Cisco Systems 520 series manual 12-10, Rommon 2 confreg

Chapter 12 Troubleshooting

Recovering a Lost Password

Cisco SR520W-ADSL (MPC8272) processor (revision 0x100) with 118784K/12288K bytes of memory.

Processor board ID FOC09171CB7

MPC8272 CPU Rev: Part Number 0xC, Mask Number 0x10 4 FastEthernet interfaces

1 ATM interface

1 802.11 Radio

128K bytes of non-volatile configuration memory.

20480K bytes of processor board System flash (Intel Strataflash)

Configuration register is 0x0

Step 4 Record the setting of the configuration register.

Step 5 To enable the break setting (indicated by the value of bit 8 in the configuration register), enter the config-register 0x01 command from privileged EXEC mode.

•Break enabled—Bit 8 is set to 0.

•Break disabled (default setting)—Bit 8 is set to 1.

Reset the Router

To reset the router, follow these steps:

Step 1 If break is enabled, go to Step 2. If break is disabled, turn the router off (O), wait 5 seconds, and turn it on () again. Within 60 seconds, press the Break key. The terminal displays the ROM monitor prompt. Go to Step 3.

Note Some terminal keyboards have a key labeled Break. If your keyboard does not have a Break key, see the documentation that came with the terminal for instructions on how to send a break.

Step 2 Press break. The terminal displays the following prompt:

rommon 2>

Step 3 Enter confreg 0x2142 to reset the configuration register:

rommon 2> confreg 0x2142

Step 4 Initialize the router by entering the reset command:

rommon 2> reset

The router cycles its power, and the configuration register is set to 0x2142. The router uses the boot ROM system image, indicated by the system configuration dialog:

--- System Configuration Dialog ---

Step 5 Enter no in response to the prompts until the following message is displayed:

Press RETURN to get started!

Step 6 Press Return. The following prompt appears:

Router>

	Cisco Secure Router 520 Series Software Configuration Guide
12-10	OL-14210-01