[Misc] DHCP failure

[emujo2]

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..

[Mr. Breaker]

Re: DHCP failure

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

[emujo2]

Re: DHCP failure

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

[elmaligno]

Re: 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..

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）

[slimslob]

Re: DHCP failure

Read this thread. https://www.copytechnet.com/forums/c...ml#post2581875

[emujo2]

Re: DHCP failure

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

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）

[mascan42]

Re: DHCP failure

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
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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

[rrrohan]

Re: DHCP failure

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

[copier tech]

Re: DHCP failure

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.

[emujo2]

Re: DHCP failure

Not DC for sure..

[emujo2]

Re: DHCP failure

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

Of course it would, but as a vendor trying to keep a presence, and every other device on the network able to negotiate this, and other vendors proving they can deliver equipment that does not need a huge infrastructure upgrade to accommodate this issue my best course of action is to try and see if we can overcome it as well. I'm sitting here at my laptop, the network goes down for 1/2 hour, I am not required to reboot my laptop to reconnect to the network. It should be pretty simple and for some vendors it is.

[KMFLT3CH]

Re: DHCP failure

Soft switch 219 set to a 1 will force the machine to continue trying to get a response.

So are you saying this function is not working correctly on the MFPs even though it's enabled? Here's what I found on it:


MFP repeatedly reacquires an IP address until the MFP obtains an IP addreess from DHCP Server.
Note: This issue can occur when [Auto Setting] is selected for [IP Address Setting Method]. DHCP -> BOOTP -> ARP/PING -> Auto IP.


CAUSE: If the DHCP server goes down and the MFP transfers to Auto IP mode, the MFP is unable to obtain the IP address unless the Main Power is turned OFF/ON even if the DHCP server is recovered.

SOLUTION: Set software switch 219 to HEX 01 by performing the following.
1. Select Counter
2. Select Display Keypad
3. Press Stop 00. Stop 01
4. If applicable input CE password 9272 4 times (Default)
5. Select System 2
6. Select Software Switch Settings
7. Set Switch No. to 219
8. Set HEX Assignment to 01
9. Press Fix
10. Press End
11. Press Exit
12. Power MFP OFF/ON
Notes:
1. Therefore, the function that makes the MFP automatically reacquire the IP address has been added.
2. Setting software switch 219 to HEX 01 increases the range from 60 to 3600 sec. (Default 180 sec.) for the timer on the MFP to resend the "DHCP DISCOVER"
3. When using this function it is recommended to disable BOOTP and ARP/PING when using this function.180 sec (default) is the value when BOOTP and ARP/PING is disabled.
4. The MFP reboots itself in a certain period of time if you switch to ErP Auto Power OFF mode by holding down the Power key.- This function does not work if the MFP is in ErP Auto Power OFF mode in Weekly Timer function.

[slimslob]

Re: DHCP failure

Which government is this that it is the norm to have such regular power outages!? I'm guessing you are not in Washington DC.

It could be any government office in any city where they are subject to roving outages or this time of the year weather related outages.

[copier tech]

Re: DHCP failure

It could be any government office in any city where they are subject to roving outages or this time of the year weather related outages.

I'm sorry but this is not the norm in any major city, weather related or not.

[slimslob]

Re: DHCP failure

I'm sorry but this is not the norm in any major city, weather related or not.

Try living here in California. And we have lots of various government offices.