cisco 2921 router password recovery

If the switch login password is forgotten, don't worry, as long as you have a PC, there are similar HyperTerminal (Hyper Terminal) This is a terminal program, connected to the switch console port, then the password recovery is n simple. 1. For the Catalyst 2900/3500XL series: Disconnect the power cable from the switch, and then press and hold the switch mode bu

1. Use HyperTerminal to connect to the router, restart the router, press Ctrl+break to enter ROM monitor mode note: Configuration register (2B) sixth bit controls whether to read the configuration file in NVRAM2. Modify Configuration Register: 2600 series: 1): Confret 0x2142 Configuration Register value 2): Reset 3): I reboot into privileged mode2500 Series: 1): O interrupt 2): O/R 0x2142 Configuration Regi

1, hold down the switch front panel to the left of the mode key, and then turn on the switch power. 2, enter the boot mode, input "Flash_init", the initialization of Flash information: Switch:flash_init [3], enter the "load_helper" command: Switch:load_helper (Some model switches do not need to execute this command.) Check to see if the information prompts for "Load_helper" after entering boot mode. If you have, you need to enter. No input is required. ) Example: Informational hints are di

> O // display the register valueConfiguration register = 0x2142 at last bootBit # Configuration register option settings:15 Diagnostic mode disabled14 IP broadcasts do not have network numbers13 Boot default ROM software if network boot fails12-11 Console speed is 9600 baud10 IP broadcasts with ones08 Break disabled07 OEM disabled06 Ignore configuration enabled03-00 Boot file is cisco2-2500 (or 'boot system' command)> O/r 0x2142 // modify the register value> I // restart the routerWhen you ente

Huawei Router Password recovery 1 Reset 2 ctrl+b, enter the router download interface (Boot menu interface) 3 Enter bootrom password, default is empty Enter the boot menu interface, There are 5 options: 1 Download application program 2 download bootrom program

In modern office life more and more people make wireless network, but a lot of people's wireless network security do not do enough, often encounter wireless network password is stolen situation, that is, we often say that the rub net, there are many malicious people even the wireless router password will be modified, then we should do? One, in addition to a few

For all enterprises to build their own internal LAN is bound to use the routing switch equipment, and routers are applied to network access, the need for external network by the occasion, so the router for the normal operation of the enterprise network plays a very important role, However, for our network administrators may encounter the router password forgotten