One of Cisco 4507R-E switch got a continuous reboot problem. It just got super engine replaced in the slot 3. During power on process, the console screen shows a rebooting cycle with the following output.The related posts in this blog:
- Recover Cisco Device using TFTP Server or External Card from a Corrupt or Missing Image or in Rommon Mode
- Recover Cisco 4507 Switch from a Continuous Reboot
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 *                             *  * Welcome to Rom Monitor for WS-X45-SUP6-E System.    *  * Copyright (c) 2003-2009 by Cisco Systems, Inc.     *  * All rights reserved.                  *  *                             *  ********************************************************** Flash die # 0: AMD 67108864Bytes Flash die # 1: AMD 67108864Bytes Determining FTL format status of volume. Volume is FTL formatted. Checking the partition table and boot sector... Checking FAT, Files and Directories... Reclaiming unused space... Updating FAT...  Rom Monitor Program Version 12.2(44r)SG5  CPU Rev: 2.0, Board Rev: 6, Board Type: 10, CPLD Jawa Rev: 18  Chassis: WS-C4507R-E Front Panel Phy is Bcm5482s Got Mac Address: 00:25:84:1e:0d:8f  MAC Address  : 00-25-84-1e-0d-8f  Ip Address  : Not set.  Netmask    : Not set.  Gateway    : Not set.  TftpServer  : Not set.  ***** The system will autoboot in 5 seconds *****  Type control-C to prevent autobooting.  . . . . .  ******** The system will autoboot now ********  config-register = 0x2  Autobooting using BOOT variable specified file.....  Current BOOT file is --- bootflash:/cat4500e-entservices-mz.152-1.E3.bin  boot: can not load "bootflash:/cat4500e-entservices-mz.152-1.E3.bin"  The switch will automatically reboot now... |
It is obviously the reboot is caused by missing or corrupt image file. Also it may relate to an incorrect boot image is specified when setting up the boot variable, which prevents the booting of the system image.
The solution is pretty simple as well. Find out correct IOS file in system and set it as boot IOS.
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 *                             *  * Welcome to Rom Monitor for WS-X45-SUP6-E System.    *  * Copyright (c) 2003-2009 by Cisco Systems, Inc.     *  * All rights reserved.                  *  *                             *  ********************************************************** Flash die # 0: AMD 67108864Bytes Flash die # 1: AMD 67108864Bytes Determining FTL format status of volume. Volume is FTL formatted. Checking the partition table and boot sector... Checking FAT, Files and Directories... Reclaiming unused space... Updating FAT...  Rom Monitor Program Version 12.2(44r)SG5  CPU Rev: 2.0, Board Rev: 6, Board Type: 10, CPLD Jawa Rev: 18  Chassis: WS-C4507R-E Front Panel Phy is Bcm5482s Got Mac Address: 00:25:84:1e:0d:8f  MAC Address  : 00-25-84-1e-0d-8f  Ip Address  : Not set.  Netmask    : Not set.  Gateway    : Not set.  TftpServer  : Not set.  ***** The system will autoboot in 5 seconds *****  Type control-C to prevent autobooting.  . . . . .  Autoboot cancelled......... please wait!!! rommon 1 > [interrupt] rommon 2 >help  alias        set and display aliases command  boot        boot up an external process  clear        clear configurations, use 'clear help' for more info  confreg       configuration register utility  dev         list the device table with physical device information  dir         list filesystem information  help        monitor builtin command help  history       monitor command history  macstats      print management port MAC statistics counters  meminfo       main memory information  ping        ping utility to determine network connectivity  repeat       repeat a monitor command  reset        system reset  set         show/set environment vars, use 'set help' for more info  sprom        serial eprom operations  unalias       unset an alias  unset        unset a monitor variable  version       display Rom Monitor version information rommon 4 >dir  usage: dir { [ bootflash: ] | [ slot0: ] | [ usb0: ] } rommon 5 >dir bootflash:  File Size (Bytes)       File Name  ---------------------------------------    25443451         cat4500e-entservicesk9-mz.122-53.SG.bin   Total space = 131436544 bytes, Available = 98537472 bytes rommon 6 >boot bootflash:cat4500e-entservicesk9-mz.122-53.SG.bin |
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