Resetear Switch

Introduction

This document describes the password recovery procedure for the Cisco Catalyst Layer 2 fixed configuration switches 2900XL/3500XL, 2940, 2950/2955, 2960, and 2970 Series, as well as the Cisco Catalyst Layer 3 fixed configuration switches 3550, 3560, and 3750 Series.
Before You Begin
Conventions

For more information on document conventions, see the Cisco Technical TipsConventions.
Prerequisites

There are no specific prerequisites for this document.
Step-by-Step Procedure

Follow the password recovery procedure below.

Attach a terminal or PC with terminal emulation (for example, Hyper Terminal) to the console port of the switch.

Use the following terminal settings:

Bits per second (baud): 9600

Data bits: 8

Parity:None

Stop bits: 1

Flow Control: Xon/Xoff

Note: For additional information on cabling and connecting a terminal to the console port, refer to Connecting a Terminal to the Console Port on Catalyst Switches.

Unplug the power cable.

Power the switch and bring it to the switch: prompt:

For 2900XL, 3500XL, 2940, 2950, 2960, 2970, 3550, 3560, and 3750series switches, do this:

Hold down the mode button located on the left side of the front panel, while you reconnect the power cable to the switch.
Catalyst Switch Series LED Behavior and Mode Button Release Action
2900XL, 3500XL, 3550 Release the Mode button when the LED above Port1x goes out.
2940, 2950 Release the Mode button after approximately 5 seconds when the Status(STAT) LED goes out. When you release the Mode button, the SYST LED blinks amber.
2960, 2970 Release the Mode button when the SYST LED blinks amber and then turns solid green. When you release the Mode button, the SYST LED blinks green.
3560, 3750 Release the Mode button after approximately 15 seconds when the SYST LED turns solid green. When you release the Mode button, the SYST LEDblinks green.

Note: LED position may vary slightly depending on the model.

Catalyst 3524XL

pswdrec_2900xl_1.gif

Catalyst 2950-24

pswdrec_2900xl_2.gif

For 2955 series switches only:

The Catalyst 2955 series switches do not use an external mode button for password recovery. Instead the switch boot loader uses the break-key detection to stop the automaticboot sequence for the password recovery purposes. The break sequence is determined by the terminal application and operating system used. Hyperterm running on Windows 2000 uses Ctrl + Break. On a workstation running UNIX, Ctrl-C is the break key. For more information, refer to Standard Break Key Sequence Combinations During Password Recovery.

The example below uses Hyperterm to break intoswitch: mode on a 2955.

C2955 Boot Loader (C2955-HBOOT-M) Version 12.1(0.0.514), CISCO DEVELOPMENT TEST
VERSION
Compiled Fri 13-Dec-02 17:38 by madison
WS-C2955T-12 starting...
Base ethernet MAC Address: 00:0b:be:b6:ee:00
Xmodem file system is available.
Initializing Flash...
flashfs[0]: 19 files, 2 directoriesflashfs[0]: 0 orphaned files, 0 orphaned directories
flashfs[0]: Total bytes: 7741440
flashfs[0]: Bytes used: 4510720
flashfs[0]: Bytes available: 3230720
flashfs[0]: flashfs fsck took 7 seconds.
...done initializing flash.
Boot Sector Filesystem (bs:) installed, fsid: 3
Parameter Block Filesystem (pb:) installed, fsid: 4

***The system will autoboot in 15 seconds ***
Send break character to prevent autobooting.


!--- Wait until you see this message before
!--- you issue the break sequence.
!--- Ctrl+Break is entered using Hyperterm.


The system has been interrupted prior to initializing the flash file system to finish
loading the operating system software:...