Incomplete boot of 806 router

Discussion in 'Cisco' started by David Arnstein, Dec 19, 2003.

  1. I have a little Cisco 806 router. Recently, it has developed a
    problem. If it abruptly loses power (power fail) then there is a good
    chance that it will fail to completely boot up after power is restored
    to it.

    When I connect a terminal to its RS232 port, I see the following
    prompt:
    rommon 1 >
    If I type
    boot
    at this prompt, the router will successfully boot itself up and give
    service.

    What should I do about it? Thanks for any ideas.
    --
    David Arnstein Please do not look at laser with remaining eye
    David Arnstein, Dec 19, 2003
    #1
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  2. David Arnstein

    Kirk Goins Guest

    Once it's up do a sh ver. What is the config reg set to?

    David Arnstein wrote:
    > I have a little Cisco 806 router. Recently, it has developed a
    > problem. If it abruptly loses power (power fail) then there is a good
    > chance that it will fail to completely boot up after power is restored
    > to it.
    >
    > When I connect a terminal to its RS232 port, I see the following
    > prompt:
    > rommon 1 >
    > If I type
    > boot
    > at this prompt, the router will successfully boot itself up and give
    > service.
    >
    > What should I do about it? Thanks for any ideas.
    Kirk Goins, Dec 19, 2003
    #2
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  3. In article <>,
    Kirk Goins <> wrote:
    >Once it's up do a sh ver. What is the config reg set to?


    Cisco Internetwork Operating System Software
    IOS (tm) C806 Software (C806-O3SY6-M), Version 12.2(13)ZH, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
    Synched to technology version 12.2(14.5)T
    TAC Support: http://www.cisco.com/tac
    Copyright (c) 1986-2003 by cisco Systems, Inc.
    Compiled Thu 24-Apr-03 19:29 by ealyon
    Image text-base: 0x800131E8, data-base: 0x8092E46C

    ROM: System Bootstrap, Version 12.2(4r)XM3, RELEASE SOFTWARE (fc1)
    ROM: C806 Software (C806-O3SY6-M), Version 12.2(13)ZH, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

    OwlX uptime is 13 hours, 48 minutes
    System returned to ROM by power-on
    System restarted at 08:42:50 PT Fri Dec 19 2003
    System image file is "flash:c806-o3sy6-mz.122-13.ZH.bin"

    CISCO C806 (MPC855T) processor (revision 0x501) with 30720K/2048K bytes of memory.
    Processor board ID VMS0640052K (948158724), with hardware revision 0000
    CPU rev number 0
    Bridging software.
    2 Ethernet/IEEE 802.3 interface(s)
    128K bytes of non-volatile configuration memory.
    8192K bytes of processor board System flash (Read/Write)
    2048K bytes of processor board Web flash (Read/Write)

    Configuration register is 0x2101
    --
    David Arnstein Please do not look at laser with remaining eye
    David Arnstein, Dec 20, 2003
    #3
  4. David Arnstein

    Kirk Goins Guest

    Mine is set to 2102. Get into global cfg mode (conf t), then do a
    config-reg 0x2102 and enter. I don't remember if you need to save it by
    doing a "copy run start" but I would do it anyway. Make sure no one is
    using the router and do a reload and see what happens.

    David Arnstein wrote:
    > In article <>,
    > Kirk Goins <> wrote:
    >
    >>Once it's up do a sh ver. What is the config reg set to?

    >
    >
    > Cisco Internetwork Operating System Software
    > IOS (tm) C806 Software (C806-O3SY6-M), Version 12.2(13)ZH, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
    > Synched to technology version 12.2(14.5)T
    > TAC Support: http://www.cisco.com/tac
    > Copyright (c) 1986-2003 by cisco Systems, Inc.
    > Compiled Thu 24-Apr-03 19:29 by ealyon
    > Image text-base: 0x800131E8, data-base: 0x8092E46C
    >
    > ROM: System Bootstrap, Version 12.2(4r)XM3, RELEASE SOFTWARE (fc1)
    > ROM: C806 Software (C806-O3SY6-M), Version 12.2(13)ZH, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
    >
    > OwlX uptime is 13 hours, 48 minutes
    > System returned to ROM by power-on
    > System restarted at 08:42:50 PT Fri Dec 19 2003
    > System image file is "flash:c806-o3sy6-mz.122-13.ZH.bin"
    >
    > CISCO C806 (MPC855T) processor (revision 0x501) with 30720K/2048K bytes of memory.
    > Processor board ID VMS0640052K (948158724), with hardware revision 0000
    > CPU rev number 0
    > Bridging software.
    > 2 Ethernet/IEEE 802.3 interface(s)
    > 128K bytes of non-volatile configuration memory.
    > 8192K bytes of processor board System flash (Read/Write)
    > 2048K bytes of processor board Web flash (Read/Write)
    >
    > Configuration register is 0x2101
    Kirk Goins, Dec 20, 2003
    #4
  5. In article <>,
    Kirk Goins <> wrote:
    >Mine is set to 2102. Get into global cfg mode (conf t), then do a
    >config-reg 0x2102 and enter. I don't remember if you need to save it by
    >doing a "copy run start" but I would do it anyway. Make sure no one is
    >using the router and do a reload and see what happens.


    Thanks Kirk. I find it strange that the configuration register can
    change all by itself. I certainly didn't do it. Perhaps a power
    failure can corrupt NVRAM? Has anyone else experienced this?
    --
    David Arnstein Please do not look at laser with remaining eye
    David Arnstein, Dec 20, 2003
    #5
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