 2955, so you cannot use the previous m
To emulate the password of the reset router with the Cisco Packet Tracer Simulator, the packet tracer default router port is off and needs to be manually enabled 650) this.width=650; "Src=" http://s3.51cto.com/ Wyfs02/m01/5a/21/wkiol1t3xxiqjwmeaakcapd2ghs648.jpg "title=" 2.png "alt=" Wkiol1t3xxiqjwmeaakcapd2ghs648.jpg "/>1. Shut down the router and restart! See #
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