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Thread: DHCP failure

  1. #1
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    DHCP failure

    Here's the scenario..

    Account with about 30 KM MFPs. Due to unstable power to the building it's common for power to go out at least once per week. The issue here is their network switches take about 8-10 min to come to ready. The KMs are ready in 2 min, and have given up on getting a DHCP request after about 5 min which results is a APPIPA address being assigned (169.254.x.x). 5 min later the switch is up and ready, but the MFP is no longer sniffing about for a DHCP reservation. No printing or scanning is possible until someone walks the 5 floors and restarts power to each machine. They have been living with this for 3 years, and know it's not an issue with the KMs but in the bid for a refresh they have found that other vendors devices, and all the laptops and PCs are able to "try again". Soft switch 219 set to a 1 will force the machine to continue trying to get a response. Another tidbit not mentioned in the KM manuals..

  2. #2
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    Re: DHCP failure

    Why don't you set the machine to an fixed IP???

  3. #3
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    Re: DHCP failure

    Because the customer told us their switch will only hand out DHCP address. Static IPs are auto blocked. Typical government account..

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    Senior Tech 100+ Posts elmaligno's Avatar
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    Re: DHCP failure

    Quote Originally Posted by emujo2 View Post
    Here's the scenario..

    Account with about 30 KM MFPs. Due to unstable power to the building it's common for power to go out at least once per week. The issue here is their network switches take about 8-10 min to come to ready. The KMs are ready in 2 min, and have given up on getting a DHCP request after about 5 min which results is a APPIPA address being assigned (169.254.x.x). 5 min later the switch is up and ready, but the MFP is no longer sniffing about for a DHCP reservation. No printing or scanning is possible until someone walks the 5 floors and restarts power to each machine. They have been living with this for 3 years, and know it's not an issue with the KMs but in the bid for a refresh they have found that other vendors devices, and all the laptops and PCs are able to "try again". Soft switch 219 set to a 1 will force the machine to continue trying to get a response. Another tidbit not mentioned in the KM manuals..

    219 6 A function to enable "_"(underscore) to be used for the default DNS domain name. Disabled Enabled 0 INC000000016668 ERBAU_1900919203 DLKM_BT1932132EN
    DLKM_BT1932133EN
    DLKM_BT1932134EN
    DLKM_BT1932135EN
    DLKM_BT1932136EN
    DLKM_BT1932137EN
    DLKM_BT1932138EN
    DLKM_BT1932144EN
    DLKM_BT1932139EN
    DLKM_BT1932142EN
    DLKM_BT1932143EN
    DLKM_BT1932145EN
    A function to enable "_"(underscore) to be used for the default DNS domain name.

    DipSW No.219 (bit6)
    0x00: disable
    0x40: enable
    bizhub 367/287/227 (GC1-X4 or later)
    bizhub C368/C308/C258 (GC1-X4 or later)
    bizhub C287/C227 (GC1-X4 or later)
    bizhub 958/808/758 (GC1-X4 or later)
    bizhub C658/C558/C458 (GC1-X4 or later)
    bizhub 558/458/368/308 (GC1-X4 or later)
    bizhub C3851/C3851FS/C3351 (GC1-X4 or later)
    bizhub C759/C659 (GC1-X4 or later)
    bizhub 368e/308e (GC1-X4 or later)
    bizhub 658e/558e/458e (GC1-X4 or later)
    bizhub 4752/4052 (GC1-X4 or later)
    Field technician since 1994

  5. #5
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    DHCP failure

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    Re: DHCP failure


  6. #6
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    Re: DHCP failure

    Im looking at an I series manual. 219 is not listed in my 07/2023 version.

    Quote Originally Posted by elmaligno View Post

    219 6 A function to enable "_"(underscore) to be used for the default DNS domain name. Disabled Enabled 0 INC000000016668 ERBAU_1900919203 DLKM_BT1932132EN
    DLKM_BT1932133EN
    DLKM_BT1932134EN
    DLKM_BT1932135EN
    DLKM_BT1932136EN
    DLKM_BT1932137EN
    DLKM_BT1932138EN
    DLKM_BT1932144EN
    DLKM_BT1932139EN
    DLKM_BT1932142EN
    DLKM_BT1932143EN
    DLKM_BT1932145EN
    A function to enable "_"(underscore) to be used for the default DNS domain name.

    DipSW No.219 (bit6)
    0x00: disable
    0x40: enable
    bizhub 367/287/227 (GC1-X4 or later)
    bizhub C368/C308/C258 (GC1-X4 or later)
    bizhub C287/C227 (GC1-X4 or later)
    bizhub 958/808/758 (GC1-X4 or later)
    bizhub C658/C558/C458 (GC1-X4 or later)
    bizhub 558/458/368/308 (GC1-X4 or later)
    bizhub C3851/C3851FS/C3351 (GC1-X4 or later)
    bizhub C759/C659 (GC1-X4 or later)
    bizhub 368e/308e (GC1-X4 or later)
    bizhub 658e/558e/458e (GC1-X4 or later)
    bizhub 4752/4052 (GC1-X4 or later)

  7. #7
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    Re: DHCP failure

    Quote Originally Posted by emujo2 View Post
    Im looking at an I series manual. 219 is not listed in my 07/2023 version.
    Not all switches are listed in the manual, as nobody wants a 3000 page manual.

    Enabling DHCP retries if an IP address is not assigned by the DHCP server

    Article metadata. 6mo ago6 months ago
    This article has 3 views. 3 Views This article has average rating: 0 out of 5 stars ( ) ( ) ( ) ( ) ( )

    Enabling DHCP retries if an IP address is not assigned by the DHCP server
    There may be times where the MFP boots and becomes ready before a DHCP server provides an IP address, i.e. a power outage in a small office. When this occurs, it is necessary to reboot the MFP to cause it to request an IP address.

    To avoid this situation, or similar situations, the following soft-switches may be set.
    1. [Color 4e series] Special firmware ONLY
    a. Software SW No.219 (bit 0) is only implemented on a specific customized ROM


    • DLBT1500514EN00: GW4-J6

    2. [bizhub 4050] On bizhub 4050, Software SW No.285 (bit 6) will be relevant for the same function.
    a. It is also available on the latest ROM indicated below:

    • DLBT1811542EN00: A6F730GEC00-W51

    b. Software SW No.285 (bit 6)0x00:

    • Disable (default)
    • 0x40: Enable

    3. bizhub 8 series and newer
    a. Software SW No.219 (bit 0)

    • 0x00: Disable (default)
    • 0x01: Enable


    Note: When this function is enabled, DHCP Discovery will be executed periodically after AUTO IP is set, and the acquisition of IP addresses from the DCHP server will be executed.Originally Submitted:05/01/2019

  8. #8
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    DHCP failure


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    Re: DHCP failure

    Would be best if switches were on a UPS so they never go down

  9. #9
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    DHCP failure

    copier tech's Avatar
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    Re: DHCP failure

    Quote Originally Posted by emujo2 View Post
    Because the customer told us their switch will only hand out DHCP address. Static IPs are auto blocked. Typical government account..

    Which government is this that it is the norm to have such regular power outages!? I'm guessing you are not in Washington DC.
    Let us eat, drink, and be merry, because tomorrow we may die!

    For all your firmware & service manual needs please visit us at:

    www.copierfirmware.co.uk - www.printerfirmware.co.uk




  10. #10
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    Re: DHCP failure

    Not DC for sure..

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