Symptoms

NOTE: This process needs a console connection and includes a reboot. Hence it is advised to schedule appropriate downtime prior to performing the password recovery. NOTE: When the switch is in a stack of PC6200, power off all the members except the primary and proceed with following the procedure on the primary switch. After the primary switch is recovered, power on the members one by one. ALERT: For this reason your Switch you be in a properly secured network closet or data center to stop physical access.

Cause

Step 1 Access the switch by using the Connect an RS-232 crossover console cable.Use these settings:Set the data rate to 9600 baud.Set the data format to 8 data bits, 1 stop bit, and no parity.Set the flow control to none. Step 2 Power cycle the switch by removing and then plugging the power cord into the power supply Step 3 Start Boot Menu. Press 2 within ten seconds after the following message displays to access the Boot menu. 1 - Start operational code.2 - Start Boot Menu. Select (1, 2): Step 4 Select Password Recovery Procedure. The Boot menu displays the following options. Select 12 and press 1 - Start operational code2 - Change baud rate3 - Retrieve event log using XMODEM4 - Load new operational code using XMODEM5 - Display operational code vital product data6 - Abort boot code update7 - Update boot code8 - Delete backup image9 - Reset the system10 - Restore configuration to factory defaults (delete config files)11 - Activate Backup Image12 - Password Recovery Procedure13 - Reformat and restore file system[Boot Menu] Switch will continue to boot Step 6 After the switch has booted you can configure a new login password.Use below commands to configure a new username and password. Ensure the configuration is saved after we configure the password. Command Syntax Command Parameters console#configure Enter configuration mode console(config)# username password level 15 From configure terminal, configure the new username, password and privilege level console(config)# exit Exit configure mode console# copy running-config startup-config Save running configuration to backup configuration

Resolution

Sample Output iptor ptr (pVolDesc): 0x3903150XBD device block I/O handle: 0x10001auto disk check on mount: DOS_CHK_REPAIR |DOS_CHK_VERB_2volume write mode: copyback (DOS_WRITE)max # of simultaneously open files: 52file descriptors in use: 0# of different files in use: 0# of descriptors for deleted files: 0# of obsolete descriptors: 0 current volume configuration: - volume label: NO LABEL ; (in boot sector: ) - volume Id: 0xda - total number of sectors: 60,716 - bytes per sector: 512 - # of sectors per cluster: 4 - # of reserved sectors: 1 - FAT entry size: FAT16 - # of sectors per FAT copy: 60 - # of FAT table copies: 2 - # of hidden sectors: 4 - first cluster is in sector # 136 - Update last access date for open-read-close = FALSE - directory structure:VFAT - file name format:8-bit (extended-ASCII) - root dir start sector:121 - # of sectors per root:15 - max # of entries in root:240 FAT handler information:------------------------ - allocation group size:2 clusters - free space on volume:1,617,920 bytes 1 - Start operational code.2 - Start Boot Menu. Select (1, 2):2 ======================>Select Option 2 Boot Menu 3.3.7.3 Options available1 - Start operational code2 - Change baud rate3 - Retrieve event log using XMODEM4 - Load new operational code using XMODEM5 - Display operational code vital product data6 - Abort boot code update7 - Update boot code8 - Delete backup image9 - Reset the system10 - Restore configuration to factory defaults (delete config files)11 - Activate Backup Image12 - Password Recovery Procedure13 - Reformat and restore file system [Boot Menu] 12 ==============>Select Option 12 Operational Code Date: Tue Oct 31 12:38:09 2017 Uncompressing..... ///////////////////////////////////////////////////////////////////////////////////////////////Boot session logs omitted for brevity/////////////////////////////////////////////////////////////////////////////////////////////// (Unit 1 - Waiting to select management unit)> Applying Global configuration, please wait ... console>

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